CLIAMS:1. A transparent floating bathing bar comprising:
a) A first portion of transparent soap wherein the transparent floating bathing bar comprises one to two quarter transparency; and
b) A second portion of low density floating soap
wherein the ratio of first portion and second portion ranges from 60: 40 to 40: 60 such that the soap mass retains its floatability and even surface finish characteristics.
2. The transparent floating bathing bar as claimed in claim 1, wherein the floating mass has to be placed and maintained at a temperature ranging from 40-60 0C while mixing the two parts.

3. The transparent floating bathing bar as claimed in claim 1, wherein the first portion comprises of In-situ soap, surfactants, aqua, solvents, glycerin, preservative, color, fragrance and emotive.

4. The transparent floating bathing bar as claimed in claim 1, wherein the second portion comprises of surfactant, in-situ soap, polymer, salt soap, aqua, solvents, preservatives, color, fragrance and emotive.

5. The transparent floating bathing bar as claimed in claim 3 and 4, wherein said in-situ soap is selected from a group comprising 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.

6. The transparent floating bathing bar as claimed in claim 3 and 4, wherein said surfactants are selected from a group comprising anionic surfactants, amphoteric surfactants, nonionic surfactants, and any combinations thereof.

7. The transparent floating bathing bar as claimed in claim 3 and 4, wherein said solvent is selected from PEG, sorbitol.

8. The transparent floating bathing bar as claimed in claim 3 and 4, wherein said preservatives are selected from BHT, EDTA, and phenoxy ethanol.

9. The transparent floating bathing bar as claimed in claim 3 and 4, 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, 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.
10. The transparent floating bathing bar as claimed in claim 3 and 4, wherein said colours 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.
11. The transparent floating bathing bar as claimed in claim 3 and 4, 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.
12. The transparent floating bathing bar as claimed in claim 4, wherein said polymers are selected from a group comprising 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.
13. The transparent floating bathing bar as claimed in claim 4, wherein said salts 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.
14. The transparent floating bathing bar as claimed in claim 3, wherein amount of said in-situ soap ranges from 30 to 45% by wt., preferably from 15 to 22.5% by wt.

15. The transparent floating bathing bar as claimed in claim 3, wherein amount of said surfactants ranges from 5 to 25% by wt, preferably from 7.5 to 11% by wt.

16. The transparent floating bathing bar as claimed in claim 3, wherein amount of said aqua ranges from 5 to 20% by wt., preferably from 7.5 to 10.5% by wt.

17. The transparent floating bathing bar as claimed in claim 3, wherein amount of said solvents required ranges from 15 to 30% by wt., preferably from 17.5 to 24% by wt.

18. The transparent floating bathing bar as claimed in claim 3, wherein amount of said glycerin required ranges from 0.5 to 5% by wt., preferably from 0.5 to 2.5% by wt.

19. The transparent floating bathing bar as claimed in claim 3, wherein amount of said preservatives ranges from 0.0005 to 0.5% by wt., preferably from 0.01 to 0.1% by wt.

20. The transparent floating bathing bar as claimed in claim 3, wherein amount of said color ranges from 0.01 to 0.15% by wt., preferably from 0.05 to 0.08% by wt.

21. The transparent floating bathing bar as claimed in claim 3, wherein amount of said fragrance ranges from 0.5 to 1.5% by wt., preferably from 0.8 to 1.2 % by wt.

22. The transparent floating bathing bar as claimed in claim 3, wherein amount of said emotive ranges from 0.05 to 0.2% by wt., preferably from 0.05 to 0.1% by wt.

23. The transparent floating bathing bar as claimed in claim 4, wherein amount of said surfactants ranges from 5 to 15% by wt., preferably from 5 to 8% by wt.

24. The transparent floating bathing bar as claimed in claim 4, wherein amount of said in-situ soap required ranges from 20 to 65% by wt., preferably from 20 to 30% by wt.

25. The transparent floating bathing bar as claimed in claim 4, wherein amount of said polymer required ranges from 0.05 to 1% by wt., preferably from 0.05 to 0.4% by wt.

26. The transparent floating bathing bar as claimed in claim 4, wherein amount of said salt soap required ranges from 0.1 to 0.9% by wt., preferably from 0.3 to 0.7% by wt.

27. The transparent floating bathing bar as claimed in claim 4, wherein amount of said aqua ranges from 0.1 to 1% by wt., preferably from 0.1 to 0.4% by wt.

28. The transparent floating bathing bar as claimed in claim 4, wherein amount of said solvent required ranges from 10 to 35% by wt., preferably from 12.5 to 18% by wt.

29. The transparent floating bathing bar as claimed in claim 4, wherein amount of said preservatives can be present in amounts 0.01 to 0.1 % by weight.

30. The transparent floating bathing bar as claimed in claim 4, wherein amount of said color ranges from 0.05 to 2% by wt., preferably from 0.05 to 0.8% by wt.

31. The transparent floating bathing bar as claimed in claim 4, wherein amount of said fragrance ranges from 0.01 to 0.15% by wt., preferably from 0.05 to 0.08% by wt.

32. The transparent floating bathing bar as claimed in claim 4, wherein amount of said emotive ranges from 0.05 to 2% by wt, preferably from 0.05 to 0.8% by wt.

33. A method of making transparent floating bathing bar wherein, the process step for preparation of first portion comprises steps of:
a) melting the fatty acids in the mixer at a temperature that ranges from 60-75°C;
b) adding the solvents and humectants after step (a)
c) adding preservatives and salts to the product obtained in step (b);
d) neutralizing the product of step (c) at a temperature of 75-80°C by the adding alkali.
e) adding surfactants with homogenization to the product obtained in step (d); and
f) finally adding required amount of fragrance and color.

wherein, the process step for the preparation of the second portion comprises steps of:
a) melting and mixing fatty acids and solvents at a specific temperature preferably from 65 to 70oC.
b) adding surfactants at a specified temperature after step (a) is carried on for a while. Step (a) is carried out preferably for 11 to 12 mins. The specified temperature for which step (b) is carried out preferably ranges from 70 to 75oC.
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, preferably from 80 to 85oC.
d) adding of additives like BHT, EDTA, and fragrance after mixing the soap and surfactants thoroughly.
34. The method of making transparent floating bathing bar as claimed in claim 5,wherein the first portion and second portion are casted into a desired mould in the ratio of 60:40.
35. The method of making transparent floating bathing bar as claimed in claim 5,wherein the floating mass has to be placed and maintained at a temperature ranging from 40-60 0C.
36. The method of making transparent floating bathing bar as claimed in claim 5,wherein the first portion comprises of In-situ soap, surfactants, aqua, solvents, glycerin, preservative, color, fragrance and emotive.
37. The method of making transparent floating bathing bar as claimed in claim 5,wherein the second portion comprises of surfactant, in-situ soap, polymer, salt soap, aqua, solvents, preservatives, color, fragrance and emotive. ,TagSPECI:FIELD OF THE INVENTION
The present invention relates to soap bar, more particularly the present invention relates to a transparent floating bathing bar and process for preparing the same.
BACKGROUND & PRIOR ART OF THE INVENTION
Floating soap and transparent soap bar is well known state of the art; however development of transparent floating soap bar is difficult as during processing it becomes very difficult for the transparent soap mass to hold air. The transparent mass so processed also looses its transparency.
GB 819701 discloses a transparent soap bar with an embedded material which has lower specific weight. Further it teaches that a soap tablet renders buoyancy by embedding in the cake of soap a core of material possessing an adequately lower specific weight than water e.g. wood, cork or hollow bodies. GB '701 teaches that the buoyancy of soap is improved by disposing a floatable mass at the centre. The soap bar of GB '701 further states that the soap material which covers the low density material is preferably transparent.

Inserting an embedded material into the soap mass is a cumbersome process from formulation point of view. Also it is advantageous to have a full soap formulation as it provide better and similar in –use throughout the use.

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

US 6720296 discloses a soap assembly comprising a transparent soap, an embedded toy or the like. The soap assembly further comprises of a transparent soap with an embedded image layer.

Formulating dried shapes of soap embedded within transparent soap is also a cumbersome process from formulation point of view. The formulation approach explained above is good from aesthetic point of view but does not address the current situation of formulating a transparent floating soap mass.

Generally the surface finish of floating soap is not good in comparison with transparent soap mass. Hence, it is desired to formulate a transparent floating soap mass with good surface finish while retaining its floating properties.

Further there was a need to develop a transparent floating bathing bar with greater surface finish since it has been found that in case of floating soap; good surface finish is not achieved due to involvement of large quantity of air into the soap mass during processing.
OBJECTIVE 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 bathing bar with a superior surface finish.
Yet another object of the present invention is to provide a combi-bar of both transparent and floating soap.
Yet another object of the present invention is to provide a transparent floating bathing bar with better sensory and lather quality.
Yet another object of the present invention is to provide a transparent floating bathing bar with about one to two quarter transparency.
Yet another object of the present invention is to provide a process for the preparation of the transparent floating bathing bar.
SUMMARY OF THE PRESENT INVENTION
An aspect of thepresent invention is to provides a transparent floating bathing bar comprising:
a. A first portion of transparent soap wherein the transparent floating bathing bar comprises one to two quarter transparency; and
b. A second portion of low density floating soap
Wherein the ratio of first portion and second portion ranges from 60: 40 to 40: 60 such that the soap mass retains its floatability and even surface finish characteristics.

Another aspect of the present invention is to provide a method of making transparent floating bathing bar wherein, the process step for preparation of first portion comprises steps of:
a. melting the fatty acids in the mixer at a temperature that ranges from 60-75°C;
b. adding the solvents and humectants after step (a)
c. adding preservatives and salts to the product obtained in step (b);
d. neutralizing the product of step (c) at a temperature of 75-80°C by the adding alkali.
e. adding surfactants with homogenization to the product obtained in step (d); and
f. finally adding required amount of fragrance and color.

wherein, the process step for the preparation of the second portion comprises steps of:
a. melting and mixing fatty acids and solvents at a specific temperature preferably from 65 to 70oC.
b. adding surfactants at a specified temperature after step (a) is carried on for a while. Step (a) is carried out preferably for 11 to 12 mins. The specified temperature for which step (b) is carried out preferably ranges from 70 to 75oC.
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, preferably from 80 to 85oC.
d. adding of additives like BHT, EDTA, and fragrance after mixing the soap and surfactants thoroughly.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Figure1: Figure 1 shows the floating transparent soap bar with two quarter transparency.

Figure 2: Figure 2 shows the comparison of surface finish of transparent floating soap and normal floating soap.
DETAILED DESCRIPTION OF THE INVENTION
The present invention aims at formulating a transparent floating soap mass. Transparent soap mass has its characteristics very much different from that of a floating soap mass. Transparent soap cannot be processed as such to hold air as it can lead to loss of transparency. So in order to formulate a transparent floating soap mass both the transparent and floating mass are combined in a suitable ratio so that the transparency and floatability of the comb-mass is maintained.
The term “transparent floating soap” refers to soap mass which has one to two quarter transparency in any shape or size and yet maintains its floatability.

The term “one to two quarter transparency” refers to the portion of the transparent floating mass which is transparent.

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 a transparent floating bathing bar which comprises of:
(i) a first portion of transparent soap wherein the transparent floating bathing bar comprises one to two quarter transparency; and
(ii) a second portion of low density floating soap
wherein the ratio of first portion to second portion is from 60: 40 to 40: 60 so that the soap mass retains its floatability and even surface finish characteristics.

The transparent and floating soap mass is very difficult to combine as the properties and characteristics of both the soap are very different from each other. Floating soap mass is aerated and are stable at specific temperature while the transparent mass maintains its transparency due to certain formulation aspects. Combination of both these incompatible mass needs a suitable processing condition.
During the combination of both the mass the floating mass has to be placed and maintained at a temperature of 40-60 0C. The hot melt transparent soap is directly transferred to the floating mass

The temperature of floating soap is very critical; it has to be maintained between 40 to 60 0C. If the temperature is below 40 0C then the effective binding between the soaps will not happen and if the temperature is above 600C then the transparent mass will loose its transparency due to diffusability of the two different masses across the matrix.

The transparent floating bathing bar of the present invention is having superior and advantageous properties such as:
· It has better sensory and lather quality
· It has superior surface finish
· About one to two quarter transparency which provide better aesthetic values.

The composition for the first portion transparent soap comprises of In-situ soap, Surfactants, Aqua, Solvents, glycerin, 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 wt., preferably from 15 to 22.5% by wt.
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-carboxyethyl 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 25% by wt, preferably from 7.5 to 11% by wt.
The required amount of aqua ranges from 5 to 20% by wt., preferably from 7.5 to 10.5% by wt.
Solvent that are used in the present invention include PEG, sorbitol
The amount of solvents required ranges from 15 to 30% by wt., preferably from 17.5 to 24% by wt.
The amount of glycerin required ranges from 0.5 to 5% by wt., preferably from 0.5 to 2.5% by wt.
Preservatives according to the present invention include BHT, EDTA, and phenoxy ethanol. The required amount of preservatives ranges from 0.0005 to 0.5% by wt., preferably from 0.01 to 0.1% by wt.
The colours 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 0.01 to 0.15% by wt., preferably from 0.05 to 0.08% by wt.
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 0.5 to 1.5% by wt., preferably from 0.8 to 1.2 % by wt.
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 required amount of emotive ranges from 0.05 to 0.2% by wt., preferably from 0.05 to 0.1% by wt.
The composition for the second portion floating bathing bar wherein, wherein the transparent floating bathing bar comprises one to two quarter transparency comprises of Surfactant, in-situ soap, polymer, Salt, Aqua, solvents, 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 betaincfe, 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 wt., preferably from 5 to 8% by wt.
In-situ soaps can be selected from the group as described above 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 20 to 65% by wt., preferably from 20 to 30% by wt.
According to the present invention polymers are 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 0.051 to 1% by wt., preferably from 0.05 to 0.4% by wt.
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 soap required ranges from 0.1 to 0.9% by wt., preferably from 0.3 to 0.7% by wt.
The required amount of aqua ranges from 0.1 to 1% by wt., preferably from 0.1 to 0.4% by wt.
Solvent that are used in the present invention include PEG, sorbitol.
The amount of solvent required ranges from 10 to 35% by wt., preferably from 12.5 to 18% by wt.
Preservatives according to the present invention include BHT, EDTA, phenoxy ethanol. Preservatives can be present in amounts 0.01 to 0.1 % by weight in the final product.
The required amount of preservatives ranges from 0.005 to 0.1% by wt., preferably from 0.005 to 0.04% by wt.
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 2% by wt., preferably from 0.05 to 0.8% by wt.
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 0.01 to 0.15% by wt., preferably from 0.05 to 0.08% by wt.
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 required amount of emotive ranges from 0.05 to 2% by wt, preferably from 0.05 to 0.8% by wt.
Another embodiment of the present invention provides a process for the preparation of the transparent floating bathing bar.
The process for making the first portion i.e. the transparent soap 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 transparent floating 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, preferably from 65 to 70oC.
(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, preferably from 70 to 75oC.
(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, preferably from 80 to 85oC.
(d) 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 60:40

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.

It was found that the present invention has 100% bathing bar composition either from transparent mass or from opaque mass. The present transparent floating bathing bar has been achieved using suitable process condition. During the combination of both the mass the floating mass was placed inside and maintained at a temperature of 40-60 0C. The hot melt transparent soap which is directly transferred to the floating mass. The temperature of floating soap is very critical it has to be maintained between 40 – 600C.

If the temperature is below 40oC then the binding effect between the soaps will not happen and if the temperature is above 60oC then the transparent mass will lose its transparency.

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

Table 1

Ingredients % wt.
Part-A
Fatty acid 18.6
Sodium hydroxide (48% solution) 3.6
Surfactants 5.4
Aqua 10.2
Solvents 21
Glycerin 0.6
Preservative 0.06
Color / Fragrance / Emotive/Humectant 0.54
Part-B
Surfactant 5.6
Fatty acid 19.4
Sodium hydroxide (48% solution) 3.8
Polymer 0.4
Salt 0.2
Aqua 0.4
Solvents 9.76
Preservatives 0.05
Color / Fragrance / Emotive / Humectant 0.1

Example 2: Working example of composition for transparent floating bathing bar

Table 2

Ingredients % wt.
Part-A
Fatty acid 15.5
Sodium hydroxide (48% solution) 3
Surfactants 4.5
Aqua 8.5
Solvents 17.5
Glycerin 0.5
Preservative 0.05
Color / Fragrance / Emotive / Humectant 0.45
Part-B
Surfactant 7.0
Fatty acid 20.1
Sodium hydroxide (48% solution) 3.9
Polymer 0.5
Salt 0.25
Aqua 0.5
Solvents 12.2
Preservatives 0.05
Color / Fragrance / Emotive / Humectant 0.1

Example 3:

Non –working ratio

Table 3

Ingredients % wt.
Part-A
Fatty acid 12.5
Sodium hydroxide (48% solution) 2.3
Surfactants 3.6
Aqua 7.6
Solvents 14
Glycerin 0.4
Preservative 0.04
Color / Fragrance / Emotive / Humectant 0.36
Part-B
Surfactant 8.4
Fatty acid 29.2
Sodium hydroxide (48% solution) 5.6
Polymer 0.6
Salt 0.3
Aqua 0.6
Solvents 14.46
Preservatives 0.06
Color / Fragrance / Emotive / Humectant 0.6

Observation-Not adequate surface coverage: poor surface finish

Example 4: Non-working

Table 4

Ingredients % wt.
Part-A
Fatty acid 24.8
Sodium hydroxide (48% solution) 4.8
Surfactants 7.2
Aqua 15.2
Solvents 28
Glycerin 0.8
Preservative 0.08
Color / Fragrance / Emotive / Humectant 0.72
Part-B
Surfactant 2.8
Fatty acid 11.3
Sodium hydroxide (48% solution) 0.3
Polymer 0.2
Salt 0.1
Aqua 0.2
Solvents 4.88
Preservatives 0.02
Color / Fragrance / Emotive / Humectant 0.01

Observation-Not floating

Example 5: Process for the preparation of the transparent floating bathing bar
For Making Part-A:

a) Melt the fatty acids in the mixer at 60-75°C.
b) Post melting of the fatty acids add the solvents and humectants
c) Addition of preservatives and salt
d) Addition of alkali for neutralization at 80-90°C
e) Addition of surfactants with homogenization
f) 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 (80-90°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: Illustrateive expmple to demonstrate the working ratio.

Table 5

Sl.no Transparent: Floating Floating Property Foam Quality (Visual) Surface Finish Lather volume(ml) In use sensory rating **
1 100:0 Sink Creamy Smooth 510 3
2 80:20 Sink Creamy Smooth 490 3
3 60:40 Float Creamy Smooth 480 5
5 50:50 Float Small bubble Smooth 470 4
6 40:60 Float Bubbly Uneven 460 3
7 0:100 Float Bubbly Uneven 450 3

** Sensory rating is based on a 10 panel sensory study & the rating scale is 1-5

Observation: Hence it was observed that the best possible ratio of combining the transparent and floating soap bar is 60:40. The surface finish obtained was smooth and the foam quality was also small bubbles.