SELF-ADHESIVE MILLABLE SILICONE RUBBER COMPOSITION

    公开(公告)号:EP4137545A1

    公开(公告)日:2023-02-22

    申请号:EP21787659.8

    申请日:2021-02-25

    发明人: HOTTA Masakatsu

    摘要: The present invention is an self-adhesive millable silicone rubber composition containing: 100 parts by mass of (A) an organopolysiloxane having at least two alkenyl groups bonded to silicon atoms per molecule and an average polymerization degree of 100 or more; 5 to 50 parts by mass of (B) a reinforcing silica having a specific surface area of 50 m 2 /g or more; 0.1 to 5 parts by mass of (C) an organosilicon compound having an epoxy group and an alkoxy group per molecule; 0.1 to 5 parts by mass of (D) an organosilicon compound having an isocyanate group and an alkoxy group per molecule; and an effective curing amount of (E) a curing agent. The content of an organosilicon compound having a siloxane bond and a benzene ring per molecule is 0 to 0.1 parts by mass, and the content of an organosilicon compound having a siloxane bond and an epoxy group per molecule is 0 to 0.1 parts by mass. This makes it possible to provide a self-adhesive millable silicone rubber composition excellent in productivity and capable of forming a cured product excellent in adhesion.

    CURABLE COMPOSITION
    10.
    发明公开
    CURABLE COMPOSITION 审中-公开

    公开(公告)号:EP4303258A1

    公开(公告)日:2024-01-10

    申请号:EP22763179.3

    申请日:2022-02-28

    发明人: HE, Yuku

    摘要: An embodiment of the present invention relates to a curable composition containing (A) a polyoxyalkylene-based polymer having a silicon-containing reactive group, (B) a (meth)acrylic ester-based polymer having a trialkoxysilyl group, and (C) a specific silane compound having a guanidine group. Because a nonorganotin-based catalyst is used for the curable composition of an embodiment of the present invention, the curable composition has excellent miscibility among the components, tends less to suffer a defect caused by transfer of a catalyst, is excellent in curability and adhesiveness, and, when cured, yields a cured product having excellent mechanical performance.