Process for the preparation of polysuccinimide, polyaspartic aci

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

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524548, 524549, 524599, 524601, 524606, 525418, 525419, 525420, 528328, 528392, C08G 7310, C08G 8500

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active

054688388

ABSTRACT:
Polysuccinimide, polyaspartic acid and their salts are prepared by reaction of maleic anhydride and ammonia, polycondensation of the resulting product in the presence of a solubilizing agent and, if appropriate, hydrolysis.

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Dessaignes, Quarterly Journal of the Chemical Society of London, vol. III, reprinted 1950, Translation of Comp. Rend. XXX, 324.
Dessaignes, Comp. Rend. XXXI, 432-433 (1850).
Kovacs et al., J. Org. Chem. 26, 1084 (1961).
Harada, Polycondensation of Thermal Precusors of Aspartic Acid, Journal of Org. Chem., vol. 24, pp. 1662-1666 (1959).

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