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    • 70. 发明授权
    • Vinyl copolymer, method for making, and room temperature curing resin
composition
    • 乙烯基共聚物,制备方法和室温固化树脂组合物
    • US5516868A
    • 1996-05-14
    • US497052
    • 1995-06-30
    • Toshio YamazakiShinichi MoriokaNobuyuki SyzukiIchinobe Shoji
    • Toshio YamazakiShinichi MoriokaNobuyuki SyzukiIchinobe Shoji
    • C08F230/08C08G77/08
    • C08F230/08
    • A vinyl copolymer is provided comprising a silanol group-containing (meth)acryl siloxane unit of formula (1): ##STR1## wherein R.sup.1 is hydrogen or methyl, R.sup.2, R.sup.3, and R.sup.4 are independently a monovalent C.sub.1 -C.sub.8 hydrocarbon group or a siloxy group, R.sup.5 is a monovalent C.sub.1 -C.sub.8 hydrocarbon group, n=1 to 12, and a=0 or 1. The vinyl copolymer is prepared by copolymerizing a polymerizable vinyl monomer with a silanol group-containing (meth)acryl siloxane in the presence of a radical initiator or by emulsion polymerizing a polymerizable vinyl monomer with a silanol group-containing (meth)acryl siloxane in an aqueous medium in the presence of a surfactant and a polymerization initiator. The copolymer is blended with a condensation catalyst to form a room temperature curable resin composition which crosslinks in the presence of moisture into a cured coating having weatherability, flexibility, and adherence.
    • 提供了包含式(1)的含硅烷醇基的(甲基)丙烯酸硅氧烷单元的乙烯基共聚物:其中R1是氢或甲基,R2,R3和R4独立地是一价C1-C8烃 基团或甲硅烷氧基,R5是单价C1-C8烃基,n = 1〜12,a = 0或1.乙烯基共聚物通过将可聚合乙烯基单体与含硅烷醇基的(甲基)丙烯酸 在自由基引发剂的存在下,通过在水性介质中,在表面活性剂和聚合引发剂的存在下,使可聚合的乙烯基单体与含硅烷醇基的(甲基)丙烯酸硅氧烷乳液聚合。 将共聚物与缩合催化剂混合以形成室温可固化树脂组合物,其在水分存在下交联成具有耐候性,柔韧性和粘附性的固化涂层。