Polycarbonate-silicone block copolymer compositions
US4994532A · kind A · utility
32Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Jun 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/186
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Carboxylic acid functionalized polydimethylsiloxane fluids react with polycarbonate in the melt to form polydimethylsiloxane/polycarbonate block copolymers. The resultant copolymers are transparent and show improved flow and thick section impact relative to the polycarbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.