Process for preparing polysuccinimide and polyaspartic acid

Details Process for preparing polysuccinimide and polyaspartic acid Process for preparing polysuccinimide and polyaspartic acid

1995-08-18

1997-03-11

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5263182, 526240, C08F12058, C08F12202

Patent

active

056102550

ABSTRACT:
Polysuccinimide and polyaspartic acid are prepared by polymerizing maleic anhydride, ammonia and water or maleic acid derivatives or fumaric acid derivatives in bulk or dissolved in solvents in a continuous kneading reactor. The polysuccinimide formed can be converted into polyaspartic acid and polyaspartate salts by hydrolysis.

REFERENCES:
patent: 5116513 (1992-05-01), Koskan et al.
patent: 5288783 (1994-02-01), Wood
patent: 5393868 (1995-02-01), Freeman et al.

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