Production of polysuccinimide in cyclic carbonate solvent
US5756595A · kind A · utility
4Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1997 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Mar 3, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1092
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the preparation of a desired molecular weight polysuccinimide by the catalytic polymerization of aspartic acid in the presence of a cyclic carbonate solvent. Polysuccinimide of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.