RTV Silicone pastes
    3.
    发明授权
    RTV Silicone pastes 失效
    RTV硅胶

    公开(公告)号:US4585849A

    公开(公告)日:1986-04-29

    申请号:US654996

    申请日:1984-09-26

    摘要: In a polydiorganosilixane composition which is capable of storage in the absence of moisture and can be cured at ambient temperature under the action of water or moisture to give elastomers, the composition comprising a diorganosiloxane having reactive terminal groups, a diorganosilane having groups which are sensitive to hydrolysis, a cross-linking agent, and optionally fillers which have a thixotropic effect, condensation catalysts and/or other known auxiliaries, the improvement which comprises employing as the silane (a) a silane of the formulaRR.sup.1 Si(NR.sup.2 R.sup.3).sub.2plus (b) an organosilane of the formulaRSi (O--N.dbd.R.sup.4).sub.3in whichR, R.sup.1, R.sup.2 and R.sup.3 each independently is alkyl, aryl, aralkyl and vinyl groups, orR.sup.2 and R.sup.3 together can be an alkanediyl radical having up to 8 C atoms or hydrogen, andR.sup.4 is an R.sup.2 R.sup.3 C group having up to 8 C atoms. The composition cures at room temperature in the presence of moisture to elastomers of desirable physical properties.

    摘要翻译: 在聚二有机硅烷组合物中,其能够在不存在水分的情况下储存并且可以在环境温度下在水或水分的作用下固化,得到弹性体,该组合物包含具有反应性末端基团的二有机硅氧烷,具有对 水解,交联剂和任选具有触变效应的填料,缩合催化剂和/或其它已知的助剂,其改进包括使用式(a)式(I)的硅烷:(式中,R 1,R 2,R 3)2加上(b )式RSi(ON = R4)3的有机硅烷,其中R,R 1,R 2和R 3各自独立地是烷基,芳基,芳烷基和乙烯基,或者R 2和R 3一起可以是具有至多8个C原子的烷二基 或氢,R4是具有至多8个C原子的R 2 R 3 C基团。 组合物在室温下在湿气存在下固化成具有所需物理性能的弹性体。

    Stable silicone emulsions
    4.
    发明授权
    Stable silicone emulsions 失效
    稳定的硅氧烷乳液

    公开(公告)号:US4554187A

    公开(公告)日:1985-11-19

    申请号:US622936

    申请日:1984-06-21

    摘要: A silicone emulsion which can be converted into an elastomeric product under ambient conditions by eliminating and evaporating water and alcohol or carboxylic acid, comprising by weight approximately(A) 100 parts of a hydroxyl-terminated polydiorganosiloxane having a molecular weight of at least about 50,000,(B) 1 to 400 parts of a low molecular weight, reactive acyloxy or alkoxy-functional silicone resin,(C) 0.1 to 20 parts of a catalytic compound,(D) 0 to 200 parts of a thixotropic filler and(E) 0 to 200 parts by weight of a non-thixotropic filler, the silicone emulsion having a solids content of about 20 to 85% by weight. The emulsion is especially suited for coatings and sealants.

    摘要翻译: 硅氧烷乳液,其可在环境条件下通过除去和蒸发水和醇或羧酸而转化成弹性体产物,所述水和醇或羧酸的重量约为(A)100份分子量为至少约50,000的羟基封端的聚二有机硅氧烷, (B)1〜400份低分子量反应性酰氧基或烷氧基官能的有机硅树脂,(C)0.1〜20份催化剂,(D)0〜200份触变性填料和(E)0 至200重量份的非触变性填料,所述硅氧烷乳液具有约20至85重量%的固体含量。 该乳液特别适用于涂料和密封剂。