Polycarbonate-polyester block copolymer compositions, methods, and articles
US7671169B2 · kind B2 · utility
6Cited by
6References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2007 |
| Grant date | Mar 2, 2010 |
| Priority date | — |
| Expiry date | Mar 6, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2261/126
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polycarbonate-polyester block copolymer includes a polycarbonate block and a polyester block, each having specific structures. The block copolymer can be prepared, at least in part, from renewable feedstocks. In some forms, the block copolymer includes biodegradable segments that facilitate structural breakdown of objects molded from the block copolymer. Methods of preparing the block copolymer are described as are compositions that include it and articles prepared from it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.