Aspartic acid copolymers and their preparation

Details Aspartic acid copolymers and their preparation Aspartic acid copolymers and their preparation

1994-07-29

1995-12-26

Dodson, Shelley A.

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

Synthetic resins

From carboxylic acid or derivative thereof

525418, 525419, 525420, 528328, 528332, 528335, 528345, C08G 6948

Patent

active

054789192

ABSTRACT:
Aspartic acid precursors such as mono and diammonium maleate, maleamic acid, ammonium maleamate, ammonium malate and mixtures of these and other precursors are copolycondensed thermally with a variety of mono, di and multifunctional monomers containing amino, hydroxyl and carboxyl functional groups. The resulting condensation copolymers and terpolymers contain succinimide units derived from aspartic acid precursors, condensed with other functional group monomers usually though amide and ester linkages. Hydrolysis of the polysuccinimide copolymers and terpolymers with alkali, alkaline earth and ammonium hydroxide produces aspartic acid copolymer and terpolymer salts.

REFERENCES:
patent: 2306918 (1940-02-01), Weiss et al.
patent: 3846380 (1972-10-01), Fujimoto et al.
patent: 5292858 (1994-03-01), Wood
patent: 5357004 (1994-10-01), Calton et al.

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