Wet strength paper additives
AssigneeMonsanto Company
InventorDonald N. Van Eenam
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Abstract
A polymer is described which has particular utility as an additive imparting wet and dry strength to a paper base. The polymer is formed by the reaction of a polymer of an N,N-disubstituted vinyl-benzyl amine or homologue thereof with an epihalohydrin.
Claims5
A polymeric wet strength additive wherein from 5 to 100% of the recurring units have the formula ##STR4## Y is selected from ##STR5## X is a radical derived from water-soluble proton acid, R is a C.sub.1 to C.sub.3 alkylene group, R.sub.1 and R.sub.2 are each substituted or unsubstituted C.sub.1 to C.sub.4 alkyl groups or, taken with the nitrogen together represent a saturated heterocyclic group, and b is an integer from 1 to 3.
A polymeric wet strength additive wherein from 5 to 100% of the recurring units have the formula:
- ##STR6## wherein Y is ##STR7## and X is an anion derived from a water-soluble proton acid.
Dependencies are inferred from the claim text.