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    RUBBER-BASED COMPOSITION IMPROVING AGENT, VULCANIZATE OF RUBBER COMPOSITION TO WHICH IMPROVING AGENT IS ADDED, AND MOLDED ARTICLE
    1.
    发明公开
    RUBBER-BASED COMPOSITION IMPROVING AGENT, VULCANIZATE OF RUBBER COMPOSITION TO WHICH IMPROVING AGENT IS ADDED, AND MOLDED ARTICLE 审中-公开

    公开(公告)号：EP3378893A1

    公开(公告)日：2018-09-26

    申请号：EP16866284.9

    申请日：2016-11-15

    申请人： Denka Company Limited

    发明人： KOBAYASHI Naoki ,  ABE Yasushi

    IPC分类号： C08L11/00 ,  C08K3/04 ,  C08K3/06 ,  C08K3/22 ,  C08K5/09 ,  C08K5/10 ,  C08K5/13 ,  C08K5/18 ,  C08K5/3445 ,  C08K5/524 ,  C08L23/04

    摘要： Provided are a rubber-based composition modifier that gives a vulcanizate superior in heat resistance and ozone resistance and a vulcanizate and a molded product of a rubber composition containing the modifier. The rubber-based composition modifier comprises 100 parts by mass of a mixed rubber component containing a chloroprene rubber and at least one copolymer selected from ethylene/α-olefin copolymers and ethylene/α-olefin/unconjugated polyene copolymers, 10 to 60 parts by mass of magnesium oxide, 3 to 30 parts by mass of a softener, and 30 to 120 parts by mass of acetylene black, wherein: the mixed rubber component has a Mooney viscosity, as determined by the method specified in JIS K6300, of 60 to 180 at 100°C; the magnesium oxide has a BET specific surface area, as determined by the one point method specified in JIS Z8830, of 20 to 150 m 2 /g; the softener contains a fatty acid ester-based plasticizer and an unsaturated fatty acid having a carbon number of 10 to 24 and containing an ester bond, a hydroxyl group, or both of them in part of the structure; and the acetylene black has a nitrogen adsorption specific surface area (N 2 SA), as determined by the method specified in JIS K6217-2, of 50 to 160 m 2 /g.

    VULCANIZATE AND PROCESS FOR PRODUCING SAME
    3.
    发明授权
    VULCANIZATE AND PROCESS FOR PRODUCING SAME 有权
    硫化和生产相同的方法

    公开(公告)号：EP2837478B1

    公开(公告)日：2017-07-26

    申请号：EP12873939.8

    申请日：2012-11-27

    申请人： Denka Company Limited ,  National University Corporation Nagaoka University of Technology

    发明人： ISONO Yoshinobu ,  KOBAYASHI Naoki ,  ABE Yasushi

    IPC分类号： B29C35/02 ,  B29K21/00 ,  B29K105/24

    CPC分类号： C08K3/04 ,  B29C35/02 ,  B29K2011/00 ,  C08L11/00

    摘要： Provided are a vulcanizate of a chloroprene rubber composition containing carbon black that generates a smaller amount of heat when used and a method for producing the same by a simpler and more convenient method. First, an unvulcanized rubber composition at least containing a chloroprene polymer and carbon black is vulcanization-molded, to give a semivulcanized molded article having a cure characteristic value, as determined by the method specified in JIS K6300-2: 2001, in the range of t 10 to t 80 . Then, the semivulcanized molded article obtained by semivulcanized film-forming step is additionally vulcanized in the state as it is deformed entirely and the deformation is removed, to give vulcanizate in a desired shape.

    摘要翻译： 本发明提供一种含有炭黑的氯丁橡胶组合物的硫化物，该炭黑在使用时产生较少量的热，并且提供了一种通过更简单和更方便的方法制造该炭黑的方法。 首先，将至少含有氯丁二烯聚合物和炭黑的未硫化橡胶组合物硫化成型，得到具有根据JIS K6300-2：2001规定的方法测定的硫化特性值的半硫化成型制品，其范围为 t 10至t 80。 然后，将通过半硫化成膜工序得到的半硫化成型体完全变形，除去变形后的状态进一步硫化，得到所需形状的硫化橡胶。