Thermoplastic biodegradable resins and a process of preparation thereof
US5470941A · kind A · utility
26Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Dec 23, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/82
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic biodegradable resin having a number average molecular weight of 25,000-45,000, which is prepared by polycondensing one or a plurality of dicarboxylic acids represented by formula (I) with one or a plurality of diols represented by formula (II): EQU ROOC--(--CH.sub.2 --).sub.n --COOR (I) EQU HO--(--CH.sub.2 --).sub.m --OH (II) wherein R and R' are both hydrogen or are both methyl, n is 2 to 8 and m is 2 to 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.