Cationic polymeric composition for imparting wet and dry strengt

Details Cationic polymeric composition for imparting wet and dry strengt Cationic polymeric composition for imparting wet and dry strengt

1979-05-10

1980-11-11

Tillman, Murray

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

162164EP, 162167, 162168NA, 525158, 525185, 525187, 260 294UA, D21H 352, C08L 3326

Patent

active

042334110

ABSTRACT:
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.

REFERENCES:
patent: 3556932 (1971-09-01), Coscia et al.
patent: 3703563 (1972-11-01), Lipowski et al.
patent: 4002588 (1977-01-01), Strazdins

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