Process for preparing colloidal suspensions of organopolysiloxanes
    42.
    发明授权
    Process for preparing colloidal suspensions of organopolysiloxanes 失效
    制备有机聚硅氧烷的胶体悬浮液的方法

    公开(公告)号:US4857582A

    公开(公告)日:1989-08-15

    申请号:US195567

    申请日:1988-05-18

    IPC分类号: C08L83/04 C08G77/06 C08J3/03

    摘要: Colloidal suspensions of organopolysiloxanes are prepared by mixing an organosilicon compound selected from the group consisting of mixtures of alkoxysilanes and/or partial hydrolysates thereof and an organo(poly)siloxane which is optionally free of alkoxy groups and contains a maximum of 8 siloxane units, which is mixed with at least one alkoxysilane and/or a partial hydrolysate thereof, with water in the presence of an emulsifier, at a maximum rate of 5 moles of organosilicon compound per hour per liter of water, in which the organosilicon compound and the water is fed continuously, but separately from one another, into a reactor, in which at least one of the two substances contains an emulsifier, while the alkanol is being continuously removed by distillation from the aqueous suspension continuously emerging from the reactor. The aqueous suspension from which the alkanol has been removed by distillation is, if desired, recycled back into the reactor. A tubular reactor is preferably employed in which the water is added continuously at, or near the upper end of the tubular reactor and the organosilicon compound is added via several inlet points arranged along the longitudinal axis of the tubular reactor.

    摘要翻译: 有机聚硅氧烷的胶态悬浮液是通过混合选自烷氧基硅烷和/或其部分水解产物的混合物的有机硅化合物和任选不含烷氧基并且含有最多8个硅氧烷单元的有机(多)硅氧烷制备的, 与至少一种烷氧基硅烷和/或其部分水解产物在乳化剂存在下与水混合,其最大速率为每小时每升水5摩尔有机硅化合物,其中有机硅化合物和水为 连续地但彼此分开地进入反应器,其中两种物质中的至少一种含有乳化剂,同时通过蒸馏从连续从反应器中出来的水性悬浮液连续除去链烷醇。 通过蒸馏除去链烷醇的水性悬浮液如果需要,则循环回到反应器中。 优选使用管式反应器,其中水在管式反应器的上端处或附近连续加入,并且有机硅化合物通过沿着管式反应器的纵向轴线布置的几个入口点加入。

    Process for preparing organopolysiloxanes and copolymers thereof
    43.
    发明授权
    Process for preparing organopolysiloxanes and copolymers thereof 失效
    制备有机聚硅氧烷的方法及其共聚物

    公开(公告)号:US4413104A

    公开(公告)日:1983-11-01

    申请号:US332140

    申请日:1981-12-18

    摘要: A process for preparing organopolysiloxanes having SiC-bonded organofunctional groups, which comprises reacting an organopolysiloxane containing SiC-bonded hydroxyl and/or alkoxy groups and having an average of about 0.85 to 1.8 SiC-bonded monovalent hydrocarbon radicals or halogenated monovalent hydrocarbon radicals for each Si atom, with an organosilicon compound containing alkoxy groups and/or siloxane oxygen groups and at least one SiC-bonded organofunctional radical per molecule in the presence of an organic solvent and a basic catalyst.The resultant organopolysiloxanes having SiC-bonded organofunctional groups may, for example, be used for preparing modified polymers by copolymerizing the organopolysiloxanes with a monomer containing an aliphatic double bond, such as styrene or hydroxyethyl methacrylate, or by reacting the organopolysiloxanes with an additional polymer such as an epoxy resin. When a monomer, containing an aliphatic double bond is used in the copolymerization, the resultant modified polymers may be used to manufacture hard contact lenses.

    摘要翻译: 一种制备具有SiC键合的有机官能团的有机聚硅氧烷的方法,该方法包括使含有SiC键合的羟基和/或烷氧基的有机聚硅氧烷与每个Si平均约0.85至1.8的SiC键合的一价烃基或卤代一价烃基反应 原子与含有烷氧基和/或硅氧烷氧基的有机硅化合物和在有机溶剂和碱性催化剂存在下每分子至少一个与SiC结合的有机官能团。 具有SiC键合的有机官能团的所得有机聚硅氧烷可以例如通过使有机聚硅氧烷与含有脂族双键的单体如苯乙烯或甲基丙烯酸羟乙酯共聚而制备改性聚合物,或通过使有机聚硅氧烷与另外的聚合物 作为环氧树脂。 当在共聚中使用含有脂肪族双键的单体时,所得到的改性聚合物可用于制造硬质隐形眼镜。

    Thermosetting compositions which can be cured to form molded objects or
coatings
    45.
    发明授权
    Thermosetting compositions which can be cured to form molded objects or coatings 失效
    可以固化以形成模制物体或涂层的热固性组合物

    公开(公告)号:US4102970A

    公开(公告)日:1978-07-25

    申请号:US780576

    申请日:1977-03-23

    IPC分类号: C08L83/04 B28B3/20

    CPC分类号: C08L83/04 C08G77/16 C08G77/70

    摘要: Thermosetting compositions which can be used to form molded articles and coatings comprising (1) organopolysiloxanes having at least 40 mol percent monoorganosiloxane units and at least 0.1 percent by weight of condensable groups, (2) fillers and/or reinforcing agents, (3) a condensation catalyst, if desired, and (4) diorganopolysiloxanes having a viscosity of at least 30 cSt at 25.degree. C. in which the diorganopolysiloxanes (4) are present in an amount of from about 15 to 30 percent by weight based on the organopolysiloxanes (1), and the mixture of organopolysiloxanes (1) and (4) forms two phases.

    摘要翻译: 可用于形成模制品和涂料的热固组合物,其包含(1)具有至少40摩尔%单有机硅氧烷单元和至少0.1重量%可冷凝基团的有机聚硅氧烷,(2)填料和/或增强剂,(3) 如果需要,缩合催化剂和(4)在25℃下粘度至少为30cSt的二有机聚硅氧烷,其中二有机聚硅氧烷(4)的存在量为基于有机聚硅氧烷的约15至30重量% 1),有机聚硅氧烷(1)和(4)的混合物形成两相。

    Organosilicon compounds containing alkenyl groups
    46.
    发明授权
    Organosilicon compounds containing alkenyl groups 失效
    含有烯基的有机硅化合物

    公开(公告)号:US06252101B1

    公开(公告)日:2001-06-26

    申请号:US09261823

    申请日:1999-03-03

    IPC分类号: C07F708

    摘要: The invention describes new organosilicon compounds containing alkenyl groups, comprising units of the formula A a ⁢ R b ⁡ ( R 1 ⁢ O ) c ⁢ SiO 4 - ( a + b + c ) 2 , ( I ) where R are identical or different and are each a monovalent hydrocarbon radical which is free of aliphatic carbon-carbon multiple bonds, has from 1 to 20 carbon atom(s) per radical and may contain from 1 to 4 oxygen atom(s), R1 are identical or different and are each a monovalent hydrocarbon radical which is free of aliphatic carbon-carbon multiple bonds and has from 1 to 8 carbon atom(s) per radical, a is 0 or 1, b is 0, 1, 2 or 3, c is 0, 1, 2 or 3, preferably 0, where the sum a+b+c≦3, A is a radical of the formula —(R2)d—Y(—CH═CHR3)2 where R2 is a divalent hydrocarbon radical which is free of aliphatic carbon-carbon multiple bonds and has from 1 to 6 carbon atom(s), R3 are identical or different and are each a hydrogen atom or are as defined for R, Y is a trivalent hydrocarbon radical which has from 2 to 20 carbon atoms and may contain from 1 to 4 oxygen atom(s) and d is 0 or 1, with the proviso that the organosilicon compounds have at least two units of the formula (I) and at least one radical A per molecule.

    摘要翻译: 本发明描述了含有烯基的新的有机硅化合物,其包含式R的单元相同或不同,并且各自为不含脂族碳 - 碳多键的单价烃基,每个基团具有1-20个碳原子 并且可以含有1至4个氧原子,R 1相同或不同,并且各自为不含脂族碳 - 碳多重键并且每个基团具有1至8个碳原子的单价烃基, 是0或1,b为0,1,2或3,c为0,1,2或3,优选为0,其中和a + b + c = 3,A为式R 2的基团为 不含脂族碳 - 碳多重键且具有1至6个碳原子的二价烃基,R 3相同或不同,各自为氢原子或如对R所定义,Y为三价烃基,其中 具有2至20个碳原子并且可以含有1至4个氧原子,d为0或1,条件是 有机硅化合物具有至少两个式(I)单元和每个分子至少一个基团A.

    Organosilicon compounds containing furanyl groups
    49.
    发明授权
    Organosilicon compounds containing furanyl groups 失效
    含有呋喃基的有机硅化合物

    公开(公告)号:US5693734A

    公开(公告)日:1997-12-02

    申请号:US495009

    申请日:1995-06-27

    摘要: Organosilicon compounds containing furanyl groups which contain units of the formula ##EQU1## in which R is identical or different and is a hydrogen atom or monovalent, SiC-bonded, aliphatically saturated, optionally substituted hydrocarbon radical, which can be interrupted by oxygen atoms, R.sup.1 is identical or different and is an optionally substituted hydrocarbon radical having 1 to 8 carbon atoms, which can be interrupted by 1 to 3 oxygen atoms. A is identical or different and is an SiC-bonded furanyl radical of the formula ##STR1## where R.sup.2 has the meaning given above for the radical R and R.sup.3 is a divalent hydrocarbon radical having 2 to 30 carbon atoms, which can contain one or more groups, chosen from the group consisting of ##STR2## a is 0, 1, 2 or 3, b is 0, 1 or 2 and c is 0, 1 or 2, with the proviso that the sum a+b+c is less than or equal to 3 and the organosilicon compound contains at least one radical A per molecule.

    摘要翻译: 含有呋喃基的有机硅化合物,其含有式(I)的单元,其中R相同或不同,并且是氢原子或可被氧中断的一价,SiC键合,脂族饱和,任选取代的烃基 原子,R 1相同或不同,并且是可以被1至3个氧原子间隔的具有1至8个碳原子的任选取代的烃基。 A是相同或不同的,并且是具有下式(II)的SiC键合的呋喃基,其中R2具有上述对于基团R的含义,且R 3是具有2至30个碳原子的二价烃基,其可以含有 选自由 a组成的组中的一个或多个基团是0,1,2或3,b是0,1或2,c是0,1或2,条件是和a + b + c小于或等于3,有机硅化合物每分子含有至少一个基团A.

    Crosslinkable compositions and their use for the production of non-stick
coatings
    50.
    发明授权
    Crosslinkable compositions and their use for the production of non-stick coatings 失效
    可交联组合物及其用于生产不粘涂料的用途

    公开(公告)号:US5525696A

    公开(公告)日:1996-06-11

    申请号:US327739

    申请日:1994-10-24

    摘要: Compositions which comprise(A) a polymeric organosilicon compound having 1 to 6 Si-bonded hydrogen atoms per molecule,(B) a polymeric organosilicon compound having at least two alkenyl groups per molecule and a viscosity of not more than 100 mm.sup.2 /s,(C) a polymeric organosilicon compound having on average at least 10 Si-bonded hydrogen atoms per molecule,(D) a catalyst and, optionally(E) an inhibitor,with the proviso thatthe molar ratio of all the Si-bonded hydrogen atoms to all the SiC-bonded alkenyl groups in the composition is on average less than 1,the composition comprises (B) in an amount such that the composition comprises on average at least 1.1 alkenyl radicals of (B) per Si-bonded hydrogen atom of (A)and the content of Si-bonded hydrogen atoms of (C) is 5% to 50%, based on the number of all the Si-bonded hydrogen atoms present.

    摘要翻译: 包含(A)每分子具有1至6个Si键合的氢原子的聚合物有机硅化合物的组合物,(B)每分子具有至少两个烯基并且粘度不超过100mm 2 / s的聚合物有机硅化合物( C)每分子平均具有至少10个Si键合氢原子的聚合物有机硅化合物,(D)催化剂和任选的(E)抑制剂,条件是所有Si键合的氢原子与 组合物中所有SiC键合的烯基平均小于1,组合物包含(B),其量使得组合物平均包含(B)的至少1.1个烯基(每个Si键合的氢原子的(B))( A),(C)的Si键合氢原子的含量相对于存在的所有Si键合氢原子的数量为5〜50%。