Silicone rubber roll
    7.
    发明授权
    Silicone rubber roll 失效
    硅橡胶卷

    公开(公告)号:US5582885A

    公开(公告)日:1996-12-10

    申请号:US247190

    申请日:1994-05-20

    摘要: A silicone rubber roll is characteristically prepared on a metallic center by forming a layer of the cured product of a silicone rubber composition which comprises (A) organopolysiloxane, in which the total amount of low molecular weight siloxanes having a degree of polymerization ranging from 3 to 20 is controlled to be at most 10,000 ppm, (B) reinforcing silica powder with a specific surface area of at least 50 m.sup.2 /g, (C) silicone elastomer particles with an average particle size of 200 .mu.m, in which the total amount of low molecular weight siloxanes having a degree of polymerization ranging from 3 to 20 is 2,000 ppm or less, and (D) a curing agent. The total amount of low molecular weight siloxanes having a degree of polymerization ranging from 3 to 20 within the cured product layer is controlled to be 2,000 ppm or less, since the elimination of the low molecular weight siloxanes having a degree of polymerization ranging from 3 to 20 proceeds effectively during the processes of the silicone rubber composition preparation, forming, and curing. Therefore, the obtained roll is extremely useful for various types of rolls utilized in copying machines which particularly need to avoid the low molecular weight siloxanes.

    摘要翻译: 通过形成硅橡胶组合物的固化产物层,在金属中心上形成硅橡胶辊,该硅橡胶组合物包含(A)有机聚硅氧烷,其中聚合度为3〜3的低分子量硅氧烷的总量为 20的比例控制在10000ppm以下,(B)比表面积为50m 2 / g以上的增强二氧化硅粉末,(C)平均粒径200μm的硅氧烷弹性体粒子,其中, 的聚合度为3〜20的低分子量硅氧烷为2,000ppm以下,(D)固化剂。 将固化产物层内聚合度为3〜20的低分子量硅氧烷的总量控制在2000ppm以下,由于消除聚合度为3〜3的低分子量硅氧烷, 20在硅橡胶组合物制备,成型和固化过程中有效地进行。 因此,所得到的辊对于特别需要避免低分子量硅氧烷的复印机中使用的各种辊非常有用。

    Crosslinkable rubber compositions and use thereof
    8.
    发明授权
    Crosslinkable rubber compositions and use thereof 有权
    可交联橡胶组合物及其用途

    公开(公告)号:US06864315B1

    公开(公告)日:2005-03-08

    申请号:US09673608

    申请日:2000-03-14

    摘要: The crosslinkable rubber composition of the invention is crosslinkable by hot air, and a hot-air crosslinked rubber sheet thereof has no scratch on the surface in a hardness test using a pencil of HB and has a compression set of not more than 70% after a heat treatment at 150° C. for 22 hours. The rubber composition comprises an ethylene/α-olefin/non-conjugated polyene random copolymer rubber comprising a specific vinyl end group-containing norbornene compound, a SiH group-containing compound having at least two SiH groups in one molecule, and if necessary, an addition reaction catalyst comprising a platinum group element and a reaction inhibitor. The automobile weatherstrip, hose, rubber vibration insulator, belt, sealing material, expanded product, covered electric wire, electric wire joint, electric insulating part and household rubber product according to the invention comprise the above-mentioned rubber composition. The rubber composition has a high crosslinking rate and excellent productivity to produce crosslinked rubber molded products, is capable of undergoing hot-air crosslinking such as HAV or UHF and is capable of providing crosslinked rubber molded products having excellent compression set resistance, strength properties, heat resistance, weathering resistance and abrasion resistance.

    摘要翻译: 本发明的交联性橡胶组合物可以通过热风进行交联,在使用HB的铅笔的硬度试验中,热风交联橡胶片在表面没有刮痕,并且在a后的压缩永久变形为70%以上 在150℃下热处理22小时。 该橡胶组合物包含一个乙烯/α-烯烃/非共轭多烯无规共聚物橡胶,其包含特定的含乙烯基端基的降冰片烯化合物,在一个分子中具有至少两个SiH基团的含SiH基化合物,如果需要, 包含铂族元素和反应抑制剂的加成反应催化剂。 根据本发明的汽车密封条,软管,橡胶振动绝缘子,带,密封材料,膨胀产品,包覆电线,电线接头,电绝缘部件和家用橡胶制品包括上述橡胶组合物。 橡胶组合物具有高交联率和优异的生产交联橡胶成型体的生产率,能够进行热风交联如HAV或UHF,并且能够提供具有优异的耐压缩变形性,强度性能,热性能的交联橡胶模制产品 耐电阻,耐候性和耐磨性。

    Silicone rubber compositions
    9.
    发明授权
    Silicone rubber compositions 失效
    硅橡胶组合物

    公开(公告)号:US5521245A

    公开(公告)日:1996-05-28

    申请号:US267700

    申请日:1994-06-29

    摘要: A rubber compound comprising (A) an organopolysiloxane having at least two alkenyl groups in a molecule and (B) reinforcing silica powder is blended with (C) silicone elastomer particles obtained by reacting an organohydrogenpolysiloxane with a vinyl group-containing organopolysiloxane such that the molar ratio of .tbd.SiH group to --CH.dbd.CH.sub.2 group ranges from 1.2 to 5 and (D) a platinum catalyst to form a silicone rubber composition which cures into a product having high rubber strength despite the inclusion of silicone elastomer particles. The composition finds typical use as silicone rubber parts in copying machines.

    摘要翻译: 包含(A)在分子中具有至少两个烯基的有机聚硅氧烷和(B)增强二氧化硅粉末的橡胶化合物与(C)通过使有机氢聚硅氧烷与含乙烯基的有机聚硅氧烷反应而获得的硅氧烷弹性体颗粒共混,使得摩尔 3BOND SiH基团与-CH = CH 2基团的比例范围为1.2至5,(D)铂催化剂,以形成硅橡胶组合物,其固化成具有高橡胶强度的产品,尽管包含有机硅弹性体颗粒。 该组合物在复印机中用作硅橡胶部件。

    Crosslinkable rubber compositions and uses thereof
    10.
    发明授权
    Crosslinkable rubber compositions and uses thereof 有权
    可交联橡胶组合物及其用途

    公开(公告)号:US07208548B2

    公开(公告)日:2007-04-24

    申请号:US11002938

    申请日:2004-12-03

    IPC分类号: C08L83/00

    摘要: The crosslinkable rubber composition of the invention is crosslinkable by hot air, and a hot-air crosslinked rubber sheet thereof has no scratch on the surface in a hardness test using a pencil of HB and has a compression set of not more than 70% after a heat treatment at 150° C. for 22 hours. The rubber composition comprises an ethylene/α-olefin/non-conjugated polyene random copolymer rubber comprising a specific vinyl end group-containing norbornene compound, a SiH group-containing compound having at least two SiH groups in one molecule, and if necessary, an addition reaction catalyst comprising a platinum group element and a reaction inhibitor.

    摘要翻译: 本发明的交联性橡胶组合物可以通过热风进行交联,在使用HB的铅笔的硬度试验中,热风交联橡胶片在表面没有刮痕,并且在a后的压缩永久变形为70%以上 在150℃下热处理22小时。 该橡胶组合物包含一个乙烯/α-烯烃/非共轭多烯无规共聚物橡胶,其包含特定的含乙烯基端基的降冰片烯化合物,在一个分子中具有至少两个SiH基团的含SiH基化合物,如果需要, 包含铂族元素和反应抑制剂的加成反应催化剂。