Gellation process for silicone varnish resins
US5274066A · kind A · utility
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12References
15Claims
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Key dates
| Filing date | Nov 3, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Nov 3, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/56
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the gelling of a silicone varnish comprises reacting the silicone varnish with an organic coupling agent, preferably an organometallic coupling agent under conditions which are effective and to provide a gel. This gel has a viscosity which is effective for suspending high density particles in the resin without settling of the particles during subsequent processing such as spraying, casting, and/or curing processes. The silicone varnish contains hydroxyl substituents, and is preferably a polyhydroxy substituted silicone varnish, i.e., silanols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.