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    • 2. 发明授权
    • Aqueous dispersion, composite powder and organosol of
fluorine-containing polymer
    • 含水聚合物的水分散体,复合粉末和有机溶胶
    • US5164426A
    • 1992-11-17
    • US709155
    • 1991-06-03
    • Tetsuo ShimizuSeitaro Yamaguchi
    • Tetsuo ShimizuSeitaro Yamaguchi
    • C08F259/08C08L51/06
    • C08F259/08C08L51/06Y10S525/902
    • An aqueous dispersion comprising composite colloidal particles having an average particle size of 0.05 to 1.0 micrometer each of which comprises a core made of a copolymer comprising 99-100% by weight of tetrafluoroethylene and 0 to 1% by weight of a fluorine-containing olefin which is copolymerizable with tetrafluoroethylene and a shell made of a polymer having a glass transition temperature of at least 50.degree. C. which comprises(a) 60 to 100% by mole of at least one .alpha.-substituted acrylate of the formula:CH.sub.2 .dbd.CXCOOR.sub.f (I) wherein X is a methyl group, a fluorine atom or a trifluoromethyl group, and R.sub.f is a fluoroalkyl group or a fluoro(alkoxyalkyl) group and(b) 0 to 40% by mole of at least one monomer copolymerizable with said acrylate (I), from which composite fluorine-containing polymer particles having good redispersibility in a liquid medium and improved blending properties with other resins or elastomers are prepared and from which an organosol of the composite fluorine-containing polymer particles is formed.
    • 一种水分散体,其包含平均粒度为0.05-1.0微米的复合胶体颗粒,每一个包含由包含99-100重量%四氟乙烯和0-1重量%含氟烯烃的共聚物制成的芯, 可与四氟乙烯和由玻璃化转变温度至少为50℃的聚合物制成的壳共聚,该壳包含(a)60至100摩尔%的至少一种下式的分子式:CH2 = CXCOORf的α-取代的丙烯酸酯 I)其中X为甲基,氟原子或三氟甲基,Rf为氟烷基或氟(烷氧基烷基)基团,(b)0〜40摩尔%的至少一种可与所述丙烯酸酯共聚的单体 I),其中在液体介质中具有良好的再分散性的复合含氟聚合物颗粒和与其它树脂或弹性体的改进的共混性能被制备,并且从其中复合含氟混合物的有机溶胶 形成聚合物颗粒。