MODIFIED VINYLAMINE CONTAINING POLYMERS AND THEIR USE IN PAPERMAKING

摘要

A graft copolymer composition of a vinyl monomer and a functionalized vinylamine-containing base polymer and a method of preparing the graft copolymer. It also relates to a paper product made using the composition as a papermaking additive.

主权项

1. A graft copolymer composition of a vinyl monomer and a functionalized vinylamine-containing base polymer wherein the functionalized vinylamine-containing base polymer comprises randomly distributed repeating monomer units having the formula (I), (II) and (III), wherein R is a reacted α,β-unsaturated alkyl carbonyl compound through Michael addition by vinylamine in the polymer; n, p and q are the numbers indicating mole % of the repeating units of formula (I), (II) and (III) present in the functionalized vinylamine-containing polymer; and wherein n can be from about 5 mole % to about 99 mole %, p can be from about 1 mole % to about 80 mole %, q can be from about 0 mole % to about 30 mole %; wherein the mole ratio of the functionalized vinylamine-containing polymer to the vinyl monomer in the graft polymer is in the range of from about 40:60 to about 80:20, can be from about 20:80 to about 60:40, can be from about 10:90 to about 50:50, and may be from about 5:95 to about 20:80.