Polyamino salts of alpha-hydroxyacids, alpha-ketoacids and related compounds
US5425938A · kind A · utility
16Cited by
9References
8Claims
0Family size
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Key dates
| Filing date | Jan 28, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Jan 28, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/05
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Cosmetic compositions are described wherein .alpha.-hydroxyacids, .alpha.-ketoacids and related compounds are formed into amine salts through neutralization with a multi-amine functionalized polymer. Particularly preferred are glycolic acid and lactic acid salts of poly(ethylenimine).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.