The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 1999
Filed:
Jan. 16, 1996
Applicant:
Inventor:
Yueting Chou, Chesterfield, MO (US);
Assignee:
Solutia Inc., St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528328 ; 528361 ; 528364 ; 528480 ; 528495 ; 528503 ; 525420 ; 548520 ;
Abstract
There is disclosed a process for preparing polysuccinimide by the thermal polycondensation of amino acids such as L-aspartic acid in the presence of an acidic catalyst for the polycondensation reaction and a surfactant either in the dry state or in the presence of a high boiling organic reaction medium whereby a polymer is provided more efficiently.