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    • 1. 发明授权
    • Method for the preparation of an organosiloxane oligomer and a novel
organosiloxane oligomer thereby
    • 由此制备有机硅氧烷低聚物和新型有机硅氧烷低聚物的方法
    • US4727172A
    • 1988-02-23
    • US905576
    • 1986-09-09
    • Akira YamamotoMinoru TakamizawaToshinobu IshiharaTadao Kurosaki
    • Akira YamamotoMinoru TakamizawaToshinobu IshiharaTadao Kurosaki
    • C07F7/08
    • C07F7/0852C07F7/0874
    • An efficient method is proposed for the preparation of an organosiloxane oligomer represented by the general formula YSi(R.sup.1).sub.n (--O--SiR.sub.3).sub.3-n, in which each of the groups denoted by R and R.sup.1 is a halogen-substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, Y is a hydrogen atom or a monovalent group selected from methyl, phenyl, vinyl, chloromethyl and 3-(meth)acryloxypropyl groups and n is zero, 1 or 2, by the reaction of an organosilicon halomagnesium salt of the formula R.sub.3 Si--O--MgX, in which X is a halogen atom, and an organosilane compound of the general formula YSi(R.sup.1).sub.n (Z).sub.3-n, in which Z is a halogen atom or a lower alkoxy group. In particular, tetrasiloxane compounds represented by the general formula Y.sup.1 Si[--O--Si(CH.sub.3).sub.2 (CH.sub.2 CH.sub.2 CF.sub.3)].sub.3, in which Y.sup.1 is a hydrogen atom, chloromethyl group or 3-methacryloxypropyl group, are each a novel compound not known in the prior art.
    • 提出了制备由通式YSi(R1)n(-O-SiR 3)3-n表示的有机硅氧烷低聚物的有效方法,其中由R和R 1表示的每个基团是卤素取代或未取代的 具有1至8个碳原子的一价烃基,Y是氢原子或选自甲基,苯基,乙烯基,氯甲基和3-(甲基)丙烯酰氧基丙基的一价基团,并且n为0,1或2,通过 其中X为卤素原子的式R3Si-O-MgX的有机硅卤镁盐和通式YSi(R1)n(Z)3-n的有机硅烷化合物,其中Z为卤素原子或低级 烷氧基。 特别地,由通式Y1Si [-O-Si(CH3)2(CH2CH2CF3)] 3表示的四硅氧烷化合物,其中Y 1为氢原子,氯甲基或3-甲基丙烯酰氧基丙基,均为未知的新化合物 现有技术