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:
Oct. 28, 1997
Filed:
Jun. 28, 1994
Applicant:
Inventors:
Barney Vallino, Naperville, IL (US);
Daniel A Batzel, Skokie, IL (US);
Assignee:
Donlar Corporation, Bedford Park, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528328 ; 528363 ; 528392 ; 525418 ; 525419 ; 525420 ; 525539 ;
Abstract
Polysuccinimide is produced by thermal polymerization of a precursor or a reactant admixture that includes an unsaturated compound in a plate-type reactor at temperatures sufficient to initiate polymerization and to form a brittle solid. The so-obtained polysuccinimide can be hydrolyzed to polyaspartic acidor to a polyaspartic acid salt, if desired. The precursor can be a monomer or a mixture of reactants that form polymerizable intermediates.