Silicone rubber compositions and cured products thereof
    1.
    发明授权
    Silicone rubber compositions and cured products thereof 失效
    硅橡胶组合物及其固化产物

    公开(公告)号:US5563203A

    公开(公告)日:1996-10-08

    申请号:US339665

    申请日:1994-11-14

    IPC分类号: C08L83/04 C08L83/00

    摘要: A silicone rubber composition is prepared by mixing 100 parts by weight of an alkenyl-containing organopolysiloxane having a degree of polymerization of at least 3,000 and 5 to 30 parts by weight of finely divided silica having a specific surface of at least 50 m.sup.2 /g with 0.5 to 10 parts by weight of an organopolysiloxane resin having a weight average molecular weight of 500 to 50,000, a OH group content of 0.0001 to 0.01 mol/g, and a liquefying temperature of 50.degree. to 150.degree. C., at a temperature above the liquefying temperature of the resin. The composition has high plasticity in an uncured base compound form and is effective for extrusion molding. The composition cures into silicone rubber having low hardness, good flexibility and excellent physical properties, finding a variety of applications.

    摘要翻译: 通过将100重量份具有至少3,000的聚合度的烯基的有机聚硅氧烷和5至30重量份的比表面积至少为50m 2 / g的细碎二氧化硅与100重量份的硅橡胶组合物混合, 0.5〜10重量份的重均分子量为500〜50,000的有机聚硅氧烷树脂,OH基含量为0.0001〜0.01摩尔/克,液化温度为50〜150℃,温度高于 树脂的液化温度。 该组合物在未固化的基础化合物形式中具有高塑性,并且对于挤出成型是有效的。 该组合物固化成具有低硬度,良好的柔韧性和优异的物理性能的硅橡胶,发现各种应用。

    Silicone rubber composition and method for the preparation thereof
    2.
    发明授权
    Silicone rubber composition and method for the preparation thereof 失效
    硅橡胶组合物及其制备方法

    公开(公告)号:US5179148A

    公开(公告)日:1993-01-12

    申请号:US698025

    申请日:1991-05-10

    IPC分类号: C08K3/36 C08L83/04 C08L83/08

    摘要: A silicone rubber composition having excellent workability and extrusion-moldability and capable of giving cured silicone rubber articles having good mechanical properties is proposed, which is prepared by admixing, in addition to the conventional ingredients of an organopolysiloxane gum, a finely divided reinforcing silica filler and a curing agent such as an organic peroxide, a low molecular-weight organopolysiloxane having, in a molecule, at least three silanolic hydroxy groups which serves as a wetting agent of the silica filler so as to improve the compatibility of the silica filler with the organopolysiloxane gum giving a possibility of increasing the amount of the silica filler without adverse influences such as a decrease in the plasticity of the composition.

    摘要翻译: 提出了具有优异的加工性和挤出成型性并能够得到具有良好机械性能的固化的硅橡胶制品的硅橡胶组合物,其通过将有机聚硅氧烷胶的常规成分,细碎的增强二氧化硅填料和 固化剂如有机过氧化物,低分子量有机聚硅氧烷,其在分子中具有至少三个硅烷醇羟基,其用作二氧化硅填料的润湿剂,以改善二氧化硅填料与有机聚硅氧烷的相容性 胶可以增加二氧化硅填料的量,而不会有不利影响,例如组合物的可塑性降低。

    Adhesion promotor
    3.
    发明授权
    Adhesion promotor 失效
    粘合促进剂

    公开(公告)号:US4727168A

    公开(公告)日:1988-02-23

    申请号:US774802

    申请日:1985-09-11

    摘要: The invention provides an efficient method for improving the adhesive bonding strength of various types of rubbery sealant compositions, e.g. room temperature curable silicone rubber composition, to the substrate surface on which it has been cured. The method comprises coating the substrate surface with or admixing the sealant composition before application to the substrate surface with an adhesion promotor which is a reaction product of a reaction mixture comprising:(a) 1 mole of an organic amine compound having at least one active hydrogen atom in a molecule or an aminoalkyl alkoxysilane compound;(b) from 0.5 to 4 moles of an organic compound having at least one epoxy group in a molecule or an epoxyalkyl alkoxysilane; and(c) from 0.5 to 12 moles of an alkoxysilane represented by the general formula R.sup.1.sub.a Si(OR.sup.2).sub.4-a, in which R.sup.1 is a hydrogen atom or a monovalent hydrocarbon group having 1 to 4 carbon atoms, R.sup.2 is a monovalent hydrocarbon group having 1 to 4 carbon atoms or an alkoxy-substituted alkyl group and a is a number of zero, 1, 2 or 3, or a partial hydrolysis product thereof, at least one of the components (a) and (b) being an aminoalkyl alkoxysilane or an epoxyalkyl alkoxysilane, respectively.

    摘要翻译: 本发明提供了一种改进各种类型的橡胶密封剂组合物的粘合强度的有效方法,例如, 室温可固化硅橡胶组合物,其固化在基材表面上。 该方法包括在施加到基材表面之前用密封剂组合物涂覆或混合密封剂组合物,粘合促进剂是反应混合物的反应产物,其包含:(a)1摩尔具有至少一个活性氢的有机胺化合物 分子中的原子或氨基烷基烷氧基硅烷化合物; (b)0.5〜4摩尔分子中具有至少一个环氧基的有机化合物或环氧烷基烷氧基硅烷; 和(c)0.5〜12摩尔由通式R1aSi(OR2)4-a表示的烷氧基硅烷,其中R1是氢原子或具有1-4个碳原子的一价烃基,R2是一价烃基 具有1至4个碳原子或烷氧基取代的烷基,a是0,1,2或3的数量或其部分水解产物,组分(a)和(b)中的至少一个是氨基烷基 烷氧基硅烷或环氧烷基烷氧基硅烷。

    Curable silicone rubber composition and method for preparing silicone
rubber
    5.
    发明授权
    Curable silicone rubber composition and method for preparing silicone rubber 失效
    可固化的硅橡胶组合物和硅橡胶的制备方法

    公开(公告)号:US5519082A

    公开(公告)日:1996-05-21

    申请号:US420504

    申请日:1995-04-12

    申请人: Masachika Yoshino

    发明人: Masachika Yoshino

    IPC分类号: C08K3/36 C08L83/04 C08K3/34

    摘要: A curable silicone rubber composition contains (A) an organopolysiloxane raw rubber containing 0.01-1% by weight of vinyl and having a viscosity of 10.sup.3 -10.sup.6 poise at 25.degree. C., (B) an organopolysiloxane oil containing 0.1-10% by weight of vinyl and having a viscosity of 0.05-100 poise at 25.degree. C., (C) an organopolysiloxane copolymer composed mainly of a triorganosiloxy unit (M) and SiO.sub.2 unit (Q) in a molar ratio (M/Q) between 0.6 and 1.2 and containing 0.1-10% by weight of vinyl, (D) an organohydrogensiloxane containing at least three silylidyne groups, (E) a platinum catalyst, and (F) finely divided silica as essential components. The composition is hot air vulcanizable into a silicone rubber which is improved in hardness, modulus, tear strength and compression set.

    摘要翻译: 可固化的硅橡胶组合物含有(A)含有0.01-1%(重量)乙烯基并在25℃时粘度为103-106泊的有机聚硅氧烷生橡胶,(B)含有0.1-10重量%的有机聚硅氧烷油 的乙烯基,在25℃下的粘度为0.05-100泊,(C)主要由三有机甲硅烷氧基单元(M)和SiO 2单元(Q)组成的有机聚硅氧烷共聚物,其摩尔比(M / Q)为0.6〜 1.2,含有0.1-10重量%的乙烯基,(D)含有至少三个甲硅烷基基团的有机氢硅氧烷,(E)铂催化剂和(F)细分二氧化硅作为必要组分。 该组合物是可硫化成硅橡胶的热空气,其硬度,模量,撕裂强度和压缩永久变形提高。

    Impression composition
    6.
    发明授权
    Impression composition 失效
    印象构成

    公开(公告)号:US5367001A

    公开(公告)日:1994-11-22

    申请号:US48577

    申请日:1993-04-09

    CPC分类号: A61K6/10 C08L83/12

    摘要: A impression composition comprising:(A) a polyether polymer having at least two alkenyl groups in its molecule,(B) a polyorganohydrogensiloxane having at least three silicon-bonded hydrogen atoms in its molecule,(C) a platinum catalyst,(D) an inorganic filler, and(E) an antioxidant.This composition of has hydrophilic nature and a small cure shrinkage; hence it enables precise impression in a wet environment like in a mouth.

    摘要翻译: 一种印模组合物,包括:(A)在其分子中具有至少两个烯基的聚醚聚合物,(B)在其分子中具有至少三个与硅键合的氢原子的聚有机氢硅氧烷,(C)铂催化剂,(D) 无机填料,(E)抗氧化剂。 该组合物具有亲水性,固化收缩小; 因此它可以在潮湿的环境中像嘴里一样精确地印象。

    Silicone rubber composition
    7.
    发明授权
    Silicone rubber composition 失效
    硅橡胶组合物

    公开(公告)号:US5246982A

    公开(公告)日:1993-09-21

    申请号:US860485

    申请日:1992-03-30

    摘要: A silicone rubber composition comprises:(A) an organopolysiloxane R.sub.a SiO.sub.(4-a)/2 having an average degree of polymerization of 3000 or greater, wherein R is a substituted or unsubstituted monovalent hydrocarbon group, and 0.0001-0.05 mol % of R is alkenyl; a is 1.95-2.05; and(B) a fine powder of hydrophobic silica, wherein the specific surface area is 50 m.sup.2 /g or greater, the silica surface includes hydrophobic groups f MesiO.sub.3/2 and Me.sub.2 SiO in a weight ratio (MeSiO.sub.3/2)/(Me.sub.2 SiO) or 5/95-95/5, and the total carbon content contained in the MeSiO.sub.3/2 and Me.sub.2 SiO groups account for 0.5 wt % of greater of the silica. A material obtained by hardening this rubber composition has desirable resistance to steam and LLC.

    摘要翻译: 硅橡胶组合物包含:(A)平均聚合度为3000以上的有机聚硅氧烷RaSiO(4-a)/ 2,其中R为取代或未取代的一价烃基,0.0001-0.05mol%的R为 烯基; a是1.95-2.05; 和(B)疏水性二氧化硅的细粉末,其比表面积为50m 2 / g以上,二氧化硅表面包含重量比(MeSiO 3/2)/(Me 2 SiO)的疏水基团F MesiO 3/2和Me 2 SiO,或 5 / 95-95 / 5,并且MeSiO3 / 2和Me2SiO组中含有的总碳含量占二氧化硅中较大者的0.5重量%。 通过硬化该橡胶组合物获得的材料具有对蒸汽和LLC的期望的耐受性。

    Silicone rubber compositions and their cured products
    10.
    发明授权
    Silicone rubber compositions and their cured products 失效
    硅橡胶组合物及其固化产物

    公开(公告)号:US5340872A

    公开(公告)日:1994-08-23

    申请号:US65269

    申请日:1993-05-21

    CPC分类号: C08K3/36 C08G77/54 C08L83/14

    摘要: Silicone rubber compositions which comprise (A) an organopolysiloxane, which possesses at least one triorganosilyl-amine group expressed by the following equation (1) at its molecular end and a degree of polymerization which is at least 2000, and the silicone rubber compositions which further comprise (B) a fine powdered silica whose specific surface area is at least 50 m.sup.2 /g, ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each a substituted or unsubstituted monovalent hydrocarbon group, each of which can be the same or different. The silicone rubber compositions are a non-fluidity type; therefore, they offer superior workability and formability. Further, silicone rubber obtained by the curing of the said compositions possess superior physical properties, extremely low hardness, flexibility, and good rubber elasticity, thus they are useful as raw materials of various products.

    摘要翻译: 硅氧烷橡胶组合物,其包含(A)有机聚硅氧烷,其有机聚硅氧烷在分子末端具有下列等式(1)表示的至少一种三有机甲硅烷基 - 胺基,聚合度至少为2000,以及进一步的硅橡胶组合物 包含(B)比表面积至少为50m 2 / g的细粉状二氧化硅,其中R1,R2,R3,R4和R5各自为取代或未取代的单价烃基,其中每一个可以 相同或不同 硅橡胶组合物是非流动性类型; 因此,它们具有优异的可加工性和成型性。 此外,通过所述组合物的固化获得的硅橡胶具有优异的物理性能,极低的硬度,柔韧性和良好的橡胶弹性,因此它们可用作各种产品的原料。