Polycarbonate-polysiloxane block copolymers
US6657018B1 · kind B1 · utility
33Cited by
7References
18Claims
0Family size
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Inventor
Key dates
| Filing date | Jun 1, 2000 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jun 1, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0066
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Block copolymers suitable as molding resins are provided having polycarbonate blocks and polysiloxane blocks of the structure where R1, R2, Y and m are as defined herein, and where the weight percentage of blocks of polycarbonate blocks is from 92 to 96% and the weight percentage of siloxane from blocks of polysiloxane blocks is from 4 to 8%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.