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Cosmetic composition for hair

A cosmetic composition and composition technology, applied in the field of improving the moisture resistance of the composition

Pending Publication Date: 2021-11-26
爱森集团
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymer is insoluble in water and therefore not suitable for use in aqueous compositions

Method used

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  • Cosmetic composition for hair
  • Cosmetic composition for hair
  • Cosmetic composition for hair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 7 and 8

[0115] A methacrylic acid homopolymer (Example 7) was prepared according to the method described in the scientific publication "High Molecular Weight Poly(methacrylic acid) with Narrow Polydispersity by RAFT Polymerization" - Macromolecules, 2009, 42, pages 1494-1499, i.e. containing 100 mol% of methacrylic acid monomer units. The polymer obtained corresponds to Example 7.

[0116] Another polymer was prepared according to the same method, except that 12 mol% of methacrylic acid was replaced by 12 mol% of acrylic acid. The polymer obtained corresponds to Example 8.

Embodiment 7

[0117] The polymer of Example 7 has such a high viscosity that it cannot be used by formulators of cosmetic compositions as it is too difficult to handle. Dilution tests with reduced viscosity also do not yield user-satisfactory products due to stability issues. Therefore its properties are not evaluated.

Embodiment 8

[0118] The polymer of Example 8 was processable. Hairspray composition C'8 was prepared with the polymer of Example 8 according to the formulation in Table 2. The gel viscosity is 52,000CPS and the transparency is 91%. The same moisture resistance test as in part 3 / was carried out and the curl retention was 93% for 300 minutes, which is very satisfactory and demonstrates the technical effect of the polymer of the present invention.

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Abstract

The invention relates to an aqueous cosmetic composition for hair care and maintenance, comprising at least one setting resin, said resin comprising at least 20 mol% of a monomeric unit of methacrylic acid and / or one of the salts thereof; and optionally at least one monomeric unit of acrylic acid and / or maleic anhydride, and / or one of the salts thereof, the resin having a weight-average molecular weight greater than or equal to 20,000 g / mol. The invention also relates to the use of the setting resin to improve the resistance of these cosmetic compositions to moisture.

Description

technical field [0001] The present invention relates to the technical field of hair care and styling utilizing cosmetic compositions. [0002] The subject of the present invention is an aqueous cosmetic composition comprising a styling resin of specific chemical nature and the use of this resin for improving the moisture resistance of said composition. Background technique [0003] The styling agents used in hairspray are usually film-forming polymers that bind the hair together, making it easier to style. Commonly used sizing agents are natural gums such as guar gum or anionic or neutral polymers. [0004] To be effective, they must meet a certain number of criteria, largely guided by consumer perception. For example, the film must be transparent, more or less flexible depending on the desired effect, but must have a certain strength and a certain robustness. Also, the film must not flake off over time or under pressure (combing, rubbing) and must not become tacky when w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61Q5/06A61K8/81C08L33/02
CPCA61K8/8147A61Q5/06C08L33/02C08L33/10C08F220/06A61K8/042A61K2800/48A61K2800/95
Inventor 弗雷德里克·勃朗德尔托马斯·布尔西耶夏琳·博特
Owner 爱森集团
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