Verfahren zur Herstellung von Poly(vinylalkohol)-Copoly(vinylamin) durch ein Zwei-Stufen-Verfahren.

摘要

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 formamide). Two phase hydrolysis of particles of poly(vinyl alcohol)-co-poly(N-vinyl formamide) as a slurry in methanol yields particles of poly(vinyl alcohol)-co-poly(vinylamine). Provided is a copolymer of the following general formula 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%. i