Patent ID: 8900412

Claim:
A composition for improved dry strength of formed cellulosic substrates comprising a) a cationic polymer prepared from 0.01 to 100 molar percent of either one or multiple cationic monomer, wherein the cationic monomer is selected from the group consisting of N,N-dimethylaminopropyl(meth)acrylamide, allylamine, dimethylaminoethyl(meth)acrylate, diethylaminoethyl(meth)acrylate, diethylaminopropyl(meth)acrylate, acrylamidopropyltrimethylammonium chloride, trimethylammonium propyl methacrylamide chloride, dimethylallylamine, diallylamine, vinylamine, and optionally comonomers selected from the group consisting of acrylamide, methacrylamide, N-methyl(meth)acrylamide, N-ethyl(meth)acrylamide, N,N-dimethyl(meth)acrylamide, N-isopropyl(meth)-acrylamide, and combinations thereof, component b) starch, either native or derivatized, and optionally, component c) a viscosity modifying chemical; wherein the viscosity modifying chemical is selected from fatty acids, oxyethylated alkylphenols, alkyl amine oxides, alkyl sulfosuccinates, lignosulfonate, alkyl sulfates and salts thereof, wherein the composition is a solution free of precipitates, coagulates, and gels; and wherein the Brookfield viscosity of the composition is less than 800 cPs at a temperature of 60° C. using a #2 spindle, and wherein the composition is applied to the surface of the formed cellulosic substrate.