Polymers capable of absorbing ultraviolet radiation, their preparation and their use in cosmetic compositions
US4839160A · kind A · utility
23Cited by
4References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 25, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Mar 25, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/05
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An ultraviolet radiation absorbing polymer having units of formula I: ##STR1## wherein X is a group derived from benzylidene-bornanone of formula II ##STR2## wherein R.sup.1 represents hydrogen or C.sub.1 -C.sub.12 alkoxy and PA0 R.sup.2 represents C.sub.4 -C.sub.12 alkyl. The polymer is useful in protecting human skin against sunburn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.