Solution polymerizing aspartic acid and monomer to form succinimide copolymer
US6399715B2 · kind B2 · utility
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4References
1Claims
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Key dates
| Filing date | Mar 5, 2001 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Mar 5, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1092
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers 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.