Production of succinimide copolymers in cyclic carbonate solvent

Details Production of succinimide copolymers in cyclic carbonate solvent Production of succinimide copolymers in cyclic carbonate solvent

1998-01-13

1999-08-17

Sellers, Robert E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

524606, 525420, 525434, 525435, 525436, 528321, 528328, C08G 7310, C08G 7314, C08G 7316

Patent

active

059395176

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.

REFERENCES:
patent: 5484945 (1996-01-01), Nagatomo et al.
patent: 5508434 (1996-04-01), Batzel et al.
patent: 5610208 (1997-03-01), Diaroku et al.
patent: 5610264 (1997-03-01), Wood et al.
CAPLUS accession No. 1978:170465, Kokufuta et al., Potentiometric titration behavior of polyaspartic acid prepared by thermal polycondensation, Biosystems, vol. 9, No. 4, pp. 211-214, 1977.

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