Synthesis and applications of polymaleimide

Details Synthesis and applications of polymaleimide Synthesis and applications of polymaleimide

2005-04-12

2005-04-12

Hampton-Hightower, P. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C528S310000, C528S322000, C528S328000, C528S345000, C528S363000, C528S367000, C528S480000, C528S488000, C526S173000, C526S210000, C526S212000, C526S262000, C526S282000, C525S282000, C525S309000, C510S108000, C510S317000, C510S318000, C510S531000, C252S175000

Reexamination Certificate

active

06878797

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.

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