Biodegradable resin composition and preparation process thereof
US6114496A · kind A · utility
8Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1999 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Aug 6, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/85
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a biodegradable resin composition, comprising: providing a reaction mixture comprising at least one hydroxycarboxylic acid and, as a polymerization catalyst, a monoorganotin derivative; heating and stirring the reaction mixture, wherein the heating and stirring step is carried out under a reduced pressure to cause condensation polymerization or carried out in an organic solvent to cause azeotropic dehydrating polymerization. Also disclosed in a biodegradable resin composition prepared by the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.