CLIAMS:We claim:

1. A cleansing bar composition comprising:
- a cleansing base composition, in the range of 99-75% by wt;
- colored materials, in the range of 1-25% by wt, uniformly distributed throughout the cleansing bar.

2. A cleansing bar composition as claimed in claim 1, wherein the colored materials are in the form of needles, noodles, beads, speckles or spheres or in a combination thereof.

3. A cleansing bar composition as claimed in claim 2, wherein the ratio of the colored material’s length/diameter ranges from 0.1:1 to 10:1.

4. A cleansing bar composition as claimed in claim 1, wherein said cleansing base composition comprises:
- surfactant, in the range of 1-30% by wt, selected from anionic, cationic, zwitterionic or nonionic class of surfactants or a combination thereof;
- alkaline material, in the range of 0-20% by wt, selected from the class of alkaline and alkaline earth metal hydroxide, carbonate, silicate or a combination thereof.
- water insoluble material, in the range of 40-60% by wt;
- up to 15% of water.
- 0.01-2% by wt. of an antimicrobial agent, enzyme, optical brighter, perfume or sequestrant or a combination thereof.

5. A cleansing bar composition as claimed in claim 1, wherein said colored material comprises:
- surfactant, in the range of 1-30% by wt, selected from anionic, cationic, zwitterionic or nonionic class of surfactants or a combination thereof;
- alkaline material, in the range of 0-20% by wt, selected from the class of alkaline and alkaline earth metal hydroxide, carbonate, silicate or a combination thereof;
- water insoluble material, in the range of 40-60% by wt.
- 0.01-2% of an antimicrobial agent, enzyme, optical brighter or perfume or a combination thereof.
- sparingly water soluble coloring matter or dye, in the range of 0.005 to 5% by wt; and
- up to 7% of water

6. A cleansing bar composition as claimed in preceding claims, wherein the density and chemical composition of the colored material is substantially the same as of cleansing base composition.

7. A process of making a cleansing bar composition as claimed in the preceding claims, the method comprising the steps of:
- processing the cleansing base composition for forming a bar; and
- adding the colored material during the mixing stage of the cleansing base composition when the moisture content of the base composition is at the most 10%.

8. The process as claimed in claim 7 further comprising making the colored material in the form of needles, noodles, beads, speckles or spheres by extrusion, plodding, granulation, casting, spraying or any combination thereof.

9 The process as claimed in claim 8, wherein the ratio of length/diameter of the colored material ranges from 0.1:1 to 10:1.

10. The process as claimed in claim 7, wherein the processing of the cleansing base composition and colored material is carried out in a double stage or single stage plodder/extruder for forming a bar.

11. The process as claimed in claim 7, wherein the processing of the cleaning bar is carried between the temperature range of 15 to 80oC.

12. A cleansing bar prepared in accordance with the preceding claims.

13. A cleansing bar composition substantially as herein described with reference to the foregoing description and examples.

14. A process of preparing the cleansing bar composition substantially as herein described with reference to the foregoing description and examples.

Dated this 26th day of April 2013

of ANAND & ANAND Advocates
Agents for the Applicants ,TagSPECI:“A cleansing bar composition and a process of preparing the same”

FIELD OF THE INVENTION

The present invention relates to a cleansing product which is in the form of a bar. More particularly, the cleansing bar comprises a uniformly distributed color material.

BACKGROUND OF THE INVENTION

In the soap art there are two basic systems for producing colored soap bars. One is called a solid/liquid system and involves the introduction of a colored liquid into soap mass during working or plodding of the soap to get a bar with marbled appearance.

The other solid/solid system involves mixing through a variety of techniques different colored non-liquid soap materials to form the marbleized bar.

There can be difficulties with the use of such systems. For example, in the solid/liquid systems, the striped or marbleized effects can be unsatisfactory because they are smeared or even disappear entirely. Also, the equipment required to inject a liquid dye into the soap mass to produce the marbled effect is often very complicated and therefore expensive to make, use and service.

In the solid/solid system there have been issues of marbleized bars that suffer from defects such as splitting and face cracking due to the inability of the different soap elements of the bar to adequately bond together. Even more importantly, a number of techniques cannot produce a bar having a uniformly distributed colored material with no smearing.

Furthermore, the methods and equipment employed in most solid/solid systems, particularly in the plodding operation, would not be suitable to preserve the integrity of sensitive materials desired to be added to soap bars such as encapsulated dyes, fragrances and the like.

US Patent 4,141,947 teaches a high speed continuous process of making variegated soap, wherein a soap feedstock is mixed with a colouring agent, which is insoluble in the soap mass. The coloring materials forms a pattern of strips arbitrarily arranged throughout the mass.

US patent 4,634,564 teaches Multi-colored detergent bars that are prepared by adding visually distinct liquid to one part of the detergent feedstock before it enters the refiner stage. In this patent, the colored particle is different from the detergent bar composition.

US Patent 3,769,225 describes a process for producing marbleized soap. According to said process a dye is added onto a moving bed of milled soap chips entering the upper barrel of a soap plodder and extruding the admixture of soap chips and soap additive.

UK patent No. 1,528,081 teaches mixing two separate streams of the coloured noodles of specific size to form a marbled bar. UK patent 1,437,322 describes mixing coloured liquid with detergent at aperture disc following the refiner stage of a single barrel assembly.

Indian application no. 834/KOLNP/2011 relates to soaps and extrudable non-soap cleaning articles. It comprises a soap base and one or more colored regions, achieving the appearance of special color variation. The colored particle added to the cleaning mass of first color comprises a water-soluble component, a water-insoluble component, and a dye for imparting a second color to the cleaning article.

Indian application No. 4692/DELNP/2010 relates to a process for incorporating antimicrobial products into soap compositions. In this application, soap pellets with high concentration of antimicrobial active ingredients are made a homogenous paste with the help of using an extrusion press or a kneader. The antibacterial actives are selected from the group of parabens, N-(4-chlorophenyl)-N’-(3,4-dichlorophenyl)urea and triclosan and is incorporated in the concentrate in the range of 5 to 80% by wt.

Hence, the prior art discloses cleansing bars with speckles made of materials which is widely different from the cleansing base composition. When a different matter in the form of colored speckles is to be added to the base cleansing bar, due to difference in the bulk density and material properties, there is always a possibility of uneven mixing or settling of the beads/speckles.

The chemical compatibility of the color material with the bar ingredients has been an issue while using the different materials as speckled or beads.

SUMMARY OF THE INVENTION

Therefore, the objective of the present disclosure is to obviate the above drawbacks.

Further objective of the present invention is to provide a cleansing bar comprising a uniformly distributed color material.

Another objective of the present invention is to provide a cleansing bar composition having uniformly distributed color material that will not smear or bleed.

Yet another objective of the present invention is to provide a process of preparing said cleansing bar composition.

Accordingly, the present disclosures provides a cleansing bar composition, which comprises 99-75% by wt of cleansing base composition and 1-25% by wt of colored materials, uniformly distributed throughout the cleansing bar. The colored material is added in the form of needles, noodles, beads, speckles or spheres, or a combination thereof. The ratio of the colored material’s length/diameter ranges from 0.1:1 to 10:1.

The colored material in the form of needles, noodles, beads, speckles or spheres, or a combination thereof are added directly to the mixer, wherein the other ingredients of the cleansing base composition are being mixed, at a stage when the moisture content of the base mixture is at the most 10%.

This process eliminates the need of the extra arrangements/equipments and any special mixing process. The present composition and process eliminates the probability of bleedings, controlled by encapsulating the dye materials.

 
DETAILED DESCRIPTION

The embodiments of the present disclosure will now be described in detail with reference to the examples. However, the present disclosure is not limited to the embodiments. The present disclosure can be modified in various forms. Thus, the embodiments of the present disclosure are only provided to explain more clearly the present disclosure to the ordinarily skilled in the art of the present disclosure.

According to an embodiment of the present disclosure a cleansing bar composition comprises 99-75 % by wt of a cleansing base composition and 1-25% by wt of colored materials in the form of needles, noodles, beads, speckles or spheres, uniformly distributed throughout the cleansing bar. The ratio of the colored material’s length/diameter ranges from 0.1:1 to 10:1.

The colored material is added directly to the mixer, wherein the other ingredients of the cleansing base composition are being mixed, at a stage when the moisture content of the base mixture is at the most 10%. Further, the processing of the cleaning bar is carried between the temperature range of 15 to 80oC.

Table 1 shows embodiment of the end product composition and moisture content at mixing stage.

INGREDIENTS End product
Ex-E1 Ex-E2 Moisture content when mixed Density
gm/cc
% % %
Cleansing Base composition 85 90 9 1.77
Colored material 15 10 6.5 1.80
Total 100 100

Table 1

The colored material in the form of needles, noodles, beads, speckles or spheres are processed by extrusion, plodding, granulation, casting, spraying or any combination thereof.

The processing of the cleansing base composition and colored material may be carried out in a double stage or single stage plodder/extruder for forming a bar.

According to another aspect of the present embodiment, the cleansing base composition comprises:
- surfactant, in the range of 1-30% by wt, selected from anionic, cationic, zwitterionic or nonionic class of surfactants or a combination thereof;
- alkaline material, in the range of 0-20% by wt, selected from the class of alkaline and alkaline earth metal hydroxide, carbonate, silicate or a combination thereof.
- water insoluble material, in the range of 40-60% by wt;
- up to 15% of water.
- 0.01-2% by wt of an antimicrobial agent, enzyme, optical brighter, perfume or sequestrant or a combination thereof.

The colored material comprises:
- surfactant, in the range of 1-30% by wt, selected from anionic, cationic, zwitterionic or nonionic class of surfactants or a combination thereof;
- alkaline material, in the range of 0-20% by wt, selected from the class of alkaline and alkaline earth metal hydroxide, carbonate, silicate or a combination thereof;
- water insoluble material, in the range of 40-60% by wt.
- 0.01-2% of an antimicrobial agent, enzyme, optical brighter or perfume or a combination thereof.
- sparingly water soluble coloring matter or dye, in the range of 0.005 to 5% by wt; and
- up to 7% of water

In the present disclosure, the composition of colored material is made in such a way that their density and chemical composition is substantially same as of cleansing base composition. This results in eliminating the chances of uneven mixing of base composition and colored material due to difference in material properties.

Table 2 shows examples of cleansing base composition and composition of colored material in the form of needles, noodles, beads, speckles or spheres or in a combination thereof.

Cleansing base composition Colored material
Ex-B Ex-1 Ex-2 Ex-3
INGREDIENTS % % % %
anionic surfactant 14.0 12.0 15.0 0
Non ionic surfactant 0.0 3.0 0.0 3
Alkaline agent 17.0 18.0 18.0 18
water insoluble material 52.0 57.0 57.0 57
Sequestrants 1.0 1.0 1.0 1
Perfume 0.1 0.1 0.1 .1
Electrolyte 6.0 2.8 2.8 2.8
Cationic surfactants 0 0 0 13
Moisture 9.9 6.0 6.0 6
Coloring matter /dye 0.0 0.025 0.025 0.25
Total 100 100 100 100
Size NA 1mmX5mm 1mmx5mm 1mmX5mm
Shape NA cylindrical cylindrical cylindrical

Table 2

The disclosure further describes non-limiting specific examples of cleansing base composition and composition for colored material.

Composition employing Anioinic surfactant:

Ingredients %
SODA ASH(kg) 7.35
Feldspar(kg) 9.19
Linear alkyl benzene sulphonate (89%)- anionic 13.79
A.O.S. (38%)-anionic 3.36
DOLOSEL 1.65
CHINA CLAY 27.53
MgSO4.7H2O 2.76
DOLOMITE 18.38
TiO2 0.39
S.T.P.P. 5.52
SODIUM SILICATE 8.27
H.L.-20 1.65
PERFUME 0.11
Dye 0.025
TOTAL 100.00

Composition employing Non ionic surfactant:

INGREDIENTS %
APG-PLANTA CARE- NONIONIC 7.76
SODA ASH 4.31
FELDSPAR 18.33
CHINA CLAY 29
STPP 4.36
HL20 1.45
DOLOMITE 22.64
MgSO4 2.42
TIO2 0.37
DOLOSEL 1.42
SODIUM SILICATE 7.76
Dye 0.025
perfume 0.1
Total 100

 
Composition employing zwitterionic surfactant:

INGREDIENTS %
COCO BETAIN-ZWETTER IONIC 8
SODA ASH 5
FELDSPAR 18.33
CHINA CLAY 29.11
STPP 4.36
HL20 1.45
DOLOMITE 22.64
MgSO4 2.42
TIO2 0.37
DOLOSEL 1.42
SODIUM SILICATE 7.5
Dye 0.025
Perfume 0.1
Total 100

The present composition is useful in encapsulating substance like enzymes, perfumes, antibacterial molecules into the bar without worrying about the uneven distribution and without using any special processing arrangements. The present invention is economical and safe in application. It also enhances the aesthetical value of the cleansing bar. During use, the speckles are more prominent, giving a better appearance, without bleeding.

Figure 1 accompanying the present disclosure illustrates the cleansing bar with uniform distribution of colored material, which can be in the form of needles, noodles, beads, speckles or spheres.

The present disclosure also eliminates the major smearing issue of the beads since the shear distribution is same for both i.e. the cleansing base composition and the color materials.

The process and the composition can be used to make dish wash bar, bathing soap, hard surface cleaner and fabric wash bar.

While the disclosure is described in conjunction with the illustrated embodiment, it will be understood that it is not intended to limit the disclosure to such embodiment. On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the disclosure as defined by the appended claims.

In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled. Accordingly, the claims are not limited by the disclosure.