| 摘要 |
40-50% by weight finely divided, stable, aqueous dispersions (particle size 0.1-0.15 mu ) of copolymers of copolymerized units of 20-48% by weight of acrylonitrile which may be partially substituted by styrene, 47,5-70,5% by weight of n-butyl acrylate, 3,5-4,5% by weight of methacrylic acid, which may be substituted up to 50% by acrylic acid and 0-5% by weight of N-methoxymethyl metharylamide. The dispersions are prepared by a special process characterized by a critical combination of known process steps. The dispersions are eminently suitable for use as binders in unpigmented or pigmented aqueous dispersion paints for metal, wood, plastics and mineral substrates.
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