Room-temperature-curable organopolysiloxane composition
    34.
    发明授权
    Room-temperature-curable organopolysiloxane composition 有权
    室温可固化的有机聚硅氧烷组合物

    公开(公告)号:US07550548B2

    公开(公告)日:2009-06-23

    申请号:US11765811

    申请日:2007-06-20

    IPC分类号: C08G77/04

    摘要: A room-temperature-curable organopolysiloxane composition comprising: (A) 100 parts by weight of an organopolysiloxane having a viscosity of from 100 to 500,000 mPa·s at 25° C. and having in one molecule 1.5 or more end groups represented by the general formula: (X)aR13-aSi—, where each X is independently a hydroxyl group or a hydrolyzable group, each R1 is independently a monovalent hydrocarbon group or a halogen-substituted monovalent hydrocarbon group, and a is 1, 2, or 3; (B) 0.01 to 40 parts by weight of a cross-linking agent selected from a silane or a siloxane oligomer where the cross-linking agent has three or more silicon-bonded hydrolyzable groups per molecule; and (C) microparticles of thermoplastic resin containing a platinum compound in such an amount that the content of metallic platinum in component (C) is within the range of 0.01 to 5 wt. %, where the microparticles have an average diameter from 0.1 to 20 μm, component (C) is present in an amount sufficient to provide 1 to 2,000 ppm of metallic platinum in the composition; and (D) 5 to 300 parts by weight of an inorganic powder.

    摘要翻译: 一种室温可固化的有机基聚硅氧烷组合物,其包含:(A)100重量份在25℃下粘度为100至500,000mPa.s并且在一个分子中具有由一般分子表示的1.5个或更多个端基的有机聚硅氧烷 公式:<?in-line-formula description =“In-line Formulas”end =“lead”?>(X)aR13-aSi-,其中<?in-line-formula description =“In-line Formulas”end = “尾”→“X”各自独立地为羟基或可水解基团,每个R 1独立地为一价烃基或卤素取代的一价烃基,a为1,2或3; (B)0.01〜40重量份选自硅烷或硅氧烷低聚物的交联剂,其中交联剂每分子具有三个或更多个硅键合的可水解基团; 和(C)含有铂化合物的热塑性树脂微粒的量使得组分(C)中金属铂的含量在0.01至5重量%的范围内。 %,其中微粒的平均直径为0.1-20μm,组分(C)的存在量足以在组合物中提供1至2,000ppm的金属铂; 和(D)5〜300重量份的无机粉末。

    Silicone gel composition for use as a sealant and a filler for
electrical and electronic components and a gel prepared from this
composition
    35.
    发明授权
    Silicone gel composition for use as a sealant and a filler for electrical and electronic components and a gel prepared from this composition 失效
    用作密封剂的硅胶组合物和用于电气和电子部件的填料以及由该组合物制备的凝胶

    公开(公告)号:US6001918A

    公开(公告)日:1999-12-14

    申请号:US110633

    申请日:1998-07-06

    摘要: A silicone gel composition comprising: (A) 100 parts by weight of an organopolysiloxane containing at least two alkenyl groups per molecule and having a viscosity of 0.01 to 100 Pa.s at 25.degree. C.; (B) an organopolysiloxane containing at least two silicon-bonded hydrogen atoms per molecule and having a viscosity of 0.001 to 10 Pa.s at 25.degree. C. in an amount sufficient to provide from 0.2 to 5 moles of silicon-bonded hydrogen atoms per one mole of alkenyl groups in component (A); (C) 0.01 to 15 parts by weight of a silica powder having a specific surface area of at least 50 m.sup.2 /g; (D) 0.0001 to 1.0 part by weight of a diamine compound represented by the following general formula: R.sup.1.sub.2 N--R.sup.2 --NR.sup.1.sub.2 wherein each R.sup.1 is independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and R.sup.2 is an alkylene group having 2 to 4 carbon atoms; and (E) a hydrosilylation catalyst in a catalytic quantity; wherein the weight ratio of component (D) to component (C) in said gel composition is from 0.0005 to 0.05; and the silicone gel composition cures to form a silicone gel having a loss elastic modulus at 25.degree. C. and at a shear frequency of 0.1 Hz of from 1.0.times.10.sup.2 to 1.0.times.10.sup.4 Pa, and a complex modulus of elasticity less than 1.0.times.10.sup.5 Pa.

    摘要翻译: 一种硅凝胶组合物,其包含:(A)每分子100重量份含有至少两个烯基的有机聚硅氧烷,并且在25℃下的粘度为0.01至100Pa.s。 (B)每分子含有至少两个与硅键合的氢原子的有机聚硅氧烷,其在25℃下的粘度为0.001至10Pa.s,其量足以提供0.2至5摩尔与硅键合的氢原子 组分(A)中的1摩尔烯基; (C)0.01〜15重量份比表面积为50m 2 / g以上的二氧化硅粉末; (D)0.0001〜1.0重量份由以下通式表示的二胺化合物:R12N-R2-NR12,其中每个R1独立地是氢原子或具有1-4个碳原子的烷基,R2是亚烷基 具有2至4个碳原子; 和(E)催化剂的氢化硅烷化催化剂; 其中所述凝胶组合物中组分(D)与组分(C)的重量比为0.0005至0.05; 并且硅凝胶组合物固化以形成在25℃和0.1Hz的剪切频率为1.0×10 2至1.0×10 4 Pa下的损耗弹性模量和小于1.0×10 5 Pa的复数弹性模量的硅凝胶。

    Organocyclosiloxane and method for its preparation
    36.
    发明授权
    Organocyclosiloxane and method for its preparation 失效
    有机环硅氧烷及其制备方法

    公开(公告)号:US5239085A

    公开(公告)日:1993-08-24

    申请号:US842292

    申请日:1992-02-26

    IPC分类号: C07F7/21

    CPC分类号: C07F7/21

    摘要: An organocyclosiloxane having utility as a coupling agent is disclosed said organocyclosiloxane having the general formula ##STR1## wherein R.sup.1 is independently selected from monovalent hydrocarbon groups having 1 to 8 carbons, R.sup.2 is selected from the group consisting of an alkoxy group and an alkoxysilylalkyl group, R.sup.3 is an organofunctional group selected from the group consisting of glycidoxyalkyl, methacryloxyalkyl, N-(trialkylsilyl)aminoalkyl (hydroxyphenyl)alkyl and haloalkyl x is 1 to 6 and y is 1 to 6, with the proviso that x+y is an integer having a value of 3 to 8.

    摘要翻译: 公开了作为偶联剂使用的有机环硅氧烷,其具有通式“IMAGE”的有机环硅氧烷,其中R1独立地选自碳原子数1〜8的一价烃基,R2选自烷氧基和烷氧基甲硅烷基烷基, R3是选自缩水甘油氧基烷基,甲基丙烯酰氧基烷基,N-(三烷基甲硅烷基)氨基烷基(羟基苯基)烷基和卤代烷基的有机官能团,其为1至6,y为1至6,条件是x + y为具有 值为3到8。