Method for thickening a cosmetic formulation using an alkali swellable emulsion of a polymer with amps and which is rich in acrylic acid
US11065191B2 · kind B2 · utility
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6References
20Claims
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Key dates
| Filing date | Oct 12, 2016 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Mar 21, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/585
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Process for thickening a composition, through the use of a direct emulsion in water, which is alkali-swellable, of a polymer of the ASE or HASE type, which is both rich in acrylic acid and which has a certain quantity of AMPS. The use of such emulsions simultaneously allows there to be no obligation to use surfactants and organic solvents other than water, and allows the thickening phenomenon to be activated for pHs of less than 7: this latter characteristic is particularly advantageous for formulations intended to be used in contact with skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.