[EN] METHOD OF INCREASING THE DRY STRENGTH OF PAPER PRODUCTS USING CATIONIC DISPERSION POLYMERS<br/>[FR] PROCEDE PERMETTANT DE RENFORCER LA RESISTANCE A SEC DE PRODUITS DE PAPIER AU MOYEN DE POLYMERES CATIONIQUES DE DISPERSION
申请人:NALCO CHEMICAL CO
公开号:WO2001065009A1
公开(公告)日:2001-09-07
This invention is directed to method for improving the dry strength of a paper product using a single cationic dispersion polymer strength additive, wherein the cationic dispersion polymer is prepared by polymerizing in an aqueous solution of a polyvalent anionic salt in the presence of a dispersant: i) a cationic diallyl-N, N-disubstituted ammonium halide monomer of formula (I) wherein R1 and R2 are independently C1-C20 alkyl, aryl or arylalkyl and X is an anionic conterion and ii) an acrylamide monomer of formula (II) wherein R3 and R4 are independently hydrogen, C1-C10 alkyl, aryl or arylalkyl; R5 is hydrogen or methyl and R6 and R7 are independently hydrogen or C1-C10 alkyl.