| 摘要 |
This invention relates to use of copolymers which are obtained through copolymerization, in the presence of a radical-polymerization initiator, of monomeric mixtures comprising:macromonomers obtained by (co)polymerizing, in the presence of a metal complex which is a catalytic chain transfer agent or an addition-cleavage-type chain transfer agent, and optionally a radical-polymerization initiator, at least one polymerizable monomer selected from methacrylic acid esters and styrene and if necessary methacrylic acid, or the macromonomers into which polymerizable unsaturated groups are further introduced;polymerizable unsaturated monomers containing at least one ionic functional group selected from amino, quaternary ammonium salt and sulfonic acid groups;polyoxyalkylene chain-containing nonionic polymerizable unsaturated monomers; andother ethylenically unsaturated monomers (D); and also such copolymers into which long chain alkyl groups are further introduced, as pigment-dispersing resins to be used in water-based paints.
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