Silicone rubber composition with improved fluidity
    1.
    发明授权
    Silicone rubber composition with improved fluidity 失效
    硅橡胶组合物具有改善的流动性

    公开(公告)号:US5352724A

    公开(公告)日:1994-10-04

    申请号:US91298

    申请日:1993-07-15

    IPC分类号: C08L83/04 C08K5/56

    CPC分类号: C08L83/04 C08G77/12 C08G77/20

    摘要: An addition-curable type silicone rubber composition comprising (A) an organopolysiloxane having an alkenyl group such as vinyl in its molecule, (B) an organohydrogenpolysiloxane having at least two SiH groups in its molecule, (C) a platinum catalyst such as platinum, chloroplatinic acid, etc., (D) an inorganic filler, (E) an organic titanium compound such as tetraethyl titanate, and (F) water. The composition exhibits good fluidity, and behaves like a Newtonian fluid, even where carbon black or a silica or alumina having an average particle diameter of 1 .mu.m or above is incorporated in the composition as an inorganic filler for improving such characteristics as heat resistance, thermal conductivity, etc.

    摘要翻译: 一种可加成固化型硅橡胶组合物,其包含(A)分子中具有乙烯基等烯基的有机聚硅氧烷,(B)分子中具有至少两个SiH基的有机氢聚硅氧烷,(C)铂催化剂, (D)无机填料,(E)有机钛化合物如钛酸四乙酯和(F)水。 该组合物表现出良好的流动性,并且表现为牛顿流体,即使将炭黑或平均粒径为1μm以上的二氧化硅或氧化铝作为无机填料掺入组合物中,以改善耐热性, 导热系数等

    Gel-forming silicone composition
    2.
    发明授权
    Gel-forming silicone composition 失效
    凝胶形成硅酮组合物

    公开(公告)号:US5432280A

    公开(公告)日:1995-07-11

    申请号:US85032

    申请日:1993-07-02

    IPC分类号: C08L83/04 C08K5/54

    CPC分类号: C08L83/04 C08G77/12 C08G77/20

    摘要: A gel-forming silicone composition comprising, compounded in a gel-forming base composition, a silane compound having the following general formula (1) or (2): ##STR1## wherein R.sup.1 is an alkyl or aryl group, R.sup.2 is an alkyl or alkoxyalkyl group, R.sup.3 and R.sup.4 are each a hydrogen atom, a methyl group or an ethyl group, R.sup.5 is an alkyl group or an ester linkage-containing group, and a, b and n are each an integer from 0 to 2. The composition is capable of forming, under mild conditions, a silicone gel which exhibits good adherence to a variety of substrates.

    摘要翻译: 一种凝胶形成硅氧烷组合物,其包含在凝胶形成基础组合物中配混的具有以下通式(1)或(2)的硅烷化合物:(1)(R5)bSi(OR2)4-b( 2)其中R1是烷基或芳基,R2是烷基或烷氧基烷基,R3和R4分别是氢原子,甲基或乙基,R5是烷基或含酯键的基团,和 a,b和n各自为0至2的整数。该组合物能够在温和条件下形成对多种底物具有良好粘附性的硅凝胶。

    Fluorosilicone composition and its gellike cured product
    4.
    发明授权
    Fluorosilicone composition and its gellike cured product 失效
    氟硅酮组合物及其胶凝固化产物

    公开(公告)号:US5292848A

    公开(公告)日:1994-03-08

    申请号:US964946

    申请日:1992-10-22

    CPC分类号: C08L83/08 C08L83/12

    摘要: The present fluorosilicone composition is an addition reaction curable composition that uses, as an alkenyl group-containing organopolysiloxane, a fluorine-containing organopolysiloxane represented by the following general formula (1): ##STR1## wherein R represents a vinyl group, R.sup.1 represents an alkyl group or a phenyl group, R.sup.2 represents a group represented by the following formula (2): ##STR2## in which p is an integer of 2 to 8 and q is an integer of 1 to 10, and n and m are each a positive integer. This composition can form a gellike cured product particularly excellent in acid resistance.

    摘要翻译: 本发明的氟硅酮组合物是使用由以下通式(1)表示的含氟有机聚硅氧烷作为含烯基的有机聚硅氧烷的加成反应固化性组合物:(*化学结构*)(1)其中R表示乙烯基 基团,R 1表示烷基或苯基,R 2表示由下式(2)表示的基团:(*化学结构*)(2)其中p为2〜8的整数,q为 1〜10,n和m各自为正整数。 该组合物可以形成特别优异的耐酸性的胶凝固化产物。

    Silicone composition capable of yeilding a cured product having good
thermal conductivity
    7.
    发明授权
    Silicone composition capable of yeilding a cured product having good thermal conductivity 失效
    能够使具有良好导热性的固化产物的硅酮组合物

    公开(公告)号:US5530060A

    公开(公告)日:1996-06-25

    申请号:US410641

    申请日:1995-03-21

    摘要: A silicone composition is of the addition reaction type which comprises a vinyl group-containing organopolysiloxane, an organohydrogenpolysiloxane which has at least one hydrogen atom joined to a silicon atom in one molecule, a platinum group metal catalyst, and an aluminum oxide powder which is substantially round or spherical in shape with an average particle size of not larger than 50 .mu.m and wherein when the aluminum oxide powder is subjected to extraction of alkali metal ions and halogen ions under conditions of 121.degree. C., 2 atmospheric pressures, 100% R.H. and 20 hours, the contents of both ions are, respectively, not larger than 5 ppm. The cured product obtained from the composition has high thermal conductivity and the composition is useful as a sealant of electric and electronic parts and can prevent the parts from being corroded.

    摘要翻译: 硅氧烷组合物为加成反应型,其包含含乙烯基的有机聚硅氧烷,在一分子中具有至少一个连接到硅原子的氢原子的有机氢聚硅氧烷,铂族金属催化剂和基本上为 平均粒径不大于50μm的圆形或球形,其中当在121℃,2个大气压,100%RH的条件下将氧化铝粉末进行碱金属离子和卤素离子萃取时 和20小时,两个离子的含量分别不大于5ppm。 由该组合物得到的固化物具有高导热性,并且该组合物可用作电气和电子部件的密封剂,并且可以防止该部件被腐蚀。

    Gel-forming silicone composition
    9.
    发明授权
    Gel-forming silicone composition 失效
    凝胶形成硅酮组合物

    公开(公告)号:US5571853A

    公开(公告)日:1996-11-05

    申请号:US504489

    申请日:1995-07-20

    摘要: A gel-forming silicone composition comprising (A) an organopolysiloxane containing a silicon-bonded alkenyl group or groups in an average amount of from 0.15 to 0.35 mol % based on all silicon-bonded organic groups contained per molecule, (B) a non-functional organopolysiloxane, (C) an organohydrogenpolysiloxane containing an average of 2 silicon-bonded hydrogen atoms per molecule, and (D) an addition reaction catalyst. The silicone composition is able to give a gel-like cured silicone product with low modulus of elasticity while retaining flexibility.

    摘要翻译: 一种凝胶形成硅氧烷组合物,其包含(A)含有硅键合的烯基的有机聚硅氧烷或平均含量为0.15至0.35摩尔%的基于每分子含有所有与硅键合的有机基团的组分,(B) 功能性有机聚硅氧烷,(C)每分子平均含有2个与硅键合的氢原子的有机氢聚硅氧烷,(D)加成反应催化剂。 有机硅组合物能够提供具有低弹性模量的凝胶状固化的硅氧烷产品,同时保持柔韧性。

    Flame retardant silicone compositions
    10.
    发明授权
    Flame retardant silicone compositions 失效
    阻燃硅酮组合物

    公开(公告)号:US5516838A

    公开(公告)日:1996-05-14

    申请号:US516515

    申请日:1995-08-17

    摘要: To a silicone composition comprising (A) an organopolysiloxane having at least two alkenyl groups in a molecule, (B) an organohydrogenpolysiloxane having at least two hydrogen atoms each directly attached to a silicon atom in a molecule, and (C) a platinum catalyst, (D) a compound having a phenyl group and a secondary or tertiary amino group directly attached thereto is added to render the composition flame retardant. The composition cures into a transparent product having improved flame retardancy meeting the UL standard and is suitable for use in the protection of electronic parts like ICs and hybrid ICs.

    摘要翻译: 对于包含(A)在分子中具有至少两个烯基的有机聚硅氧烷的聚硅氧烷组合物,(B)具有至少两个氢原子的有机氢聚硅氧烷,各自直接连接到分子中的硅原子上,和(C)铂催化剂, (D)加入具有苯基和与其直接连接的仲或叔氨基的化合物,使组合物阻燃。 该组合物固化成具有符合UL标准的具有改进的阻燃性的透明产品,并且适用于保护电子部件如IC和混合IC。