Transparent polycarbonate-polysiloxane copolymer blend, method for the preparation thereof, and article derived therefrom
US7135538B2 · kind B2 · utility
29Cited by
56References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Sep 24, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition includes a polycarbonate-polysiloxane block copolymer that has at least one polycarbonate block and at least one polysiloxane block, and a surface modifying agent that includes at least one polysiloxane segment. Increased levels of the surface modifying agent can be incorporated without compromising high transmittance and low haze. The compositions also exhibit improved hemocompatibility and are therefore useful for a variety of articles that may contact blood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.