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    Chloroprene rubber, method for producing same, chloroprene rubber composition and vulcanized product of chloroprene rubber composition
    1.
    发明授权
    Chloroprene rubber, method for producing same, chloroprene rubber composition and vulcanized product of chloroprene rubber composition 有权
    氯丁橡胶，其生产方法，氯丁橡胶组合物和氯丁橡胶硫化产品组成

    公开(公告)号：US09464146B2

    公开(公告)日：2016-10-11

    申请号：US14417007

    申请日：2013-06-17

    申请人： DENKI KAGAKU KOGYO KABUSHIKI KAISHA

    发明人： Sachiyo Kishi ,  Hiroyuki Yashima ,  Hidehiro Matsuda

    IPC分类号： C08F36/18 ,  C08L11/00 ,  C08L93/04 ,  C08F136/18 ,  C08F236/18

    CPC分类号： C08F36/18 ,  C08F136/18 ,  C08F236/18 ,  C08L11/00 ,  C08L93/04 ,  C08F2/24 ,  C08F2/44

    摘要： Provided are a chloroprene rubber that is less adhesive to rolls and gives a vulcanized product superior in physical properties, a production method thereof, a chloroprene rubber composition and a vulcanized product thereof. A chloroprene rubber comprising a steroid skeleton-containing compound. The chloroprene rubber may contain a steroid skeleton-containing compound in an amount of 0.01 to 1 mass %. A vulcanized product is prepared by vulcanizing a composition containing the chloroprene rubber. The chloroprene rubber can be prepared, for example, by emulsion-polymerizing chloroprene alone or chloroprene and other monomers in combination in the presence of a rosin containing a steroid skeleton-containing compound.

    摘要翻译： 提供一种氯丁橡胶，其对辊的粘合性较差，得到物理性能优异的硫化产品，其制备方法，氯丁橡胶组合物及其硫化产物。 一种含有类固醇骨架的化合物的氯丁橡胶。 氯丁二烯橡胶可以含有0.01〜1质量％的含有类固醇骨架的化合物。 通过硫化含有氯丁二烯橡胶的组合物制备硫化产品。 氯丁橡胶可以例如通过在含有类固醇骨架的化合物的松香的存在下单独地将氯丁二烯乳化聚合或氯丁二烯和其它单体组合来制备。

    POLYCHLOROPRENE LATEX, POLYCHLOROPRENE LATEX COMPOSITION, AND MOLDED ARTICLE
    2.
    发明申请
    POLYCHLOROPRENE LATEX, POLYCHLOROPRENE LATEX COMPOSITION, AND MOLDED ARTICLE 有权
    聚氯乙烯，聚氯乙烯组合物和成型品

    公开(公告)号：US20150152209A1

    公开(公告)日：2015-06-04

    申请号：US14382478

    申请日：2013-03-01

    申请人： DENKI KAGAKU KOGYO KABUSHIKI KAISHA

    发明人： Hidehito Otsuka ,  Kiyoshi Sunada ,  Kenji Mochizuki ,  Toru Shiraiwa

    IPC分类号： C08F236/18 ,  C08L11/02 ,  C08F136/18

    CPC分类号： C08F236/18 ,  C08C1/15 ,  C08F36/18 ,  C08F136/18 ,  C08L11/02 ,  C08F2/26

    摘要： An object of the present invention is to provide a polychloroprene latex with improved rubber coagulability that gives a film superior in strength by dip molding, a polychloroprene latex composition, and a molded article. The polychloroprene latex is prepared by polymerization of 2-chloro-1,3-butadiene alone or by polymerization of raw monomers at least containing 2-chloro-1,3-butadiene and 2,3-dichloro1,3-butadiene and has a precipitation rate of 5 to 40%, as calculated according to Equation (I). In Equation (I), A is the mass (g) of the dry product, which is obtained by adding 50 ml of saturated aqueous solution of calcium hydroxide at 23° C. to 50 g of a latex having a solid matter concentration adjusted to 45 to 65 mass % at a liquid temperature of 23° C. over 2 minutes, filtering and collecting the generated precipitate with a 80-mesh wire mesh, and drying the precipitate at 110° C. for 3 hours; B is the mass of the latex before the dropwise addition (50 g); and C is the solid matter concentration (mass %) of the latex before the dropwise addition. Precipitation   rate   ( % ) = A B × C 100 × 100 ( I )

    摘要翻译： 本发明的目的是提供具有改进的橡胶凝固性的聚氯丁二烯胶乳，其通过浸渍成型获得强度优异的膜，聚氯丁二烯胶乳组合物和模制品。 单独聚合2-氯-1,3-丁二烯或通过至少含有2-氯-1,3-丁二烯和2,3-二氯-1,3-丁二烯的原料单体的聚合制备聚氯丁二烯胶乳，并具有沉淀 速率为5〜40％，按照式（I）计算。 在式（I）中，A是干燥产物的质量（g），其通过在23℃下将50ml饱和氢氧化钙水溶液加入到50g固体物质浓度调节至 在液温23℃，45分钟至65质量％，2分钟内，用80目丝网过滤收集生成的沉淀物，并在110℃下干燥沉淀3小时; B是滴加前胶乳的质量（50g）; C是滴加前的胶乳的固体成分浓度（质量％）。 降水率（％）= A B×C 100×100（I）

    CHLOROPRENE RUBBER COMPOSITION
    5.
    发明申请
    CHLOROPRENE RUBBER COMPOSITION 有权

    公开(公告)号：US20230074258A1

    公开(公告)日：2023-03-09

    申请号：US17799445

    申请日：2021-01-19

    申请人： NOK CORPORATION

    发明人： Shiro HIROSE

    IPC分类号： C08F136/18 ,  C08K5/3492 ,  C08K5/37 ,  C08K5/40

    摘要： A chloroprene rubber composition comprising 0.8 to 4 parts by weight of 2,4,6-trimercapto-s-triazine and 0.5 to 4.5 parts by weight of tetrabenzylthiuram disulfide based on 100 parts by weight of chloroprene rubber. The chloroprene rubber composition maintains processability (scorch time) and productivity (crosslinking rate) equivalent to those of conventionally used crosslinking systems, without using substances subject to environmental regulations in crosslinking systems, and at the same time, improves physical properties, such as strength, elongation, and compression set characteristics.

    SURFACE MODIFICATION METHOD, SURFACE-MODIFIED ELASTIC BODY, GASKET FOR INJECTOR, INJECTOR, AND TIRE
    7.
    发明申请
    SURFACE MODIFICATION METHOD, SURFACE-MODIFIED ELASTIC BODY, GASKET FOR INJECTOR, INJECTOR, AND TIRE 审中-公开
    表面改性方法，表面改性弹性体，注射器，注射器和轮胎用垫片

    公开(公告)号：US20150266984A1

    公开(公告)日：2015-09-24

    申请号：US14730024

    申请日：2015-06-03

    申请人： SUMITOMO RUBBER INDUSTRIES, LTD. ,  KYUSHU UNIVERSITY

    发明人： Yasuhisa MINAGAWA ,  Yasuhiko KONDO ,  Tetsuo MIZOGUCHI ,  Atsushi TAKAHARA ,  Motoyasu KOBAYASHI

    IPC分类号： C08F136/18 ,  A61M5/31 ,  F16J9/26 ,  A61M5/315 ,  B60C1/00 ,  F16J9/28

    CPC分类号： C08F136/18 ,  A61M5/3129 ,  A61M5/31511 ,  A61M5/31513 ,  A61M2005/3131 ,  B60C1/0016 ,  C08F2/38 ,  C08F8/34 ,  C08F293/005 ,  C08F2438/01 ,  C08J3/28 ,  C08J2315/02 ,  F16J9/26 ,  F16J9/28

    摘要： Provided are: surface modification method for imparting slidability to surface of elastic body such as vulcanized rubber or thermoplastic elastomer without using expensive self-lubricating resin; surface-modified elastic body with polymer brush formed on its surface; and gasket for injector and injector formed of surface-modified elastic body. The surface modification method applies to surface of thermoplastic elastomer or vulcanized rubber. The surface modification method comprises the step of forming hydroxyl group on surface of to-be-modified object such as rubber so that water contact angle of the surface becomes 8 to 50 degrees smaller than original water contact angle in unmodified condition, the step of forming polymerization initiation site by subjecting the hydroxyl group to action of secondary or tertiary organic halide, and the step of growing polymer brush on the surface of to-be-modified object by subjecting monomer to radical polymerization at the polymerization initiation site acting as a point of initiation.

    摘要翻译： 提供：在不使用昂贵的自润滑树脂的情况下，赋予弹性体表面如硫化橡胶或热塑性弹性体的滑动性的表面改性方法; 表面改性弹性体，其表面上形成聚合物刷; 以及由表面改性弹性体形成的注射器和注射器的垫圈。 表面改性方法适用于热塑性弹性体或硫化橡胶的表面。 表面改性方法包括在待改性物体如橡胶的表面上形成羟基的步骤，使得表面的水接触角比未改性条件下的原水接触角小8至50度，形成步骤 通过使羟基受到二级或三级有机卤化物的作用的聚合引发位点，以及通过使单体在聚合引发位点处的自由基聚合作为点的位置，在待改性物体的表面上生长聚合物刷的步骤 引发。