Process for producing fluorosilicon polymers
US6492479B2 · kind B2 · utility
1Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2001 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Aug 22, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention comprises a method for producing fluorosilicone oil by reacting a fluorosilicone trimer with a triorganosilanol in the presence of an alkali silanolate. The polymer may be condensed to increase viscosity and decrease the silanol content of the polymer, and volatiles may be removed by stripping. The method provides a high yield of fluorosilicone oil of narrow viscosity ranges in an efficient reaction, and produces small amounts of waste.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.