| 摘要 |
Crosslinked, preferably acrylic, preferably melamine crosslinked, polymer particles formed by reactions comprising free radical addition polymerization of: (a) between about 0.5 and about 20 weight percent each of first and second monomers, each bearing functionally capable of crosslinking reaction with the other and additionally wherein the first monomer is ethylenically unsaturated and the second monomer bears multiple crosslinking functionality and no ethylenic unsaturation, (b) between about 60 and about 99 weight percent of at least one other monoethylenically unsaturated monomer; in the presence of (I) an organic liquid which is a solvent for the polymerizable monomers, but a non-solvent for the resultant polymer, and (II) polymeric dispersion stabilizer wherein the precursor of the first segment of the stabilizer comprises a long chain hydrocarbon molecule having only one reactive group per molecule, preferably being a carboxyl group.
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