Method for preparing poly(vinyl alcohol)-...

Details Method for preparing poly(vinyl alcohol)-... Method for preparing poly(vinyl alcohol)-...

C - Chemistry, Metallurgy

08

F

402/497

C08F 8/12 (2006.01) C08F 216/06 (2006.01)

Patent

CA 1330684

ABSTRACT Vinyl acetate and an N-vinyl formamide are copolymerized to yield poly(vinyl acetate)-co-poly(N-vinyl formamide) which is base hydrolyzed to poly(vinyl alcohol)-co-poly(N-vinyl forma- mide). Two phase hydrolysis of particles of poly(vinyl alcohol)- co-poly(N-vinyl formamide) as a slurry in methanol yields par- ticles of poly(vinyl alcohol)-co-poly(vinylamine). Provided is a copolymer of the following general formula Image where m is 0 to 15 mole%, n is 50 to 99 mole%, x is 0 to 30 mole%, and y is 1 to 50 mole%.

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