| 摘要 |
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): 2 and R3 is an alkyl group having 1 to 2 carbon atoms; R4 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- 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).
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