Acrylate/maleic anhydride copolymer grafted polyvinyl alcohol gr

Details Acrylate/maleic anhydride copolymer grafted polyvinyl alcohol gr Acrylate/maleic anhydride copolymer grafted polyvinyl alcohol gr

1990-07-30

1991-04-23

Bleutge, John C.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525194, C08G 8102

Patent

active

050101340

ABSTRACT:
A polyvinyl alcohol graft terpolymer comprises 70-30% by weight of polyvinyl alcohol and 30-70% by weight of acrylate/maleic anhydride copolymer having 95-30 mole % of acrylate and 50-70 mole % of maleic anhydride, which is prepared by a condensation-coupling reaction through esterification being performed between the hydroxy groups of the polyvinyl alcohol and the anhydride groups of the acrylate/maleic anhydride copolymer. The polyvinyl alcohol graft terpolymer may be further subjected to a heat treatment to have better water resistance and mechanical properties due to the interchain ester linkage between the hydroxyl groups and the anhydride groups therein. Alternatively, the polyvinyl alcohol graft terpolymer may be reacted with an amine to produce a maleamic acid intermediate, and then dehydated to form a maleimide derivative.

REFERENCES:
patent: 4511682 (1985-04-01), Mayer
patent: 4600746 (1986-07-01), Schmukler

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