Back to results
US 4,536,552 AGranted
Polyamidoamine containing pendant ammonium moiety having crosslinking functionality
AssigneeThe Dow Chemical Company
InventorsGeorge R. Killat, Larry R. Wilson
Life of this patent
Estimating the term…
Abstract
Wet strength of paper is effectively increased by contacting paper pulp with an ammonium polyamidoamine having cross-linking functionality such as epoxy or azetidinium and subjecting a wet sheet of such pulp to conditions sufficient to cure the polyamidoamine.
Claims7
A water soluble polyamidoamine containing a repeating unit represented by the formula:
- ##STR13## wherein G is a pendant ammonium moiety having a cross-linking functionality, each R.sup.3 is independently hydrogen or lower alkyl, each m is a whole number from 2 to 6, and n is a whole number from 1 to 3.
Dependencies are inferred from the claim text.