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High molecular weight and high cationic chargeglyoxalatedpolyacrylamide copolymers, and their methods of manufacture and use
High molecular weight and high cationic chargeglyoxalatedpolyacrylamide copolymers, and their methods of manufacture and use
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机译:高分子量和高阳离子电荷的乙二醛化聚丙烯酰胺共聚物及其制造和使用方法
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摘要
A cellulose reactive glyoxalated copolymer composition and methods of producing and using the glyoxalated copolymer composition to, for instance, strengthen paper or board are discussed. A glyoxalated copolymer composition includes an aqueous medium containing a glyoxalated copolymer, wherein the glyoxalated copolymer is obtained by reaction in an aqueous reaction medium of a dry weight ratio of glyoxalxationic copolymer. The cationic copolymer can have a weight average molecular weight of about 120,000 to about 1 million Daltons, the cationic copolymer can include diallyldimethylammonium halide monomer and acrylamide monomer, and a ratio a ratio of the weight average molecular weight of the cationic copolymer before glyoxalation to weight % of diallyldimethylammonium halide monomer making up the cationic copolymer before glyoxalation can be equal to or greater than 4,000 or range from 4,000 to 40,000 Daltons/weight %.
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