Process for the preparation of polysuccinimide

Details Process for the preparation of polysuccinimide Process for the preparation of polysuccinimide

1994-04-08

1996-02-20

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528328, 528360, 525418, 525419, 525420, C08G 6900

Patent

active

054930049

ABSTRACT:
The invention relates to an improved process for the preparation of polysuccinimide from maleic anhydride and ammonia, characterized in that the starting compounds are brought to reaction in liquid form in a tubular reactor with feed nozzle at temperatures of preferably 50.degree. C. to 500.degree. C. and residence times of preferably 0.1 to 600 seconds and the resulting reaction mixture is possibly further polymerized thermally in a high-viscosity reactor preferably continuously operated at 120.degree. C. to 300.degree. C.

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Dessaignes, Compt. Rend. XXXI, pp. 432 and 433 (1850).
Kovacs et al., J. Org. Chem. vol. 26, pp. 1084-1091 (1961).
Harada, J. Org. Chem. vol. 24, pp. 1662-1666 (Mar. 1959).

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