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    Adhesive film
    1.
    发明授权
    Adhesive film 有权

    公开(公告)号：US11254843B2

    公开(公告)日：2022-02-22

    申请号：US16971700

    申请日：2019-01-22

    Applicant: DOW TORAY CO., LTD.

    Inventor： Takakazu Hino ,  Akihiro Nakamura ,  Michitaka Suto ,  Hidefumi Tanaka

    IPC: C09J7/38 ,  C09J7/25

    Abstract: Disclosed is an adhesive film. The adhesive film has a silicone adhesive layer on one surface or both surfaces of a substrate film. A silicone adhesive material is used to form the silicone adhesive layer. The silicone adhesive material has 120 to 380% of an elongation at break (tensile speed of 300 mm/min, temperature of 25° C.) specified in JIS K 6251, and 1.8×105 to 4.5×105 Pa of a shear storage modulus (frequency of 10 Hz, temperature of 25° C.). The adhesive film generally has good wettability to the surface of an adherend and in general can be easily attached without creating air bubbles, to the extent that, even if air bubbles are created, the air bubbles can be easily dissipated. Further, even though the adhesive film is generally not easily peeled, peeling is generally possible with a small adhesive force during high speed peeling.

    Organopolysiloxane composition for forming pressure sensitive adhesive layer, and use of same
    4.
    发明授权
    Organopolysiloxane composition for forming pressure sensitive adhesive layer, and use of same 有权

    公开(公告)号：US12173197B2

    公开(公告)日：2024-12-24

    申请号：US17267367

    申请日：2019-08-13

    Applicant: DOW TORAY CO., LTD.

    Inventor： Maki Itoh ,  Akihiro Nakamura ,  Michitaka Suto

    IPC: C09J183/06 ,  B01J23/42 ,  C09J7/38 ,  H04R31/00

    Abstract: A curable organopolysiloxane composition is provided which forms a pressure sensitive adhesive (PSA) layer having a relatively low storage elastic modulus (G′) at low temperatures, excellent curability, and sufficient adhesion for practical use. A PSA layer-forming organopolysiloxane composition comprises: (A) a chain organopolysiloxane having alkenyl groups; (B) an organopolysiloxane resin which has a content of 9 moles or less of hydroxyl groups and the like is a mixture of (b1) an organopolysiloxane resin having a weight average molecular weight (Mw) of 4500 or more and (b2) an organopolysiloxane resin having a Mw of less than 4500; (C) an organohydrogenpolysiloxane; and (D) a hydrosilylation reaction catalyst. The mass ratio of component (B) to component (A) is within a range of 0.9 to 2.0, and the shear storage elastic modulus G′ at −20° C. of a PSA layer obtained by curing the composition is within a range of 0.01 to 0.75 MPa.

    Curable silicone composition, cured product thereof, and optical display
    9.
    发明授权
    Curable silicone composition, cured product thereof, and optical display 有权

    公开(公告)号：US11053417B2

    公开(公告)日：2021-07-06

    申请号：US16490284

    申请日：2018-02-28

    Applicant: DOW TORAY CO., LTD.

    Inventor： Takuya Ogawa ,  Haruna Mizuno ,  Atsushi Sugie ,  Makoto Yoshitake ,  Michitaka Suto

    IPC: C08G77/04 ,  C09J183/12 ,  C09J7/38 ,  C08G77/46 ,  G02B1/04 ,  C08G77/00 ,  C08L83/12

    Abstract: Disclosed is a curable silicone composition. The composition comprises: (A) an organopolysiloxane having at least two alkenyl groups and at least one aryl group in each molecule; (B) a polyoxyalkylene compound represented by the general formula: XO—(C2H4O)p(CnH2nO)q(YO)r—X, wherein, each X represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an acryl group, or a methacryl group, provided that at least one X in each molecule is the alkenyl group, the acryl group, or the methacryl group, Y represents a divalent hydrocarbon group, n represents an integer of 3 to 6, p and q are integers satisfying: 2≤p≤100 and 0≤q≤50, and r represents 0 or 1; (C) an organopolysiloxane having at least two silicon bonded hydrogen atoms in each molecule; and (D) a catalyst for a hydrosilylation reaction. The composition forms a cured product having improved properties.

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