초록 ▼

A blend which contains homopolymers useful for imparting wet and dry strength to pulp and paper fibers which comprises a major amount of non-ionic polyacrylamide, together with glyoxal to impart crosslinking and a cationic regulator selected from the group consisting of a low molecular weight dimeth

A blend which contains homopolymers useful for imparting wet and dry strength to pulp and paper fibers which comprises a major amount of non-ionic polyacrylamide, together with glyoxal to impart crosslinking and a cationic regulator selected from the group consisting of a low molecular weight dimethyl amine epichlorohydrin copolymer, a low molecular weight ethylene dichloride ammonia condensation polymer, and a polyvinyl benzyl trimethyl ammonium chloride polymer. A buffer such as tetrasodium pyrophosphate may be used. A dosage of 0.2-5% by weight (preferred 0.5-2% by weight) based on the dry weight of fiber is utilized.

대표청구항 ▼

A composition for imparting wet and dry strength to paper fiber which comprises a blend of (1) polyacrylamide 40-95% by weight; (2) a cationic regulator selected from the group consisting of a low molecular weight dimethyl amine epichlorohydrin copolymer, a low molecular weight ethylene dichloride a

A composition for imparting wet and dry strength to paper fiber which comprises a blend of (1) polyacrylamide 40-95% by weight; (2) a cationic regulator selected from the group consisting of a low molecular weight dimethyl amine epichlorohydrin copolymer, a low molecular weight ethylene dichloride ammonia condensation polymer, and polyvinyl benzyl trimethyl ammonium chloride polymer in the amount of 4-14% by weight; and (3) glyoxal 2-50% by weight, and which is utilized in a dosage of 0.2-5% based on dry weight of fiber.