CLIAMS:1. A transparent floating bathing bar composition with high amount of FFA consisting of
a. A transparent part comprising
a) In-situ soap
b) At least one Surfactants
c) Aqua
d) At least one Solvents
e) Sucrose or its derivatives

And optionally Preservative, Color, Fragrance or Emotive

b. A floating part comprising
a) At least one Surfactants
b) In-situ soap
c) At least one Polymer
d) At least one Free fatty acid
e) At least one Organic structurant
f) At least one salt
g) Aqua
h) At least one Solvent

And optionally Preservative, Color , Fragrance or Emotive

wherein said transparent part and said floating part are present in a ratio ranging from 10:90 to 70:30.

2. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein the preferable working ratio of said transparent part and said floating part is 20:80.

3. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said in-situ Soap is selected from a group comprsing alkali metal salts of fatty acids such as sodium palmitate and sodium oleate, sodium palmate, sodium palm kernelate, sodium cocoate, sodium tallowate, potassium tallowate, sodium lardate and other alkali metal salt of C8-C22 single chained and branched carboxylic acids

4. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said surfactants are selected from a group comprising anionic surfactants, amphoteric surfactants, nonionic surfactants, and any combinations thereof.

5. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said solvent is selected from a group comprising PEG, sorbitol.

6. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said preservatives is chosen from a group comprising BHT, EDTA, and phenoxy ethanol.

7. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said colors are selected from a group comprising C.I. Pigment Black 7 (C.I. 77266), C.I. Pigment Blue 15 (C.I. 74160), C.I. Pigment Blue 15:1 (C.I. 74160), C.I. Pigment Red 4 (C.I. 12085), C.I. Pigment Red 5 (C.I. 12490), C.I. Pigment Red 112 (C.I. 12370), C.I. Pigment Red 181 (C.I. 73360), C.I. Vat Red 1 , C.I. Pigment Green 7 (C.I. 74260), C.I. Pigment Violet 23 (C.I. 51319), C.I. Pigment Yellow 1 (C.I. 11680), C.I. Pigment Yellow 3 and the like.

8. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said fragrance is selected from a group comprising musk oil, civet, castreum, ambergris, plant perfumes such as sandalwood oil, bergamot oil, lemon oil, lavender oil, sage oil, rosemary oil, peppermint oil, eucalyptus oil, menthol, camphor, verbena oil, citroneUa oil, cauout oil, salvia oil, clove oil, chamomile oil, sandalwood oil, costus oil, labdanum oil, broom extract, carrot seed extract, jasmine extract, minmosa extract, narcissus extract, oUbanum extract, rose extract and the like, and chemical substances such as acetophenonene, dimethyUnadane derivatives, naphthaline derivatives, aUyl caprate, α-amylcinnamic aldehyde, anethole, anisaldehyde, benzyl acetate, benzyl alcohol, benzyl propionate, borneol, cinnamyl acetate, cinnamyl alcohol, citral citronneUal, cumin aldehyde, cyclamen aldehyde, decanol, ethyl butyrate, ethyl caprate, ethyl cinnamate, ethyl vanillin, eugenol, geraniol, hexenol, α-hexylcinnamic aldehyde, hydroxycitrolneUal, indole, iso-amyl acetate, iso-amyl iso-valeratek iso-eugenol, nalol, linalyl acetate, p-methylacetophenone, methyl anthranilate, methyl dihydroasmonate, methyl eugenol, methyl-β-naphthol ketone, methylphenhlcarbinyl acetate, musk ketol, musk xylol, 2,5,6-nanodinol, γ-nanolactone, phenylacetoaldehydodimethyl acetate, β-phenylethyl alcohol, 3,3,5-trimethylcyclohexanol, γ- undecalactone, undecenal, vanillin and mixtures thereof.

9. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said emotive is selected from a group comprising Houttuynia cordata extract, Phellodendron bark extract, melilot extract, dead nettle extract, licorice extract, peony root extract, soapwort extract, luffa extract, cinchona extract, strawberry geranium extract, sophora root extract, nuphar extract, fennel extract, primrose extract, rose extract, rehmannia root extract, lemon extract, lithospermum root extract, aloe extract, calamus root extract, eucalyptus extract, field horsetail extract, sage extract, thyme extract, tea extract, seaweed extract, cucumber extract, clove extract, bramble extract, lemon balm extract, carrot extract, horse chestnut extract, peach extract, peach leaf extract, mulberry extract, knapweed extract, hamamelis extract, placenta extract, thymic extract, silk extract, and licorice extract, blue lotus extract, sea mineral extract, blueberry extract, black currant extract and the like.

10. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said polymers are chosen from a group comprising starches such as corn starch, silicone polymers; water soluble polymers such as polyurethanes, polyacrylates, polyalkylene glycol with molecular weight between 200 and 20,000; such as PEG 200, PEG 400, PEG600, PEG 1500, PEG 4000, PEG 6000, PEG 8000 and the like; anionic, zwitterionic, amphoteric and nonionic polymers such as vinylacetate/crotonic acid-copolymers, vinylpyrrolidone/ vinylacrylate-copolymers, vinylacetate/butylmaleate/ isobornylacrylate-copolymers, methylvinylether/maleic acid anhydride-copolymers and their esters, which are not cross-linked and with polyoles linked polyacrylacids which are cross-linked, acrylamidopropyltrimethylammonium chloride/ acrylate-copolymers, octylacrylamide/ methylmethacrylate/tert.butylaminoethylmethacrylate/2-hydroxypropylmethacrylate-copolymers, polyvinylpyrrolidone, vinylpyrrolidone/ vinylacetate-copolymers, vinylpyrrolidone/ dimethylaminoethylmethacrylate/vinyl caprolactam-terpolymers as well as optionally derivatized cellulose ethers and silicones.

11. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said free fatty acids are selected from a group comprising fatty acids with alkyl chain lengths of from C8 – C18 that includes linear chained fatty acids, branched chain fatty acids, saturated and unsaturated fatty acids such as Caprylic, Capric, Lauric, Myristic, Palmitic, Stearic, Oleic and mixtures thereof.

12. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said organic structurant is selected from a group comprising biopolymers such as starch, modified starch, guar gum, tamarind kernel polysaccharide or psyllium husk

13. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said salts are selected from group comprising sodium chloride, sodium sulfate, sodium lactate, sodium glycolate, sodium citrate, potassium chloride, potassium sulfate, magnesium chloride, calcium chloride and combinations thereof.

14. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein amount of said in-situ soap required in said transparent part ranges from 15 to 45% by weight, preferably from 20 to 30% w/w.

15. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein amount of said surfactants required in said transparent part ranges from 2 to 10% by weight, preferably from 3 to 6% by weight.

16. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein amount of said aqua required in said transparent part ranges from 5 to 20% by weight, preferably from 8 to 15% by weight.

17. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein amount of said solvents required in said transparent part ranges from 15 to 40% by weight, preferably from 15 to 25% by weight.

18. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of sucrose required in said transparent part ranges from 0.5 to 5% by weight, preferably from 1 to 2.0% by weight.

19. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of preservatives required in said transparent part ranges from 0.05 to 0.3% by weight, preferably from 0.1 to 0.2% by weight.

20. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of color required in said transparent part ranges from 0.05 to 1.5% by weight, preferably from 0.1 to 0.75% by weight.

21. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of fragrance required in said transparent part ranges from 0.1 to 1.5% by weight, preferably from 0.2 to 0.75% by weight.

22. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of emotive required in said transparent part ranges from 0.05 to 1.5% by weight, preferably from 0.1 to 0.5% by weight.

23. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of surfactants required in said floating part ranges from 5 to 15% by weight, preferably from 5 to 10% by weight.

24. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of in-situ soap required in said floating part ranges from 30 to 65% by weight, preferably from 35 to 50% by weight.

25. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of polymer required in said floating part ranges from 0.05 to 1% by weight, preferably from 0.1 to 0.3% by weight.

26. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of free fatty acid (C16-C18) required in said floating part ranges from 3 to 12% by weight, preferably from 5 to 10% by weight.

27. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of organic structurant required in said floating part ranges from 0.5 to 10% by weight, preferably from 1 to 4% by weight.

28. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of salt required in said floating part ranges from 0.1 to 1% by weight, preferably from 0.3 to 0.5% by weight.

29. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said required amount of aqua required in said floating part ranges from 0.1 to 1.0% by weight, preferably from 0.2 to 0.5% by weight.

30. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of solvents required in said floating part ranges from 10 to 35% by weight, preferably from 15 to 25% by weight.

31. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of preservatives required in said floating part ranges from 0.05 to 0.1% by weight, preferably from 0.02 to 0.05% by weight.

32. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of color required in said floating part ranges from 0.01 to 0.1% by weight, preferably from 0.01 to 0.05% by weight.

33. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of fragrance required in said floating part ranges from 0.005 to 0.1% by weight preferably from 0.05 to 0.1% by weight.

34. The transparent floating bathing bar composition with high amount of FFA as claimed in claim 1, wherein said amount of emotive required in said floating part ranges from 005 to 2.0% by weight, preferably from 0.1 to 0.5% by weight. ,TagSPECI:FIELD OF THE INVENTION
The present invention relates to soap bar, more particularly the present invention relates to transparent floating soap bar with high amount of free fatty acids.

BACKGROUND AND PRIOR ART OF THE INVENTION
Bathing bar with higher amount of free fatty acid (FFA) is widely accepted among the customers, preparation of opaque bathing bar with high amount of FFA is well known state of the art. However it is a challenge to develop a soap bar with high amount of FFA content in both transparent and floating soap. The present invention aims at providing soap with high amount of free fatty acid formulation while maintaining transparent and floating properties.

US 4504433 disclose dried shapes of soap embedded within transparent soap. The dried soap which is embedded inside the transparent soap is colored for improved aesthetic. US ‘433 also provide a process for the preparation of the transparent soap which contains dried shapes of colored soap. The dried shape according to US’433 can be a bird or flower which floats within the transparent soap.

Further US ‘433 also discloses that a soap base is prepared, comprising 5 to 15% by weight of sugar, 25 to 35% by weight of alcoholic compounds, 12 to 25% by weight of an aqueous matter and 58 to 25% by weight of a soap component obtained by saponification of oils and fats or higher fatty acids, etc. The alcoholic compounds may comprise 10% by weight or higher of glycerine, 60% by weight or higher of ethanol and 30% by weight or lower of one or more selected from the group consisting of ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, maltitol, sorbitol and a higher aliphatic alcohol. Suitable amounts of perfumes and coloring agents and, optionally, pearl pigment, are added to, and dispersed in, the soap base heated to 60 degree to 75.degree C and fused, thereby to obtain a colored soap base to be formed into various shapes.

Inserting an embedded material into the soap mass is a cumbersome process from formulation point of view. It is always advantageous to have a full soap formulation as it provide uniform in-use profile till the end.

US 20090253601 relates to a mixture for producing a combi-bar floating in water at 20.degree. C. (and other temperatures), i.e. having a density below 0.99821 g/mL at 20.degree. C. Such combi-bar herein after are also designated as "floating combi-bar". The present invention also relates to a method for producing a floating combi-bar and a combi-bar itself. The composition further comprises of 20-50 wt. %, preferably 25-40 wt. %, of one or more non-soap surfactants, preferably solid non-soap surfactants, vi) 25-60 wt. %, preferably 35-55 wt. %, of one or more free C.sub.14-C.sub.18 fatty acids, vii) 2-40 wt. %, preferably 5-25 wt. %, of one or more metal C.sub.8-C.sub.24 fatty acid soaps, and viii) 0-20 wt. %, preferably 2-20 wt. %, of further ingredients, said mixture containing less than 10 wt. % of water as a further ingredient.

EP1377658 teaches aerated, ultra low-density cast-dehydrated syndet detergent bars for use in personal wash, fabric wash and hard surface cleaning. A process for preparing aerated, ultra low-density cast-dehydrated detergent bars wherein the air is entrained in the bars after rigidification and shaping the product is also provided. The low density soap bar of EP ‘658 is a syndet bar which floats. EP ‘658 teaches entrainment of air in the range 1-90% by volume in order to enable the soap composition to float.

It is desired to have a mild transparent floating soap mass with high amount of FFA in which the entire soap is floating and not the inside soap that is floating. It is always advantageous to have a full floating formulation as it provide uniform in-use profile till the end.

Hence there is a need to make a transparent floating soap bar with high amount of FFA. Making a transparent floating soap bar with high amount of FFA is a challenge since during processing it becomes very difficult for the soap mass to hold air and it loses its transparency. Moreover incorporation of high amount of FFA in floating soap will affect its viscoelastic properties of the soap mass at higher temperature and it reduces the opportunity of entrapment of air which in turn makes the soap mass loose its floating characteristics. It is also difficult to hold free fatty acids in the transparent soap mass as it will lead to the formation of free fatty acids crystals. . It is obvious that there is a need to develop a transparent floating soap which can overcome the problem present in the prior art.

OBJECTS OF THE INVENTION
An object of the present invention is to overcome the drawbacks of the prior art.
Another object of the present invention is to provide a transparent floating soap bar with high amount of FFA
Yet another object of the present invention is to formulate a mild combi bar that maintains the combination throughout use and also retains the desired floating properties.
Yet another object of the present invention is to formulate a mild combi bar with high amount of FFA that maintains its floating and transparent characteristics.
Yet another object of the present invention is to provide a process for the preparation of a transparent floating soap bar with high amount of FFA.

SUMMARY OF INVENTION
According to an aspect of present invention, there is provided a transparent floating bathing bar composition with high amount of FFA consisting of
a. A transparent part comprising
i. In-situ soap
ii. At least one Surfactants
iii. Aqua
iv. At least one Solvents
v. Sucrose or its derivatives

And optionally Preservative, Color, Fragrance or Emotive

b. A floating part comprising
i. At least one Surfactants
ii. In-situ soap
iii. At least one Polymer
iv. At least one Free fatty acid
v. At least one Organic structurant
vi. At least one salt
vii. Aqua
viii. At least one Solvent

And optionally Preservative, Color , Fragrance or Emotive

wherein said transparent part and said floating part are present in a ratio ranging from 10:90 to 70:30.

DETAILED DESCRIPTION OF THE INVENTION
Present invention provides a transparent floating soap bar with high amount of FFA. Transparent floating soap mass upon incorporation of FFA tends to become opaque so the present invention aims at providing a unique formulation approach which can provide a transparent floating soap bar with high amount of FFA. Working ratio of the combination transparent to floating soap is from 10:90 to 70:30 and best working ratio is 20:80.
The term “transparent floating soap with high amount of FFA” refers to soap mass which has transparency in any shape or size and yet maintains its floatability and has high content of FFA.
The term “any shape or size” refers to the various orientation and combinations in which the transparent and floating soap mass can be combined
An embodiment of the present invention provides formulation of floating transparent bathing bar which comprises of:
(i) a first portion that is transparent soap mass;
(ii) a second portion that is floating soap;

where the dual-phase floating transparent bathing bar with high amount of FFA comprises a FFA which ranges from 6-12% w/w and sucrose in the concentration range of 5% w/w.
Free fatty acid blend comprises
a. Saturated higher chain C16 to C18 fatty acids from about 80-85% w/w and
b. Saturated C10 to C14 fatty acids from about 15-20% w/w.
The pH of the soap formulation is below 9.
In the present invention fatty acids (FFA) are present in free form. This fatty acid (FFA) present in the free form lies in the mild opaque soap formulation.

The present invention achieves the transparency of the combi-bar through the unique format of preparing transparent mass by placing the light floating opaque soap at the center or the edge of the transparent mass. This is achieved by following the steps given below

1) Place the lighter weight opaque bar at the center in semi hot condition at 40-500C
2) Pour the transparent mass on top of the above mass in molten stage in the temperature range of 85-900C
3) Cool the mass at 5-100C and de-mold after 25 to 30 minutes or when the complete mass temperature reaches below 300C.

Fatty acid present in the free form lies in the light opaque soap formulation. In order to prevent the migration of FFA from opaque mass to the transparent region during casting the transparent mass is casted on the pre-solidified opaque mass at 35 to 500C.

If the temperature is below 350C the formation of combi-mass is difficult as both the masses will not bind together. If the temperature is above 500C the free fatty acids form the inner mass will migrate to the transparent soap hampering its transparency.

The present invention is achieving the floating properties through the unique ratio of transparent to floating mass and the processing conditions helps in maintaining desired transparency of the transparent mass. Working ratio of the combination transparent to floating soap is from 10:90 to 70:30 and best working ratio is 20:80.

The first portion of transparent soap comprises a transparent layer comprising in-situ soap, Surfactants, Aqua, Solvents, Sucrose and optionally Preservative and Color / Fragrance / Emotive.
In-situ Soap according to the present invention includes alkali metal salts of fatty acids such as sodium palmitate and sodium oleate (i.e. anionic surfactants). Among the soaps that are used herein may be saponified glycerides from plant or animal sources such as sodium palmate, sodium palm kernelate, sodium cocoate, sodium tallowate, potassium tallowate, sodium lardate and other alkali metal salt of C8-C22 single chained and branched carboxylic acids
The amount of in-situ soap required ranges from 15 to 45% by weight, preferably from 20 to 30% w/w.
The surfactants used in the present invention may be selected from a group comprising anionic surfactants, amphoteric surfactants, nonionic surfactants, and any combinations thereof. As it is well known in the art that surfactant materials can also be an emulsifier, the term “surfactant” does not exclude materials which also have emulsification properties.
The anionic surfactants that may be used in the present invention include but are not limited to alkyl sulfates, anionic acyl sarcosinates, anionic alkyl sarcosinates, methyl acyl taurates, N-acyl glutamates, acyl isethionates, alkyl ether sulfates, alkyl sulfosuccinates, alkyl phosphate esters, ethoxylated alkyl phosphate esters, trideceth sulfates, protein condensates, mixtures of ethoxylated alkyl sulfates and the like. Alkyl chains for these surfactants are C8-22, preferably C10-18 and, more preferably, C12-14 alkyls.
The amphoteric surfactants which can be used in the compositions of the present invention are those which can be broadly described as derivatives of aliphatic secondary and tertiary amines in which the aliphatic radical can be straight chain or branched and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic water solubilizing group, e.g., carboxy, sulfonate, sulfate, phosphate, or phosphonate. Examples of compounds falling within this definition are sodium 3-dodecylaminopropionate, sodium 3-dodecylaminopropane sulfonate. Other amphoterics such as betaines are also useful in the present composition. Examples of betaines useful herein include the high alkyl betaines such as coco betaine, coco dimethyl carboxymethyl betaine, lauryl dimethyl carboxy-methyl betaine, lauryl dimethyl alpha-carboxyethyl betaine, cetyl dimethyl carboxymethyl betaine, lauryl bis-(2-hydroxyethyl)carboxy methyl betaine, stearyl bis-(2-hydroxypropyl)carboxymethyl betaine, oleyl dimethyl gamma-carboxypropyl betaine, lauryl bis-(2-hydro-xypropyl)alpha-carboxyet-hyl betaine, etc. The sulfobetaines may be represented by coco dimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, amido betaines, amidosulfobetaines, and the like.
The nonionic surfactants useful in this invention can be broadly defined as compounds produced by the condensation of alkylene oxide groups (hydrophilic in nature) with an organic hydrophobic compound, which may be aliphatic or alkyl aromatic in nature. Non-limiting examples of preferred nonionic surfactants for use herein are those selected form the group consisting of glucose amides, alkyl polyglucosides, sucrose cocoate, sucrose laurate, alkanolamides, ethoxylated alcohols and mixtures thereof. In a preferred embodiment the nonionic surfactant is selected from the group consisting of glyceryl monohydroxystearate, isosteareth-2, trideceth-3, hydroxystearic acid, propylene glycol stearate, PEG-2 stearate, sorbitan monostearate, glyceryl laurate, laureth-2, cocamide monoethanolamine, lauramide monoethanolamine, decyl glucoside and mixtures thereof. The composition of the present invention may also comprise one or more sugar based surfactants selected from but not limited to condensation products of long chain alcohols with sugar or starch polymers (e.g. decyl polyglucoside and lauryl polyglucoside), amides (e.g. cocoamide diethanolamine and cocoamide monoethanolamine), alkylene oxide derived surfactants (e.g. ceteth-6, ceteareth6, steareth-6, PEG-12 stearate, and PEG-200 glyceryl tallowate), Maltooligosyl Glucoside/Hydrogenated Starch Hydrolysate and mixtures thereof. Preferred sugar based surfactants include Maltooligosyl Glucoside/Hydrogenated Starch Hydrolysate and Alkyl polyglucoside.
The amount of surfactants ranges from 2 to 10% by weight, preferably from 3 to 6% by weight.
The required amount of aqua ranges from 5 to 20% by weight, preferably from 8 to 15% by weight.
Solvent that may be used in the present invention include PEG, sorbitol.
The amount of solvents required ranges from 15 to 40% by weight, preferably from 15 to 25% by weight.
The amount of sucrose required ranges from 0.5 to 5% by weight, preferably from 1 to 2.0% by weight.
Preservatives according to the present invention include BHT, EDTA, and phenoxy ethanol.
The required amount of preservatives ranges from 0.05 to 0.3% by weight, preferably from 0.1 to 0.2% by weight.
The colors can be selected from a group comprising C.I. Pigment Black 7 (C.I. 77266), C.I. Pigment Blue 15 (C.I. 74160), C.I. Pigment Blue 15:1 (C.I. 74160), C.I. Pigment Red 4 (C.I. 12085), C.I. Pigment Red 5 (C.I. 12490), C.I. Pigment Red 112 (C.I. 12370), C.I. Pigment Red 181 (C.I. 73360), C.I. Vat Red 1 , C.I. Pigment Green 7 (C.I. 74260), C.I. Pigment Violet 23 (C.I. 51319), C.I. Pigment Yellow 1 (C.I. 11680), C.I. Pigment Yellow 3 and the like.
The required amount of color ranges from 0.05 to 1.5% by weight, preferably from 0.1 to 0.75% by weight.
The fragrance may be selected from a group comprising musk oil, civet, castreum, ambergris, plant perfumes such as sandalwood oil, bergamot oil, lemon oil, lavender oil, sage oil, rosemary oil, peppermint oil, eucalyptus oil, menthol, camphor, verbena oil, citroneUa oil, cauout oil, salvia oil, clove oil, chamomiUe oil, sandalwood oil, costus oil, labdanum oil, broom extract, carrot seed extract, jasmine extract, minmosa extract, narcissus extract, oUbanum extract, rose extract and the like, and chemical substances such as acetophenonene, dimethyUnadane derivatives, naphthaline derivatives, aUyl caprate, α-amylcinnamic aldehyde, anethole, anisaldehyde, benzyl acetate, benzyl alcohol, benzyl propionate, borneol, cinnamyl acetate, cinnamyl alcohol, citral citronneUal, cumin aldehyde, cyclamen aldehyde, decanol, ethyl butyrate, ethyl caprate, ethyl cinnamate, ethyl vanillin, eugenol, geraniol, hexenol, α-hexylcinnamic aldehyde, hydroxycitrolneUal, indole, iso-amyl acetate, iso-amyl iso-valeratek iso-eugenol, nalol, linalyl acetate, p-methylacetophenone, methyl anthranilate, methyl dihydroasmonate, methyl eugenol, methyl-β-naphthol ketone, methylphenhlcarbinyl acetate, musk ketol, musk xylol, 2,5,6-nanodinol, γ-nanolactone, phenylacetoaldehydodimethyl acetate, β-phenylethyl alcohol, 3,3,5-trimethylcyclohexanol, γ- undecalactone, undecenal, vanillin and mixtures thereof.
The required amount of fragrance ranges from 0.1 to 1.5% by weight, preferably from 0.2 to 0.75% by weight.
The emotive may be selected from a group comprising , Houttuynia cordata extract, Phellodendron bark extract, melilot extract, dead nettle extract, licorice extract, peony root extract, soapwort extract, luffa extract, cinchona extract, strawberry geranium extract, sophora root extract, nuphar extract, fennel extract, primrose extract, rose extract, rehmannia root extract, lemon extract, lithospermum root extract, aloe extract, calamus root extract, eucalyptus extract, field horsetail extract, sage extract, thyme extract, tea extract, seaweed extract, cucumber extract, clove extract, bramble extract, lemon balm extract, carrot extract, horse chestnut extract, peach extract, peach leaf extract, mulberry extract, knapweed extract, hamamelis extract, placenta extract, thymic extract, silk extract, and licorice extract, blue lotus extract, sea mineral extract, blueberry extract, black currant extract and the like. .
The amount of emotive in the composition ranges from 0.05 to 1.5% by weight, preferably from 0.1 to 0.5% by weight.
The composition for the second portion floating soap bar which is a dual-phase floating transparent bathing bar with about one to two quarter transparency comprises of Surfactant, In-situ soap, Polymer, Free fatty acid (C16-C18), Organic structurant, Salt, Aqua, Solvents and optionally Preservatives and Color / Fragrance / Emotive.
The surfactants used in the present invention may be selected from a group comprising anionic surfactants, amphoteric surfactants, nonionic surfactants, and any combinations thereof. As it is well known in the art that surfactant materials can also be an emulsifier, the term “surfactant” does not exclude materials which also have emulsification properties.
The anionic surfactants that may be used in the present invention include but are not limited to alkyl sulfates, anionic acyl sarcosinates, anionic alkyl sarcosinates, methyl acyl taurates, N-acyl glutamates, acyl isethionates, alkyl ether sulfates, alkyl sulfosuccinates, alkyl phosphate esters, ethoxylated alkyl phosphate esters, trideceth sulfates, protein condensates, mixtures of ethoxylated alkyl sulfates and the like. Alkyl chains for these surfactants are C8-22, preferably C10-18 and, more preferably, C12-14 alkyls.
The amphoteric surfactants which can be used in the compositions of the present invention are those which can be broadly described as derivatives of aliphatic secondary and tertiary amines in which the aliphatic radical can be straight chain or branched and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic water solubilizing group, e.g., carboxy, sulfonate, sulfate, phosphate, or phosphonate. Examples of compounds falling within this definition are sodium 3-dodecylaminopropionate, sodium 3-dodecylaminopropane sulfonate. Other amphoterics such as betaines are also useful in the present composition. Examples of betaines useful herein include the high alkyl betaines such as coco betaine, coco dimethyl carboxymethyl betaine, lauryl dimethyl carboxy-methyl betaine, lauryl dimethyl alpha-carboxyethyl betaine, cetyl dimethyl carboxymethyl betaine, lauryl bis-(2-hydroxyethyl)carboxy methyl betaine, stearyl bis-(2-hydroxypropyl)carboxymethyl betaine, oleyl dimethyl gamma-carboxypropyl betaine, lauryl bis-(2-hydro-xypropyl)alpha-carboxyet-hyl betaine, etc. The sulfobetaines may be represented by coco dimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, amido betaines, amidosulfobetaines, and the like.
The nonionic surfactants useful in this invention can be broadly defined as compounds produced by the condensation of alkylene oxide groups (hydrophilic in nature) with an organic hydrophobic compound, which may be aliphatic or alkyl aromatic in nature. Non-limiting examples of preferred nonionic surfactants for use herein are those selected form the group consisting of glucose amides, alkyl polyglucosides, sucrose cocoate, sucrose laurate, alkanolamides, ethoxylated alcohols and mixtures thereof. In a preferred embodiment the nonionic surfactant is selected from the group consisting of glyceryl monohydroxystearate, isosteareth-2, trideceth-3, hydroxystearic acid, propylene glycol stearate, PEG-2 stearate, sorbitan monostearate, glyceryl laurate, laureth-2, cocamide monoethanolamine, lauramide monoethanolamine, decyl glucoside and mixtures thereof. The composition of the present invention may also comprise one or more sugar based surfactants selected from but not limited to condensation products of long chain alcohols with sugar or starch polymers (e.g. decyl polyglucoside and lauryl polyglucoside), amides (e.g. cocoamide diethanolamine and cocoamide monoethanolamine), alkylene oxide derived surfactants (e.g. ceteth-6, ceteareth6, steareth-6, PEG-12 stearate, and PEG-200 glyceryl tallowate), Maltooligosyl Glucoside/Hydrogenated Starch Hydrolysate and mixtures thereof. Preferred sugar based surfactants include Maltooligosyl Glucoside/Hydrogenated Starch Hydrolysate and Alkyl polyglucoside.
The amount of surfactants ranges from 5 to 15% by weight, preferably from 5 to 10% by weight.
In-situ Soap according to the present invention includes alkali metal salts of fatty acids such as sodium palmitate and sodium oleate (i.e. anionic surfactants). Among the soaps that are used herein may be saponified glycerides from plant or animal sources such as sodium palmate, sodium palm kernelate, sodium cocoate, sodium tallowate, potassium tallowate, sodium lardate and other alkali metal salt of C8-C22 single chained and branched carboxylic acids
The amount of in-situ soap required ranges from 30 to 65% by weight, preferably from 35 to 50% by weight.
According to the present invention polymers are starches such as corn starch, silicone polymers; water soluble polymers such as polyurethanes, polyacrylates, polyalkylene glycol with molecular weight between 200 and 20,000, preferably between 400 and 10,000 such as PEG 200, PEG 400, PEG600, PEG 1500, PEG 4000, PEG 6000, PEG 8000 and the like; anionic, zwitterionic, amphoteric and nonionic polymers that can be used are, for example, vinylacetate/crotonic acid-copolymers, vinylpyrrolidone/ vinylacrylate-copolymers, vinylacetate/butylmaleate/ isobornylacrylate-copolymers, methylvinylether/maleic acid anhydride-copolymers and their esters, which are not cross-linked and with polyoles linked polyacrylacids which are cross-linked, acrylamidopropyltrimethylammonium chloride/ acrylate-copolymers, octylacrylamide/ methylmethacrylate/tert.butylaminoethylmethacrylate/2-hydroxypropylmethacrylate-copolymers, polyvinylpyrrolidone, vinylpyrrolidone/ vinylacetate-copolymers, vinylpyrrolidone/ dimethylaminoethylmethacrylate/vinyl caprolactam-terpolymers as well as optionally derivatized cellulose ethers and silicones.
The amount of polymer required ranges from 0.05 to 1% by weight, preferably from 0.1 to 0.3% by weight.
The “free fatty acids” as used herein are selected from fatty acids with alkyl chain lengths of from C8 – C18. These may be selected from group of linear chained fatty acids, branched chain fatty acids, saturated and unsaturated fatty acids such as Caprylic, Capric, Lauric, Myristic, Palmitic, Stearic, Oleic, etc and mixtures thereof. The amount of free fatty acid (C16-C18) required ranges from 3 to 12% by weight, preferably from 5 to 10% by weight.
Organic structurant can be selected from the group comprising group comprising biopolymers such as starch, modified starch, guar gum, tamarind kernel polysaccharide or psyllium husk The amount of organic structurant required ranges from 0.5 to 10% by weight, preferably from 1 to 4% by weight.
Salts in accordance with the present invention is selected from group comprising sodium chloride, sodium sulfate, sodium lactate, sodium glycolate, sodium citrate, potassium chloride, potassium sulfate, magnesium chloride, calcium chloride and combinations thereof.. The amount of salt required ranges from 0.1 to 1% by weight, preferably from 0.3 to 0.5% by weight.
The required amount of aqua ranges from 0.1 to 1.0% by weight, preferably from 0.2 to 0.5% by weight.
Solvent that may be used in the present invention include PEG, sorbitol
The amount of solvents required ranges from 10 to 35% by weight, preferably from 15 to 25% by weight.
The preservatives may be selected from BHT, EDTA, and phenoxy ethanol.
The required amount of preservatives ranges from 0.05 to 0.1% by weight, preferably from 0.02 to 0.05% by weight.
The colors can be selected from a group comprising C.I. Pigment Black 7 (C.I. 77266), C.I. Pigment Blue 15 (C.I. 74160), C.I. Pigment Blue 15:1 (C.I. 74160), C.I. Pigment Red 4 (C.I. 12085), C.I. Pigment Red 5 (C.I. 12490), C.I. Pigment Red 112 (C.I. 12370), C.I. Pigment Red 181 (C.I. 73360), C.I. Vat Red 1 , C.I. Pigment Green 7 (C.I. 74260), C.I. Pigment Violet 23 (C.I. 51319), C.I. Pigment Yellow 1 (C.I. 11680), C.I. Pigment Yellow 3 and the like. C.I. stands for color index
The required amount of color ranges from 0.01 to 0.1% by weight, preferably from 0.01 to 0.05% by weight.
The fragrance may be selected from a group comprising musk oil, civet, castreum, ambergris, plant perfumes such as sandalwood oil, bergamot oil, lemon oil, lavender oil, sage oil, rosemary oil, peppermint oil, eucalyptus oil, menthol, camphor, verbena oil, citroneUa oil, cauout oil, salvia oil, clove oil, chamomiUe oil, sandalwood oil, costus oil, labdanum oil, broom extract, carrot seed extract, jasmine extract, minmosa extract, narcissus extract, oUbanum extract, rose extract and the like, and chemical substances such as acetophenonene, dimethyUnadane derivatives, naphthaline derivatives, aUyl caprate, α-amylcinnamic aldehyde, anethole, anisaldehyde, benzyl acetate, benzyl alcohol, benzyl propionate, borneol, cinnamyl acetate, cinnamyl alcohol, citral citronneUal, cumin aldehyde, cyclamen aldehyde, decanol, ethyl butyrate, ethyl caprate, ethyl cinnamate, ethyl vanillin, eugenol, geraniol, hexenol, α-hexylcinnamic aldehyde, hydroxycitrolneUal, indole, iso-amyl acetate, iso-amyl iso-valeratek iso-eugenol, nalol, linalyl acetate, p-methylacetophenone, methyl anthranilate, methyl dihydroasmonate, methyl eugenol, methyl-β-naphthol ketone, methylphenhlcarbinyl acetate, musk ketol, musk xylol, 2,5,6-nanodinol, γ-nanolactone, phenylacetoaldehydodimethyl acetate, β-phenylethyl alcohol, 3,3,5-trimethylcyclohexanol, γ- undecalactone, undecenal, vanillin and mixtures thereof.
The required amount of fragrance ranges from 0.005 to 0.1% by weight preferably from 0.05 to 1% by weight.
The emotive may be selected from a group comprising , Houttuynia cordata extract, Phellodendron bark extract, melilot extract, dead nettle extract, licorice extract, peony root extract, soapwort extract, luffa extract, cinchona extract, strawberry geranium extract, sophora root extract, nuphar extract, fennel extract, primrose extract, rose extract, rehmannia root extract, lemon extract, lithospermum root extract, aloe extract, calamus root extract, eucalyptus extract, field horsetail extract, sage extract, thyme extract, tea extract, seaweed extract, cucumber extract, clove extract, bramble extract, lemon balm extract, carrot extract, horse chestnut extract, peach extract, peach leaf extract, mulberry extract, knapweed extract, hamamelis extract, placenta extract, thymic extract, silk extract, and licorice extract, blue lotus extract, sea mineral extract, blueberry extract, black currant extract and the like. .
The amount of emotive ranges from 005 to 2.0% by weight, preferably from 0.1 to 0.5% by weight.
The inventors have found that the transparent floating soap bar with high amount of FFA has many advantages:
· Transparent and floating mass amlagation provides good binding
· Floating mass has high FFA which gives mildness benefit on skin.
· Floating mass has better structurant which delivers more no of washes.
· Sucrose in transparent mass improves bar hardness and delivers better ‘MUSH’

Another embodiment of the present invention provides a process for the preparation of the transparent floating bathing bar with high amount of FFA.
The process for making the first portion i.e. the transparent soap where the transparent layer is present in the form of a coating layer over the floating mass comprises steps of:
(a) melting the fatty acids in the mixer at a specified temperature. The required temperature ranges from 60-75°C;
(b) adding the solvents and humectants after step (a); The solvents can be chosen from PEG, sorbitol and the humectants can be chosen from glycerol, ethylene glycol, propylene glycol, dimers and trimers of glycerol and mixtures thereof ;
(c) adding preservatives and salts to the product obtained in (b);
(d) neutralizing the product of (c) at a temperature of 75-80°C by the adding alkali. The alkali can be chosen from NaOH or KOH;
(e) adding surfactants with homogenization to the product obtained in (d); and
(f) finally adding required amount of fragrance and color.

The process for making the second portion i.e. floating soap where the Dual-phase floating transparent bathing bar with about one to two quarter transparency comprises steps of:
(a) Melting and mixing fatty acids and solvents at a specific temperature. The temperature ranges from 60-75°C;
(b) Adding surfactants at a specified temperature after step (a) is carried on for a while. Step (a) is carried out for 10-15 mins, preferably for 11 to 12 mins. The specified temperature for which step (b) is carried out ranges from 70-80°C;
(c) Adding alkali and carrying out the step of homogenization after step (b) and maintaining the product at a temperature ranging from 80-90°C;
(d) Adding free fatty acids and organic structurant to the product of (c) and mixing it for 15 mins, preferably for 11 to 12 min;
(e) Adding of additives like BHT, EDTA, and fragrance after mixing the soap and surfactants thoroughly.
The first portion i.e. the transparent soap is then cast into a desired mould and solidified second portion is immediately placed in a desired ratio. The desired ratio is 10:90, preferably 70:30.

The remaining first portion is then poured over second portion such that the second portion is completely covered. The final product is a floating bathing bar with two quarter transparency with high FFA and TFM.

TFM relates to the total fatty matters ( e.g. fatty acids)

The TFM content is in the range of 46 to 52% w/w.

The present invention is now illustrated by way of non limiting examples. Experiments have been conducted to illustrate the transparent floating bathing bar with high amount of FFA.
Example 1: Working example of composition for transparent floating bathing bar with high amount of FFA, (Ratio of combination of part A (transparent) to part B (Floating) is 20:80)
Table 1
Ingredients % by weight
Part-A
In-situ soap 7.4
Surfactants 1.8
Aqua 3.6
Solvents 6.8
Sucrose 0.2
Preservative 0.02
Color / Fragrance / Emotive 0.18
Part-B
Surfactant 8
In-situ soap 37.6
Polymer 0.4
Free fatty acid (C16-C18) 6.4
Organic structurant 4
Salt 0.4
Aqua 4.8
Solvents 17.6
Preservatives 0.08
Color / Fragrance / Emotive 0.72

Example 2: Working example of composition for transparent floating bathing bar with high amount of FFA (Ratio of combination of part A (transparent) to part B (Floating) is 50:50)

Table 2
Ingredients % by weight
Part-A
In-situ soap 18.5
Surfactants 4.5
Aqua 9
Solvents 17
Sucrose 0.5
Preservative 0.05
Color / Fragrance / Emotive 0.45
Part-B
Surfactant 5
In-situ soap 23.5
Polymer 0.02
Free fatty acid(C16-C18) 4
Organic structurant 2.5
Salt 0.25
Aqua 3
Solvents 11
Preservatives 0.5
Color / Fragrance / Emotive 0.45

Example 3: Inadequate coating: Non –working ratio (Ratio of combination of part A (transparent) to part B (Floating) is 5:95)

Table 3
Ingredients % by weight
Part-A
In-situ soap 1.85
Surfactants 0.45
Aqua 0.9
Solvents 1.7
Sucrose 0.05
Preservative 0.005
Color / Fragrance / Emotive 0.045
Part-B
Surfactant 9.5
In-situ soap 44.46
Polymer 0.475
Free fatty acid(C16-C18) 7.6
Organic structurant 4.75
Salt 0.475
Aqua 5.7
Solvents 20.9
Preservatives 0.095
Color / Fragrance / Emotive 0.855

Example 4: Not floating: Non-working (Ratio of combination of part A (transparent) to part B (Floating ) is 80:20)

Table 4
Ingredients % by weight
Part-A
In-situ soap 29.6
Surfactants 7.2
Aqua 14.4
Solvents 27.2
Sucrose 0.8
Preservative 0.08
Color / Fragrance / Emotive 0.72
Part-B
Surfactant 2
In-situ soap 9.4
Polymer 0.1
Free fatty acid(C16-C18) 1.6
Organic structurant 1.0
Salt 0.1
Aqua 1.2
Solvents 4.4
Preservatives 0.02
Color / Fragrance / Emotive 0.18

Example 5: process for the preparation of the transparent floating bathing bar with high amount of FFA
For Making Part-A:

a) Melt the fatty acids in the mixer at 70-75°C.
b) Post melting of the fatty acids add the solvents except water
c) Addition of preservatives and salt
d) Addition of alkali for neutralization at 75-80°C
e) Addition of surfactants with homogenization
f) Addition of sucrose dissolved in water.
g) Addition of fragrance & color

For Making Part-B:

a) Mix all fatty acids and solvents in mixer at 70-75°C.
b) Post melting of fatty acids and mixing for required time (10-15min), add surfactants at 70-75°C.
c) Post surfactant melting, add Alkali followed by homogenization .Maintain the temperature between (85-90°C).
d) Addition of free fatty acids and organic structurant and mixing for 15 min.
e) Once soap & surfactants are mixed completely, add other additives like BHT, EDTA, and fragrance

Now, Take Part A Cast a portion into desired mould and immediately place the solidified Part B in desired ratio. Over the placed Part B cast the remaining Part A so that it coats the Part B evenly to achieve a floating bathing bar with two quarter transparency with high FFA & TFM.

Example 6: Transparent and floating mass amlagation provides good binding
Table 5:
Sample/ prototype During use*
Hot and humid Hot and dry
Example 1 Passed Passed
Example 2 Passed Passed
Example 3 Borderline (Not acceptable) Failed

*During use: all the samples are placed for 10 days in hot and humid (40 0C at 75 RH) and hot and dry condition (40 0C at 30 RH).

Example 7: Floating mass has high FFA which gives mildness benefit on skin

Table 6 illustrates the comparative study showing the milder effects of the soap of the present invention when compared to the conventional bathing bar:
Table 6

S no Transparent to floating ratio Floating property Foam quality pH Mildness
1 10:90 Float Bubbly <9 mild
2 30:70 Float Bubbly <10 mild
3 50:50 Float Small bubbles <10 harsh
4 70:30 Float Creamy >10 Very harsh
5 90:10 Sink Creamy >10 Very harsh

Example 8: Floating mass has better structurant which delivers more no. of washes

Lower ROW (rate of wear) means more no of washes using the same grammage of soap. ROW of the present soap bar is significantly lower that conventional transparent soap.
Table 7
Sample/ prototype “ROW”(rate of wear) (wt%)
Example 1 30-35
Conventional transparent soap >45

Example 9: Sucrose in transparent mass improves bar hardness
Table 8
Sample/ prototype Bar hardness (PV in mm)
Example 1 4-6
Conventional transparent soap 5-7

The less bar hardness value (PV in mm) indicates better hardness of soap. As per table 8 soap of example 1 is having better hardness than conventional transparent soaps.

Example 10: Sucrose in transparent mass delivers better ‘MUSH’
Table 9
Sample/ prototype MUSH ( g/50 cm2)
Example 1 3.5-4.5
Conventional transparent soap >5-6

Mush is the amount of soggy soap deposited on the soap surface after use.