Abstract: A method for producing polysuccinimide is provided. Thermal polymerization of fumaramic acid at a temperature of from about 160.degree. C. to about 330.degree. C. produces polysuccinimide. The reaction is optionally conducted in the presence of one or more processing aids, solvents or diluents. The polysuccinimide is particularly useful as a detergent additive.
Type:
Grant
Filed:
July 20, 1993
Date of Patent:
June 13, 1995
Assignee:
Rohm and Haas Company
Inventors:
Yi H. Paik, Graham Swift, Ethan S. Simon, Michael B. Freeman
Abstract: A process is provided for preparing polysuccinimides by forming a polymerization mixture of poly(alkylene glycol), aspartic acid and, optionally, one or more other amino acids; heating the mixture to an elevated temperature; and maintaining the mixture at the elevated temperature to form polysuccinimides.
Type:
Grant
Filed:
July 10, 1992
Date of Patent:
January 10, 1995
Assignee:
Rohm and Haas Company
Inventors:
Yi H. Paik, Ethan S. Simon, Graham Swift
Abstract: A process is provided for preparing polysuccinimides by forming a polymerization mixture of poly(alkylene glycol), maleamic acid and, optionally one or more other amic acids, heating the mixture to an elevated temperature, and maintaining the mixture at the elevated temperature to form polysuccinimides.
Type:
Grant
Filed:
July 10, 1992
Date of Patent:
December 6, 1994
Assignee:
Rohm and Haas Company
Inventors:
Yi H. Paik, Ethan S. Simon, Graham Swift
© 2024 Justia
