Catonic acrylamide polymers and the applications of these polyme

Details Catonic acrylamide polymers and the applications of these polyme Catonic acrylamide polymers and the applications of these polyme

1993-06-28

1994-03-08

Lipman, Bernard

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

Synthetic resins

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

5253292, 5253294, 525355, 525383, C08F 820

Patent

active

052928217

ABSTRACT:
This invention provides cationic acrylamide polymers which are highly effective as paper strength agents, drainage agents and suspension flocculants, and which do not show much temporal deterioration; it also provides a method of manufacturing said polymers wherein the manufacturing equipment is compact and can be installed on site, and the cationicity of the polymers can be modified in a short time.
This invention comprises a method of manufacturing cationic acrylamide polymers by reaction, with a hypohalogenite, of a (meth)acrylamide homopolymer, a copolymer of (meth)acrylamide and acrylonitrile, a copolymer of (meth)acrylamide and, N,N-dimethylacrylamide, in a high temperature range of 50.degree.-110.degree. C. for a short time; the polymers manufactured by said process; and paper strength agents, drainage agents and flocculants having these polymers as their principal constituent.

REFERENCES:
patent: 3366639 (1968-01-01), Haefele
patent: 3929744 (1975-12-01), Wright et al.
patent: 4110520 (1978-08-01), Miyajima
patent: 4785055 (1988-11-01), Dexter et al.
patent: 4789703 (1988-12-01), Fabris et al.
Kobunshi Ronbunshu, vol. 33, No. 6, pp. 309-316 Jun. 1976.

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