Polymer products comprising soft and elastic biodegradable polyhydroxyalkanoate copolymer compositions and methods of preparing such polymer products
US6794023B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Apr 25, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2915
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Soft and elastic polymer products arc obtained by stretching a composition comprising a biodegradable polyhydroxyalkanrate copolymer comprising at least two randomly repeating monomer units. The first randomly repeating monomer unit has the structure (I), wherein R1 is H, or C1 or C2 alkyl, and n is 1 or 2. The second randomly repeating monomer unit has the structure (II), wherein R2 is a C3-C19 alkyl or C3-C19 alkenyl. At least about 70 mole % of the copolymer comprises randomly repeating monomer units having the structure of the first randomly repeating monomer unit (I). The products exhibit advantageous combinations of softness and elasticity while maintaining strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.