Isosorbide diester as pearlizing agent and opacifier

Patent metadata

Field	Value
Publication number	US-10294238-B2
Application number	US-201615568503-A
Country	US
Kind code	B2
Filing date	Apr 14, 2016
Priority date	Apr 24, 2015
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

A description is given of a composition comprising at least one isosorbide diester, at least one isosorbide monoester and at least one fatty acid, and also of a process for the preparation thereof. In addition, the present invention relates to the use of this composition as pearlizing agent and opacifier in cosmetic compositions and detergents.

First claim

The invention claimed is:

1. A composition comprising
at least 70% by weight of a mixture of isosorbide distearate, isosorbide dipalmitate, and isosorbide palmitate stearate as constituent (A),
0.01% by weight to 20% by weight of a mixture of isosorbide monostearate and isosorbide monoplamitate as constituent (B) and
1 to 30% by weight of a mixture of stearic acid and palmitic acid as constituent (C).

2. The composition according to claim 1 , wherein the weight ratio of isosorbide dipalmitate to isosorbide distearate in the composition is 45:55 to 1:99, the weight ratio of isosorbide monopalmitate to isosorbide monostearate in the composition is 45:55 to 1:99, and the weight ratio of palmitic acid to stearic acid in the composition is 45:55 to 1:99.

3. The composition according to claim 1 comprising:
isosorbide distearate, isosorbide dipalmitate, and isosorbide palmitate stearate in an amount of 82 to 88% by weight, based on the composition, with a ratio of isosorbide dipalmitate to isosorbide distearate of 30:70 to 2:98;
isosorbide monostearate and isosorbide monopalmitate in an amount of 1 to 10% by weight, based on the composition, with a ratio of isosorbide monopalmitate to isosorbide monostearate of 30:70 to 2:98; and
stearic acid and palmitic acid in an amount of 5 to 20% by weight, based on the composition, with a ratio of palmitic acid to stearic acid of 30:70 to 2:98.

4. The composition according to claim 1 , wherein a weight ratio of diesters of the isosorbide to monoesters of the isosorbide is at least 4:1.

5. The composition according to claim 1 , wherein an amount of isosorbide distearate, isosorbide monostearate and stearic acid is at least 70% by weight, based on the composition.

6. A process for the preparation of a composition according to claim 1 , wherein an esterification product is obtained by esterifying an isosorbide with at least one fatty acid.

7. The process according to claim 6 , wherein, in the esterification, an excess of fatty acid to isosorbide of at least 2.05 equivalents of fatty acid, based on 1 equivalent of isosorbide is used.

8. A method of pearlizing and/or opacifying a cosmetic a cosmetic composition or a detergent comprising the use of a composition according to claim 1 as a pearlizing agent and/or opacifier.

9. The method according to claim 8 wherein the cosmetic composition or detergent is a hand cleanser or wool detergent.

10. The method according to claim 8 for the cleaning of hard surfaces selected from the group consisting of metal, glass, porcelain, ceramic, tiles, stone, varnished surfaces, plastics, wood, and leather.

11. The method according to claim 9 for cleaning woven goods, knitwear, textiles, carpets, and/or curtains.

Assignees

• Basf Se

Inventors

• Stoer Claudia
• Weissenegger Markus
• Nieendick Claus
• Winzek Mirella

Classifications

• A61K2800/436

  Interference pigments, e.g. Iridescent, Pearlescent · CPC title

• A61K8/361

  Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof · CPC title

• A61K8/375

  the alcohol moiety containing more than one hydroxy group · CPC title

• C07D493/04 Primary

  Ortho-condensed systems · CPC title

• C11D3/0089

  Pearlescent compositions; Opacifying agents · CPC title