CROSSLINKABLE ACRYLIC RUBBER COMPOSITION
    1.
    发明公开

    公开(公告)号:EP4389822A1

    公开(公告)日:2024-06-26

    申请号:EP22858156.7

    申请日:2022-06-17

    发明人: SAITO, Satoru

    摘要: A crosslinkable acrylic rubber composition comprising:
    (A) acrylic rubber containing a carbamic acid ester group and a carboxyl group;
    (B) a phenothiazine-based antioxidant represented by the following general formula [I]:

    [wherein R3 is a hydrogen atom, a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, or an acyl group represented by the following general formula:

    (wherein R4 is a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms), and R5 is an aralkyl group having 7 to 20 carbon atoms]; and
    (C) a crosslinking accelerator. The crosslinkable acrylic rubber composition that can suppress significant softening degradation of an acrylic rubber crosslinked product observed in the early stage of thermal oxidative degradation and hardening degradation observed in the later stage thereof, and that can minimize the decrease in its mechanical strength.

    THERMOSETTING SILICONE RESIN COMPOSITION CONTAINING BORON NITRIDE, DISPERSANT FOR SILICONE RESIN COMPOSITIONS, AND INORGANIC FILLER
    9.
    发明公开
    THERMOSETTING SILICONE RESIN COMPOSITION CONTAINING BORON NITRIDE, DISPERSANT FOR SILICONE RESIN COMPOSITIONS, AND INORGANIC FILLER 审中-公开
    含硼氮化物的热固性有机硅树脂组合物,有机硅树脂组合物的分散剂和无机填料

    公开(公告)号:EP3318605A1

    公开(公告)日:2018-05-09

    申请号:EP16817583.4

    申请日:2016-05-18

    申请人: Showa Denko K.K.

    IPC分类号: C08L83/04 C08K3/38 C08L33/04

    摘要: The present invention provides: 1) a silicone resin composition, containing: a thermosetting silicone resin; an inorganic substance; and a dispersant, in which: the dispersant includes a copolymer of a (meth)acrylic acid ester having at least one polydimethylsiloxane structure and a (meth)acrylic acid alkyl ester; and the inorganic substance is boron nitride or a mixture of the boron nitride and an inorganic substance except the boron nitride; 2) a dispersant for a boron nitride-containing silicone resin composition, comprising the above-mentioned copolymer; and 3) an inorganic filler, comprising boron nitride or a mixture of the boron nitride and an inorganic substance except the boron nitride. The silicone resin composition of the present invention has a low viscosity and has stability against a mechanochemical treatment.

    摘要翻译: 本发明提供:1)有机硅树脂组合物,其包含:热固性有机硅树脂; 无机物质; 和分散剂,其中:分散剂包括具有至少一个聚二甲基硅氧烷结构的(甲基)丙烯酸酯和(甲基)丙烯酸烷基酯的共聚物; 并且所述无机物质是氮化硼或所述氮化硼与除所述氮化硼之外的无机物质的混合物; 2)含有氮化硼的有机硅树脂组合物用分散剂,其含有上述共聚物; 和3)无机填料,其包含氮化硼或氮化硼与除了氮化硼之外的无机物质的混合物。 本发明的有机硅树脂组合物具有低粘度并且对机械化学处理具有稳定性。