Flame retardant organopolysiloxane-polycarbonate graft copolymers
US5039772A · kind A · utility
9Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1990 |
| Grant date | Aug 13, 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
Flame retardant graft organopolysiloxane-polycarbonate copolymers are provided which can be made by effecting addition between a silicon-hydride siloxane and an aliphatically unsaturated substituted bisphenol followed by phosgenation of the resulting adduct. Alternatively, direct addition of the silicon-hydride siloxane onto an aliphatically unsaturated substituted polycarbonate backbone also can be effected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.