D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
8/93.43
D21H 17/45 (2006.01) C08F 12/28 (2006.01)
Patent
CA 1215803
METHOD FOR SIZING PAPER USING HYDROLYZED HOMOPOLYMERS OR COPOLYMERS OF META- OR PARA-ISOPROPENYL-.alpha.,.alpha.- DIMETHYLBENZYLISOCYANATE Abstract of the Disclosure A method of sizing paper, comprising applying thereto a sizingly effective amount of a polymer selected from the group consisting of: (a) homopolymers of .alpha.,.alpha.-dimethyl-m-isopropenyl benzyl amine or .alpha.,.alpha.-dimethyl-p-isopropenyl benzyl amine; (b) co- polymers of (i) .alpha.,.alpha.-dimethyl-m-isopropenyl benzyl amine or .alpha.,.alpha.- dimethyl-p-isopropenyl benzylamine, and (ii) at least one other ethylenically unsaturated monomer copolymerizable therewith; and (c) acid salts of said homopolymers (a) and copolymers (b). Such homopolymers or copolymers suitably may be prepared as the hydrolysis reaction products of the corresponding homopolymeric or copolymeric isocyanates. The copolymers of (b) also contain at least 1% by weight of repeating units derived from the amine mono- mer (i).
455397
Forgione Peter S.
Sedlak John A.
Singh Balwant
American Cyanamid Company
Smart & Biggar
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