Microwave-activated preparation of silicone foams, and compositions useful therein
US5438081A · kind A · utility
3Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1994 |
| Grant date | Aug 1, 1995 |
| Priority date | — |
| Expiry date | Oct 20, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2383/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Silicone foams are prepared by microwave curing of a mixture of at least one polyorganosiloxane having vinyl groups attached to silicon; at least one hydride polysiloxane; a blowing agent comprising water and, preferably, at least one monohydroxyaliphatic compound, a cyclodextrin inclusion compound of a platinum group metal coordination complex (preferably with a cyclic diene) and a filler. The use of the inclusion compound as a catalyst increases the shelf life of the composition, whereupon curing and foaming occur together upon exposure to microwave radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.