| 摘要 |
Polymer dispersions characterized in that they contain N-methylol(meth)acrylamide groups, comprising 30-65% by weight of methylmethacrylate, 10-17% by weight of ethylacrylate, 10-30% by weight of butylmethacrylate, 5-20% by weight of styrene, 3-10% by weight of N-methylol(meth)acrylamide, and containing as a coalescing agent from about 5 to 15% by weight, based on the dispersion, of a blend comprising 20-65% by weight of a high boiling paint solvent such as 2,2,4-trimethylpentane-1,5-diol-monotrimethylacetate and 80-35% by weight of ethylene glycol monoethyletheracetate, and/or ethylene glycol monobutyletheracetate, optionally in conjunction with basic varnishes based on cationic water-soluble acrylic copolymers, are described. The dispersions when used in coating compositions for coating wood surfaces provide a coating on wood having good mar resistance, hardness, and flexibility, while accentuating the wood grain and color.
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