Transparent extruded toilet soap

Patent metadata

Field	Value
Publication number	US-9695387-B2
Application number	US-201515308377-A
Country	US
Kind code	B2
Filing date	Apr 30, 2015
Priority date	May 8, 2014
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

The present invention relates to extruded soap bars having improved transparency. Specifically, by balancing the amounts of C 16 (palmitic acid) and C 18 (stearic acid) fatty acids to have a ratio in the final bar of 1, substantially improved transparency is unexpectedly obtained.

First claim

The invention claimed is:

1. A transparent, extruded soap bar composition comprising:
a) from 55 to 80% by weight of soap bar composition of a fatty acid blend, wherein said fatty acid blend, comprises from 25% to 45% of said blend of saturated C 16 (palmitic acid) and saturated C 18 (stearic acid) fatty acids, their salts or their mixtures thereof, and wherein said fatty acid blend is a fatty acid blend derived from vegetal oil source and fewer than 3% of total fatty acids in the bar final composition is derived from animal source;
b) polyols in an amount ranging from 3 to 25% by weight of the soap bar composition;
c) co-adjuvants selected from the group of polymers, organic and inorganic adjuvants, electrolytes, benefit agents and other minor ingredients in an amount ranging from 0.1 to 40% by weight of the soap composition; and
d) the remainder of water;

wherein the ratio by weight of the saturated C 16 (palmitic acid) to saturated C 18 (stearic acid) in the blend (and in final bar) is 0.7 to 1.4; and wherein transparency is defined by having a transmittance of at least 15% as measured by the transparency test described herein.

2. A transparent soap bar composition according to claim 1 wherein the soap bar composition comprises a ratio by weight of the fatty acids C 16 (palmitic acid) to C 18 (stearic acid) in the blend (and in final bar) is in the range from 0.8 to 1.2.

3. A transparent soap bar composition according to claim 2 wherein the soap bar composition comprises a ratio by weight of the fatty acids C 16 (palmitic acid) to C 18 (stearic acid) in the blend (and in bar) of about 1.

4. A transparent soap bar composition according to claim 1 wherein the polyol is selected from the group consisting of short chain polyhydroxy compounds, sugars, polymeric synthetic polyols; and alkanolamine.

5. A transparent soap bar composition according to claim 1 wherein the polyol ranges from 5% to 20% by weight of said soap composition.

6. A transparent soap bar composition according to claim 1 wherein said polyol comprises 3% to 10% by weight of sucrose, based on the weight of the soap bar composition.

7. A transparent soap bar composition according to claim 1 wherein the fatty acid blend comprises from 60% to 80% by weight of said soap composition, more preferably, the fatty acid blend comprises a fatty acid blend in an amount of 60 to 78% by wt. of the soap bar.

8. A transparent soap bar composition according to claim 1 , comprising from 0.1 to 5% by weight of fatty acids in fatty acid blend which are in free fatty acid form.

9. A transparent soap bar composition according to claim 1 wherein the soap bar composition further comprises 0.2 to 10% of 12-hydroxy oleic acid.

10. A transparent soap bar composition according to claim 1 wherein fatty acid blend comprises 3 to 10% by weight of trans acids soaps, preferably elaidic acid.

11. A transparent bar composition according to claim 1 wherein the extruded soap bar composition has a transmittance of at least 16%, preferably of at least 20%, more preferably of at least 32%, according to the transparency test.

12. A bar according to claim 1 which is an extruded bar and wherein said bar can be extruded at a rate in excess of 9 kilograms per minute.

13. A transparent extruded soap bar composition according to claim 1 , comprising:
a) from 55% to 80% by weight of soap bar composition fatty acid blend, wherein said fatty acid blend comprises from 25% to 45% of said blend of saturated C 16 (palmitic acid) and saturated C 18 (stearic acid) fatty acids, their salts or their mixtures thereof wherein said fatty acid blend is a fatty acid blend derived from vegetal source and substantially no fatty acids are derived from animal source;
b) polyols in an amount ranging from 3 to 25% by weight of the soap bar composition;
c) co-adjuvants selected from the group of polymers, organic and inorganic adjuvants, electrolytes, benefit agents and other minor ingredients in an amount ranging from 0.1 to 40% by weight of the soap composition;
d) the remainder of water;

wherein the ratio by weight of saturated C 16 (palmitic acid) to saturated C 18 (stearic acid) is 0.7 to 1.4, wherein said transparency is defined by having a transmittance of at least 16%.

14. A transparent soap bar composition according to claim 1 comprising:
a) from 55% to 80% by weight of soap bar composition fatty acid blend, wherein fatty acid blend comprises from 25% to 45% of said blend of saturated C 16 (palmitic acid) and saturated C 18 (stearic acid) fatty acids, their salts or their mixtures thereof;
b) polyols other than sucrose in an amount ranging from 0 to 10% by weight of the soap bar composition;
c) co-adjuvants selected from the group of polymers, organic and inorganic adjuvants, electrolytes, benefit agents and other minor ingredients in an amount ranging from 0.1 to 40% by weight of the soap composition;
d) 3% to 10% by weight of sucrose;
e) 0.2 to 10% of 12-hydroxy oleic acid;
f) the remainder of water;

wherein the ratio by weight of the saturated C 16 (palmitic acid) to saturated C 18 (stearic acid) is about 1, where said transparency is defined by having a transmittance of at least 32%.

15. A method of enhancing transparency soap bars comprising:
a) balancing a fatty acid blend, wherein the fatty acid blend comprises at least C 16 (palmitic acid) and C 18 (stearic acid), their salts or their mixtures thereof;
b) adding co-adjuvants selected from the group of polyols, polymers, organic and inorganic adjuvants, electrolytes, benefit agents and other minor ingredients in an amount from 0.1 to 40% by weight of the soap composition;
c) adding remainder of water,

wherein the soap bar composition comprises a balanced fatty acid blend with a ratio by weight of saturated C 16 (palmitic acid) to saturated C 18 (stearic acid) in the blend (and in final bar) acid having a ratio in the range from 0.7 to 1.4.

Assignees

• Conopco Inc

Inventors

• Astolfi Rafael
• Basso Jorge Luiz
• Leopoldino Sergio Roberto

Classifications

• C11D9/007 Primary

  Soaps or soap mixtures with well defined chain length · CPC title

• C11D3/221

  Mono, di- or trisaccharides or derivatives thereof · CPC title

• C11D13/18

  by extrusion or pressing · CPC title

• C11D17/0095 Primary

  Solid transparent soaps or detergents · CPC title

• C11D3/2065

  Polyhydric alcohols · CPC title