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    • 1. 发明申请
    • ADDITION CURING SILICONE RUBBER COMPOSITION AND ITS CURED PRODUCT
    • 添加固化硅橡胶组合物及其固化产品
    • US20080249244A1
    • 2008-10-09
    • US12061467
    • 2008-04-02
    • Noriyuki MEGURIYAShinichi IdeToshio Yamazaki
    • Noriyuki MEGURIYAShinichi IdeToshio Yamazaki
    • C08L83/04
    • C08L83/04C08G77/045C08G77/12C08G77/20C08L83/00
    • An addition curing silicone rubber composition and a cured product thereof are provided. In this composition, amount of the low molecular weight siloxane component volatilizing from the cured product has been reduced, and as a consequence, this composition is free from the problems such as clouding or haze, contact fault, adhesion failure, and hydrophobicization of the surface caused by the deposition of the volatilized low-molecular weight siloxane component on the surrounding surfaces. More specifically, the addition curing silicone rubber composition comprises; (A) 100 parts by weight of a polyorganosiloxane containing, on average, at least two alkenyl groups which are bonded to silicon atom; (B) 0.3 to 20 parts by weight of an organohydrogenpolysiloxane containing at least two hydrogen atoms which are bonded to silicon atom (SiH functional groups) per molecule; and (C) a catalytic amount of a addition reaction catalyst, and content of the polyorganosiloxane having a degree of polymerization of up to 10 and containing at least one SiH functional group per molecule is up to 0.5% by weight in relation to the entire composition.
    • 提供加成硫化硅橡胶组合物及其固化物。 在该组合物中,从固化物挥发的低分子量硅氧烷成分的量已经减少,结果,该组合物没有诸如混浊或混浊,接触不良,粘附破坏和表面疏水化的问题 这是由挥发的低分子量硅氧烷组分沉积在周围的表面上引起的。 更具体地,加成固化硅橡胶组合物包含: (A)100重量份含有至少两个与硅原子键合的链烯基的聚有机硅氧烷; (B)0.3〜20重量份含有每分子与硅原子(SiH官能团)键合的至少两个氢原子的有机氢聚硅氧烷; 和(C)催化量的加成反应催化剂,聚合有机硅氧烷的含量至多为10,每分子含有至少一个SiH官能团,其含量相对于整个组合物为至多0.5重量% 。
    • 3. 发明申请
    • CROSSLINKABLE RUBBER COMPOSITION
    • 可交联橡胶组合物
    • US20110301278A1
    • 2011-12-08
    • US13151023
    • 2011-06-01
    • Akira SANNOMIYAKenji IIDANoriyuki MEGURIYAAtsuhito KASHIMA
    • Akira SANNOMIYAKenji IIDANoriyuki MEGURIYAAtsuhito KASHIMA
    • C08L47/00C08L83/05
    • C08L23/16C08G77/12C08K3/08C08K3/36C08L83/04C08L2312/00
    • A crosslinkable rubber composition includes, as essential components: (A) an ethylene-α-olefin-nonconjugated polyene random copolymer rubber in which the nonconjugated polyene has a terminal vinyl group-containing norbornene compound represented by the following general formula (1) or (II), wherein n is an integer of 0 to 10, R1 is H or an alkyl group, and R2 is H or an alkyl group, wherein R3 is H or an alkyl group, and which has a viscosity of not less than 10 Pa·s and less than 1,000 Pa·s at 25° C. under a shear rate of 10 s−1; (B) an organopolysiloxane which has three repeating units of siloxane represented by the following formula and which has three Si-bonded hydrogen atoms per molecule, wherein R4 is a monovalent hydrocarbon group; (C) a reinforcing filler; (D) a curing catalyst; and (E) a curing reaction retarder.
    • 作为必要成分,可交联橡胶组合物含有:(A)乙烯-α-烯烃 - 非共轭多烯无规共聚物橡胶,其中非共轭多烯具有由以下通式(1)表示的含末端乙烯基的降冰片烯化合物或( II),其中n为0〜10的整数,R1为H或烷基,R2为H或烷基,其中R3为H或烷基,粘度为10Pa以上 ·在10s -1的剪切速率下在25℃下小于1,000Pa·s; (B)有机聚硅氧烷,其具有三个由下式表示的硅氧烷重复单元,每分子具有三个Si键合的氢原子,其中R4是一价烃基; (C)增强填料; (D)固化催化剂; 和(E)固化反应缓凝剂。