ANIONIC FUNCTIONAL PROMOTER AND CHARGE CONTROL AGENT WITH IMPROVED WET TO DRY TENSILE STRENGTH RATIO

摘要

The invention relates to a composition comprising (a) a functional promotercomprising a water-soluble anionic polymer having a molecular weight of atleast about 50,000 daltons and a molecular weight charge index value of atleast about 10,000; (b) a cationic surfactant component; such that when thecomposition treats a fibrous substrate, in conjunction with a cationicstrength agent, the treated fibrous substrate exhibits (i) a ratio of wettensile strength to dry tensile strength ranging from about 1:5 to about 1:2and (ii) an increase in a ratio of wet tensile strength to dry tensilestrength of at least about 10%, as compared to when the fibrous substrate istreated with the functional promoter and without a surfactant. The inventionalso relates to a paper product made with such a system, and method forimparting wet strength to a paper product with the functional promoter.