Flame retardant organopolysiloxane-polycarbonate triblock copolymers
US5025074A · kind A · utility
9Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1990 |
| Grant date | Jun 18, 1991 |
| Priority date | — |
| Expiry date | Aug 27, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/448
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Phenol-organopolysiloxane chainstoppers are phosgenated in combination with a bisphenol to make flame retardant organopolysiloxane-polycarbonate triblock copolymers. The phenol-organopolysiloxane chainstoppers can be made by effecting addition between an aliphatically unsaturated phenol and a silicon-hydride organopolysiloxane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.