Patent ID: 8070914

Claim:
A composition comprising a wet-strength enhancing amount of (a) a functional promoter comprising a water-soluble anionic polymer having a molecular weight of at least about 50,000 daltons and a molecular weight charge index value of at least about 10,000, (b) a cationic surfactant component present in an amount of less than about 50 wt %, based on the combined weight of the water-soluble: anionic polymer and the cationic surfactant component; and (c) a cationic strength component, wherein when the composition treats a fibrous substrate, the treated fibrous substrate exhibits (i) a ratio of wet tensile strength to dry tensile strength ranging from about 1:5 to about 1:2 and (ii) an increase in a ratio of wet tensile strength to dry tensile strength of at least about 10%, as compared to when the fibrous substrate is treated with the functional promoter and without a surfactant.