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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
    • 9. 发明授权
    • Pervaporation method for separating liquids in mixture
    • 用于分离混合物中液体的渗透蒸发法
    • US4728431A
    • 1988-03-01
    • US771985
    • 1985-09-03
    • Shigehiro NaguraMinoru TakamizawaAkira Yamamoto
    • Shigehiro NaguraMinoru TakamizawaAkira Yamamoto
    • B01D61/36B01D71/44D01F6/00D01F6/26B01D13/00
    • B01D61/362B01D63/02B01D71/44
    • The efficiency of the pervaporation method for the separation or enrichment of liquids in mixture, e.g. water and ethyl alcohol, can be greatly improved when the partitioning membrane is made of a polymeric composition comprising a specific organosilyl-substituted polyenic polymer composed of the monomeric moieties represented by the general formula ##STR1## in which R.sup.1 is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms and the groups denoted by R are each independently a hydrogen atom, a monovalent hydrocarbon group having 1 to 8 carbon atoms or a silicon-containing organic group such as those represented by the general formula --CH.sub.2 --SiMe.sub.2 R.sup.2, Me being a methyl group and R.sup.2 being a lower alkyl group having 1 to 4 carbon atoms. The performance and durability of the membrane can be further improved when the polymeric composition is a polymer blend of the above described polyenic polymer and a poly(trimethyl vinyl silane).
    • 用于分离或富集混合物中的液体的渗透蒸发方法的效率,例如 当分隔膜由包含由通式“IMAGE”表示的单体部分组成的特定有机甲硅烷基取代的多烯聚合物的聚合物组合物中可以大大改善,其中R 1是氢原子或烷基 具有1至4个碳原子的基团和由R表示的基团各自独立地为氢原子,具有1至8个碳原子的一价烃基或含硅的有机基团,例如由通式-CH 2 -SiMe 2 R 2表示的基团, Me为甲基,R2为碳原子数1〜4的低级烷基。 当聚合物组合物是上述多元聚合物与聚(三甲基乙烯基硅烷)的聚合物共混物时,可以进一步改善膜的性能和耐久性。