Combination of polyion complex particle and non-polymeric base having two or more dissociation constants
US11452676B2 · kind B2 · utility
1Cited by
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14Claims
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Key dates
| Filing date | Jun 8, 2018 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Jun 8, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/542
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising: (a) at least one particle, comprising at least one cationic polymer, at least one anionic polymer and at least one non-polymeric base having two or more pKb values or salt(s) thereof; and (b) at least one physiologically acceptable volatile medium. The composition according to the present invention is stable, and can have a variety of cosmetic functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.