Process for preparing polyaspartic acid

Details Process for preparing polyaspartic acid Process for preparing polyaspartic acid

1995-09-07

1998-02-03

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 2600

Patent

active

057145580

ABSTRACT:
Polyaspartic acid is prepared by polymerization of aspartic acid, maleic acid anhydride, maleic acid or fumaric acid in a solvent at from 130.degree. C. to 300.degree. C., optionally in the presence of ammonia.

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Dessaignes, The Quarterly Journal of the Chemical Society of London ,vol. III, pp. 187 and 188, (1851), Translation of Compt. Rend. XXX 324.
Kovacs et al., Chemical Studies of Polyaspartic Acid, J. Org. Chem., vol. 26, pp. 1084-1091 (1961).
Orbit Abstract of DE-A-2 253 190 (5/10/73).
Harada et al., Polycondensation of Thermal Precursors of Aspartic Acid, J. Org. Chem., vol 24, pp. 1662-1666 (1959).

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