Process for the preparation of polyhydroxycarboxylic acid copolymer resin
US5844068A · kind A · utility
7Cited by
4References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1997 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Mar 12, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/36
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the preparation of a readily hydrolyzable and/or biodegradable polyhydroxycarboxylic acid resin which can be used in agricultural materials, gardening materials, fishery materials, caking materials, medical instruments and materials, etc. and, even when discarded after use, which undergoes hydrolysis and/or is biodegraded into carbon dioxide, water, etc. Also disclosed are a hydrolyzable and/or biodegradable polyhydroxycarboxylic acid resin composition having an increased resin strength and melt viscosity, and a process for the preparation thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.