Composition and process for the production of poly(3-hydroxyalkanoates)
US5563239A · kind A · utility
99Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1994 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Nov 9, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a novel process for the production of poly(3-hydroxyalkanoates) through the condensation polymerization of esters of 3-hydroxyalkanoic acids at a temperature of about 90.degree. to 200.degree. C. in the presence of a titanium catalyst. Also is disclosed a novel composition that is a poly(3-hydroxyalkanoate) containing predominantly carboxylic ester end groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.