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    • 4. 发明授权
    • Flowable adhesive
    • 可流动粘合剂
    • US5696210A
    • 1997-12-09
    • US723461
    • 1996-10-09
    • Russell Keith KingChi-Long Lee
    • Russell Keith KingChi-Long Lee
    • C09J183/05C08F299/08C09J183/04C09J183/07C08F283/00
    • C08F299/08C09J183/04
    • This invention pertains to an addition-curable silicone adhesive composition that is extrudable and flowable at room temperature in the absence of a solvent comprising (A) 40 to 95 parts of an alkenyl functional siloxane resin consisting essentially of R.sub.3 SiO.sub.1/2 siloxane units and SiO.sub.4/2 siloxane units, wherein R is a monovalent hydrocarbon radical having 1 to 6 carbon atoms; there being from 0.5 to 1.5 R.sub.3 SiO.sub.1/2 units for every SiO.sub.4/2 units; said resin containing 0.01 to 22 wt % alkenyl functionality; (B) 0.5 to 10 parts of an SiH containing polyorganosiloxane having an average of at least 2 silicon-bonded hydrogen atoms per molecule and having a viscosity of 0.8 to 2,000 mm.sup.2 /s; (C) a hydrosilylation catalyst in sufficient quantity to promote curing of said composition; (D) optionally, up to 70 parts of a polydiorganosiloxane having at least two ethylenically or acetylenically unsaturated groups per molecule and having a viscosity of 100 to 80,000 mm.sup.2 /s; and (E) optionally, an inhibitor in sufficient quantity for the composition to be stable at room temperature in the absence of oxygen and SiH reactive hydroxylated compounds.
    • 本发明涉及在不存在溶剂的情况下在室温下可挤出和流动的可加成固化的硅氧烷粘合剂组合物,其包含(A)40至95份基本上由R 3 SiO 1/2硅氧烷单元和SiO 4 / 2个硅氧烷单元,其中R是具有1至6个碳原子的一价烃基; 每个SiO 4/2单位为0.5〜1.5个R3SiO1 / 2单位; 所述树脂含有0.01至22重量%的链烯基官能团; (B)0.5〜10份含有SiH的聚有机硅氧烷,每分子平均具有至少2个与硅键合的氢原子,粘度为0.8〜2,000mm 2 / s; (C)足够量的氢化硅烷化催化剂以促进所述组合物的固化; (D)任选地,至多70份每分子具有至少两个烯属或炔属不饱和基团并且具有100至80,000mm 2 / s粘度的聚二有机硅氧烷; 和(E)任选地,足够量的抑制剂使组合物在室温下在不存在氧和SiH反应性羟基化合物的情况下是稳定的。
    • 6. 发明授权
    • Storage stable heat curable organosiloxane compositions containing a
microencapsulated catalyst and method for preparing said catalyst
    • 含有微囊化催化剂的储存稳定的可热固化的有机硅氧烷组合物和制备所述催化剂的方法
    • US5077249A
    • 1991-12-31
    • US672814
    • 1991-03-21
    • Chi-Long LeeMing-Hsiung Yeh
    • Chi-Long LeeMing-Hsiung Yeh
    • C08J3/24C08K5/54C08K9/10C08L83/04
    • C08J3/241C08K5/54C08K9/10C08L83/04C08G77/06C08J2383/04Y10S502/522
    • The present invention provides microencapsulated liquid or solubilized curing catalysts for one-part heat curable organosiloxane compositions. Compositions containing these exhibit long-term storage stability yet cure rapidly when heated above the melting point of the encapsulating polymer. At least a portion of these microcapsules are less than one micron in diameter, and substantially all are less than about three microns in diameter. Compositions containing the preferred platinum group metals as catalysts are optically transparent.The microencapsulated curing catalysts of this invention are prepared by the photoinitiated polymerization of at least one solubilized hydroxyl-containing ethylenically unsaturated organic compound in the presence of a photoinitiator for the polymerization of said compound, an optional surfactant, and a liquid or solubilized curing catalyst for organosiloxane compositions. The curing agent is in the form of a coordination complex with an ethylenically or acetylenically unsaturated organic compound and the solvent for the polymerization reaction is a mono- or polyhydric alcohol.
    • 本发明提供用于一部分可热固化的有机硅氧烷组合物的微胶囊化液体或溶解的固化催化剂。 含有这些物质的组合物显示出长期的储存稳定性,当加热至高于包封聚合物的熔点时,其迅速固化。 这些微胶囊的至少一部分直径小于1微米,并且基本上全部直径小于约3微米。 含有优选的铂族金属作为催化剂的组合物是光学透明的。 本发明的微囊化固化催化剂是通过在光引发剂存在下使至少一种溶解的含羟基的烯键式不饱和有机化合物进行光引发聚合来制备的,所述光引发剂用于所述化合物,任选的表面活性剂和液体或溶解的固化催化剂 有机硅氧烷组合物。 固化剂是与烯属或炔属不饱和有机化合物的配位络合物的形式,聚合反应的溶剂是一元醇或多元醇。
    • 7. 发明授权
    • Method of producing elastomeric silicone foam
    • 生产弹性硅酮泡沫的方法
    • US4593049A
    • 1986-06-03
    • US787857
    • 1985-10-16
    • Therese M. BaumanChi-Long LeeJames A. Rabe
    • Therese M. BaumanChi-Long LeeJames A. Rabe
    • C08J9/02C08L83/04C08L83/07C08J9/14
    • C08J9/02C08J2383/04
    • A method of producing elastomeric silicone foams from a two-part system is disclosed. The method mixes the ingredients then allows a froth to form and cure at ambient temperature to an elastomeric silicone foam. The method mixes a vinyl-containing polydiorganosiloxane (1), a hydroxylated polydiorganosiloxane (2), a platinum catalyst (3), an organohydrogensiloxane (4) and a profoamer (5). The profoamer is a resinous, benzene-soluble organosiloxane copolymer consisting essentially of SiO.sub.4/2 units, silicone bonded hydroxyl groups, (CH.sub.3).sub.3 SiO.sub.1/2 units, and fluorine-containing units. An embodiment of the method includes a liquified blowing agent and stores the mixture under superatmospheric pressure, forming a foam by releasing the mixture to atmospheric pressure. Another embodiment includes an alcohol in the mixture to provide a foam of lower density. When lauryl alcohol is used and the alcohol is mixed with (1), (3), and (5) before (2) is admixed, the foam has a Bashore resiliency of less than 20.
    • 公开了一种从两部分系统生产弹性硅酮泡沫的方法。 该方法混合成分,然后允许泡沫在环境温度下形成和固化成弹性硅酮泡沫。 该方法混合含乙烯基的聚二有机硅氧烷(1),羟基化聚二有机硅氧烷(2),铂催化剂(3),有机氢硅氧烷(4)和溶剂(5)。 溶剂是基于SiO 4/2单元,硅氧烷键合羟基,(CH3)3SiO1 / 2单元和含氟单元组成的树脂,可溶于苯的有机硅氧烷共聚物。 该方法的一个实施方案包括液化发泡剂并将混合物储存在超大气压下,通过将混合物释放到大气压来形成泡沫。 另一个实施方案包括混合物中的醇以提供较低密度的泡沫。 当使用月桂醇并将醇与(1),(3)和(5)混合在(2)之前混合时,泡沫的底部弹性小于20。