Cationically modified paper fiber-treating polyacrylamide...

Details Cationically modified paper fiber-treating polyacrylamide... Cationically modified paper fiber-treating polyacrylamide...

C - Chemistry, Metallurgy

08

K

400/5052

C08K 5/07 (2006.01) C08L 33/26 (2006.01) D21H 17/35 (2006.01) D21H 17/37 (2006.01) D21H 17/45 (2006.01) D21H 17/54 (2006.01) D21H 21/18 (2006.01) D21H 21/20 (2006.01)

Patent

CA 1148682

ABSTRACT OF THE DISCLOSURE A blend which contains homopolymers useful for omparting 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 ammonis condensation polymer, and a polyvinyl benzyl trimethyl ammoniom chloride polymer. A buffer such as tetrasodium pyro- phosphate may be used. A dosage of .2 - 5% by weight (preferred .5 -2% by weight) based on the dry weight of fiber is utilized.

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