Polysiloxanes and gels and pastes containing them
US7019098B2 · kind B2 · utility
12Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | May 14, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2383/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A crosslinked polysiloxane comprises polysiloxane chains substituted by an ester-containing organic moiety joined by crosslinks derived from the reaction of an alpha, omega-diunsaturated hydrocarbon or fluorohydrocarbon with Si—H groups on the polysiloxane chains. The ester-containing organic moiety has the formula -A-COOR where A is an alkylene linkage having 1–18 carbon atoms which is optionally fluoro-substituted and R is an alkyl or fluoroalkyl group. The crosslinked polysiloxane can form an elastomeric gel in a liquid organic or silicone material, which is useful in preparing cosmetics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.