Method for sizing paper using hydrolyzed homopolymers or copolymers of meta- or para- isopropenyl-amp;agr;,amp;agr;- dimethylbenzylisocyanate

摘要

A method of sizing paper, comprising applying thereto a sizingly effective amount of a polymer selected from the group consisting of: PP(a) homopolymers of &agr;,&agr;-dimethyl-m- isopropenyl benzyl amine or &agr;,&agr;-dimethyl-p-isopropenyl benzyl amine; PP(b) copolymers of (i) &agr;,&agr;-dimethyl-m- isopropenyl benzyl amine or &agr;,&agr;-dimethyl-p-isopropenyl benzylamine, and (ii) at least one other ethylenically unsaturated monomer copolymerizable therewith; andPP(c) acid salts of said homopolymers (a) and copolymers (b).PPSuch homopolymers or copolymers suitably may be prepared as the hydrolysis reaction products of the corresponding homopolymeric or copolymeric isocyanates.