Copolymers of D,L-lactide and epsilon caprolactone
US4045418A · kind A · utility
147Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1975 |
| Grant date | Aug 30, 1977 |
| Priority date | — |
| Expiry date | Jan 28, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically inactive lactide, i.e., D,L-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 85 parts by weight of D,L-lactide and 15 parts by weight of epsilon caprolactone is a thermoplastic elastomer. A copolymer prepared from 90 parts by weight of D,L-lactide and 10 parts by weight of epsilon caprolactone is a rigid, clear, thermoplastic solid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.