Cationic polymer nanoparticles encapsulating an active ingredients, and the cosmetic composition containing the same
US8877217B2 · kind B2 · utility
4Cited by
4References
4Claims
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Key dates
| Filing date | Oct 18, 2006 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Apr 14, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/34
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed herein are cationic polymer nanocapsules encapsulating an oil-soluble active ingredient, and a cosmetic composition containing the same. The cationic polymer nanocapsules have a molecular weight of 5,000-100,000, a surface potential of 5-100 mV and a particle size of 50-500 nm. Also, disclosed is a cosmetic composition containing said cationic polymer nanocapsules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.