Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1994-03-31
1994-12-06
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
525418, 525419, 525420, 528328, C08G 6900
Patent
active
053711807
ABSTRACT:
Polysuccinimide is prepared by reaction of fumaric acid, maleic acid or a derivative thereof with urea, isourea, carbamic acid, ammonium carbamide, ammonium bicarbonate, diammonium carbonate or mixtures of the abovementioned substances in a reactor at temperatures of preferably 100.degree. C. to 300.degree. C. over reaction times of preferably 0.5 minute to 300 minutes.
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Boehmke Gunter
Groth Torsten
Joentgen Winfried
Schmitz Gerd
Traenckner Hans-Joachim
Bayer AG
Dodson Shelley A.
Foelak Morton
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