Polymeric papermaking additive

Details Polymeric papermaking additive Polymeric papermaking additive

1988-03-09

1992-05-19

Page, Thurman K.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

1621574, L08F 2058

Patent

active

051150654

ABSTRACT:
A papermaking additive useful for papermaking in a neutral to alkaline pH region, which comprises as an active component a water-soluble copolymer comprising as constituent monomers (a) 0.1 to 20 mole % of a specific bisquaternary ammonium (meth)acrylamide, (b) 0 to 20 mole % of a specific acrylamide or acrylic ester derivative such as an aminoalkyl (meth)acrylamide or an aminoalkyl (meth)acrylate, or a salt thereof, (c) 50 to 99.9 mole % of acrylamide and/or methacrylamide, and (d) 0 to 10 mole % of an alpha,beta-unsaturated carboxylic acid and/or a salt thereof. The additive increases paper strength and filler retention and size retention.

REFERENCES:
patent: 3323979 (1967-06-01), Foster et al.
patent: 3666810 (1972-05-01), Hoke

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