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:
Apr. 12, 2005
Filed:
Apr. 19, 2002
Kris A. Berglund, Okemos, MI (US);
Parminder Agarwal, East Lansing, MI (US);
Qiuyue Yu, Fishers, IN (US);
Adam Harant, Boulder, CO (US);
Kris A. Berglund, Okemos, MI (US);
Parminder Agarwal, East Lansing, MI (US);
Qiuyue Yu, Fishers, IN (US);
Adam Harant, Boulder, CO (US);
Board of Trustees of Michigan State University, East Lansing, MI (US);
Applied CarboChemicals, Alto, MI (US);
Abstract
A process for producing alkali metal polymaleimide salts by alkaline hydrolysis of maleimide polymers prepared by polymerization of maleimide monomers in the presence of a metal oxide and alcohol initiator or a base. In particular, the process produces alkali metal polymaleimide salts with particular ratios of C—N and C—C connected maleimide-derived monomer units which are dependent on the particular initiator used to synthesize the maleimide polymer. The alkali metal polymaleimide salts, which have chelating and anti-scaling properties, are useful as chelating agents and detergent builders and as such are suitable biodegradable replacements for synthetic polymers and sodium polyaspartate.