Use of hydrophilic dispersion polymers for coated broke treatmen

Details Use of hydrophilic dispersion polymers for coated broke treatmen Use of hydrophilic dispersion polymers for coated broke treatmen

1996-07-22

1999-04-06

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

1621683, 162191, D21H 1745

Patent

active

058913041

ABSTRACT:
A process for treating recycled coated broke which has been re-pulped to a slurry for the purpose of recycling the coated broke as cellulose fiber to the paper machine by the addition of a water-soluble polymer dispersion is claimed. The water-soluble polymer is formed by polymerizing a water-soluble mixture which comprises: (a) a cationic monomer represented by the following general formula (I): ##STR1## wherein R.sub.1 is H or CH.sub.3 ; each of R.sub.2 and R.sub.3 is an alkyl group having 1 to 2 carbon atoms; R.sub.4 is H or an alkyl group of 1 to 2 carbon atoms; A' is an oxygen atom or NH; B' is an alkylene group of 2 to 4 carbon atoms or a hydroxypropylene group; and X.sup.- is an anionic counterion; and (b) a second monomer represented by (meth)acrylamide (in an aqueous solution of a polyvalent anionic salt), wherein the polymerization is carried out in the presence of either an organic high-molecular weight multivalent cation comprising a water-soluble polymer containing at least one monomer of formula (I) and/or poly diallyl dimethyl ammonium chloride (DADMAC).

REFERENCES:
patent: 4507422 (1985-03-01), Farrar et al.
patent: 4554307 (1985-11-01), Farrar et al.
patent: 5131982 (1992-07-01), St. John
patent: 5183576 (1993-02-01), Wood et al.
patent: 5254221 (1993-10-01), Lowry et al.
patent: 5466338 (1995-11-01), Pearson
patent: 5643460 (1997-07-01), Marble et al.

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