Method of imparting wet strength to paper products

Details Method of imparting wet strength to paper products Method of imparting wet strength to paper products

1978-06-21

1980-07-01

Bashore, S. Leon

Paper making and fiber liberation

Processes and products

Non-fiber additive

162164EP, 162168R, 162168N, D21D 300

Patent

active

042104890

ABSTRACT:
The present invention relates to a method of forming paper webs having high wet strength and water absorbency by impregnating cellulose fibrous material with an aqueous composition made from a mixture of copolymers comprising an effective amount of (A) a hydrolyzed product of a copolymer having the general formula: ##STR1## wherein R, R', R", and R'" are each of C.sub.1 -C.sub.4 alkyl group; A is a quarternary ammonium anion; y has a value of 0 to 1; and a is an integer and b and c are each integers including zero such that the ratio of a to b plus c is from about 2:1 to 1:2 and (B) a reaction product of a secondary alkylamine with a primary amine and with an epihalohydrin.

REFERENCES:
patent: 2723195 (1955-11-01), Blake
patent: 3248353 (1966-04-01), Coscia
patent: 3291679 (1966-12-01), O'Brien

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