Aqueous dispersion of cationic polymer

Details Aqueous dispersion of cationic polymer Aqueous dispersion of cationic polymer

1988-08-26

1990-04-24

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621683, D21H 336

Patent

active

049197576

ABSTRACT:
An aqueous dispersion of a cationic polymer is disclosed, which is obtained by reacting an ethylene copolymer comprising from 40 to 80% by weight of ethylene and from 20 to 60% by weight of at least one aminoalkyl acrylamide comonomer represented by formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group; R.sub.2 and R.sub.3 each represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms; and n represents an integer of from 2 to 4, and having a melt index, as measured in accordance with JIS K-6760, of from 10 to 1,000 g/10 min with hydrochloric acid in water to form a quaternary salt and subsequently reacting the resulting quaternary salt with an epihalohydrin compound through addition reaction. The aqueous dispersion provides a coating film having an improved electrical conductivity or produces effects to simultaneously improve degree of sizing and wet strength of paper.

REFERENCES:
patent: 4060679 (1977-11-01), Naarmann et al.
patent: 4298639 (1981-11-01), Van Eenam
patent: 4416729 (1983-11-01), Killat et al.

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