Patents Assigned to Dow Toray Co., Ltd.
  • Patent number: 11549043
    Abstract: Provided is: a multicomponent curable thermally conductive silicone gel composition which has a high thermal conductivity, has excellent gap-filling ability and repairability, and has superior storage stability; a thermally conductive member comprising the composition; and a heat dissipating structure using the same. The thermally conductive silicone gel composition comprises: (A) an alkenyl group-containing organopolysiloxane; (B) an organohydrogenpolysiloxane; (C) a catalyst for hydrosilylation reaction; (D) a thermally conductive filler; (E) a silane-coupling agent or a hydrolysis condensation product thereof; and (F) a specific organopolysiloxane having a hydrolyzable silyl group at one end thereof.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: January 10, 2023
    Assignee: DOW TORAY CO., LTD.
    Inventors: Kenji Ota, Toyohiko Fujisawa
  • Patent number: 11505703
    Abstract: The present disclosure provides a curable silicone rubber composition containing 0.1 to 15 mass % of a biuret compound represented by the general formula: wherein R1 represents the same or different alkyl groups having 1 to 6 carbons, R2 represents the same or different alkyl groups having 1 to 3 carbons, R3 represents the same or different alkylene groups having 2 to 6 carbons, and “a” represents the same or different integers of from 0 to 2. The curable silicone rubber composition may be cured by a condensation reaction, an addition reaction, or the like. The curable silicone rubber composition generally has good adhesion to plastics, metals, and the like.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: November 22, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventor: Masakazu Irie
  • Patent number: 11492490
    Abstract: A silicone rubber composition is disclosed. The silicone rubber composition comprises: (A) an organosiloxane having at least two alkenyl groups in each molecule; (B) a silica filler; (C) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms in each molecule; (D) a hydrosilylation reaction catalyst; and (F) an adhesion promoter. Component (B) is prepared by surface-treating a silica filler with (E) a surface treatment agent in the presence of part or all of component (A). The silicone rubber composition generally exhibits excellent adhesion to various organic resins in contact during curing while simultaneously exhibiting excellent mold releasability with respect to a mold used for the molding thereof.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: November 8, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Tomoko Tasaki, Takayoshi Otomo
  • Patent number: 11479668
    Abstract: Provided is a curable granular silicone composition which has hot-melt properties, is excellent in terms of handleability and curability in overmolding and the like, and gives cured objects and the like highly inhibited from taking a color at high temperatures. The curable granular silicone composition comprises: (A) organopolysiloxane resin fine particles which do not have hot-melt properties and have a curing-reactive functional group containing a carbon-carbon double bond and in which siloxane units represented by RSiO3/2 (where R is a monovalent organic group) or SiO4/2 account for at least 20 mol % of all the siloxane units; (B) a liquid, linear or branched organopolysiloxane having, in the molecule, at least two curing-reactive functional groups containing a carbon-carbon double bond; (C) a hardener; and (D) a functional filler. The composition as a whole has hot-melt properties. Uses of the curable granular silicone composition are also disclosed.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: October 25, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Ryosuke Yamazaki, Toru Imaizumi, Kouichi Ozaki
  • Patent number: 11479670
    Abstract: A curable organopolysiloxane composition is provided. The composition can be easily processed into a film shape and has a high specific dielectric constant, high dielectric breakdown strength, and a low Young's modulus, allowing for a high energy density to be achieved, in addition to having excellent mechanical strength when used as a dielectric layer in a transducer. A fluoroalkyl group-containing curable organopolysiloxane composition, which can be cured by an addition reaction, comprises: an organopolysiloxane containing an alkenyl group and a fluoroalkyl group; an organohydrogen polysiloxane having SiH at both terminals of a molecular chain but not having a fluoroalkyl group; and a linear fluoroalkyl group-containing organohydrogen polysiloxane or a branched fluoroalkyl group-containing organohydrogen polysiloxane having T units.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: October 25, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Hiroshi Fukui, Kyoko Toyama
  • Patent number: 11414547
    Abstract: An oil containing an oil mist suppressant is provided herein. The oil can be a fiber treatment oil, spinning oil, or textile treatment oil. The oil mist suppressant suppresses the formation of oil mist from the oil during treatment using the oil. In general, the oil mist suppressant will not inhibit the purpose and effects of the oil treatment. A method of reducing oil mist using the oil mist suppressant is also provided herein. The oil mist suppressant is constituted by a silicone fluid composition. The silicone fluid composition is homogeneously miscible with a dimethylpolysiloxane oil having a kinematic viscosity of 10.0 mm2/s at 25° C. The silicone fluid composition also has the property of increasing the maximum lamellar length of the dimethylpolysiloxane oil by at least 5% when 1.0% by mass of the silicone fluid composition is added thereto.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: August 16, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Hiroyuki Inagaki, Keiichi Akinaga, Naoji Kawamura
  • Patent number: 11396616
    Abstract: A liquid curable silicone adhesive composition is provided. The composition is generally storage stable as a one-part composition at room temperature, can primarily cure at room temperature in the presence of moisture, and can secondarily cure at high temperatures, and can form a strong adhesive layer on a substrate or member. The liquid curable silicone adhesive composition comprises: a curable reactive organopolysiloxane which has a radical reactive group and a condensation reactive group in the same molecule or throughout the mixture; a condensation reaction catalyst; an organic peroxide; an adhesion imparting agent; and a crosslinkable silane. Herein, regarding the storage modulus (G?1) of a cured product obtained by primarily curing the composition in the presence of moisture approximately at room temperature, along with the storage elastic modulus (G?2) of a cured pro duct obtained by curing the composition, the increase rate (?) of the storage elastic modulus is at least 50%.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: July 26, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Harumi Kodama, Toyohiko Fujisawa, Yoshito Ushio
  • Patent number: 11390715
    Abstract: Provided is a hydrosilylation reactive composition that can be used to obtain an organopolysiloxane cured product having high adhesiveness and sufficient mechanical strength, and a method for manufacturing a cured product using this composition. The composition comprises: (A) a compound including at least one monovalent hydrocarbon group with an aliphatic unsaturated bond per molecule; (B) a compound including at least two hydrogen atoms bonded to a silicon atom per molecule; (C) a first hydrosilylation catalyst; and (D) a second hydrosilylation catalyst including platinum, rhodium, ruthenium, or iridium and exhibiting activity at a temperature at least 30° C. higher than the temperature at which component (C) exhibits activity. Also provided is a method for conducting a hydrosilylation reaction at two different temperature levels using this composition.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: July 19, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventor: Makoto Yoshitake
  • Patent number: 11390746
    Abstract: The present disclosure relates to a light curable, light-heat or light-moisture dually curable, or light-heat-moisture multiple curable polyorganosiloxane composition, which has ease of synthesis, low volatile content, rapid curability, excellent toughness and/or superior optical/physical stability in a variety of fields such as coating materials, encapsulants, sealants and adhesives, a cured body obtained by curing said compositions, and an electronic device comprising the same.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: July 19, 2022
    Assignees: Dow Silicones Corporation, Dow Toray Co., Ltd.
    Inventors: Takuya Ogawa, Yungjin Park, Juyoung Yook
  • Patent number: 11384244
    Abstract: Provided are a curable organopolysiloxane composition, and a pattern forming method using the curable organopolysiloxane composition. The curable organopolysiloxane composition generally has hydrosilylation reaction curing properties, may be precisely applied using, for example, a jet dispenser, and has a viscosity at a strain rate of 1,000 (1/s) of 2.0 Pa·s or less, and a viscosity at a strain rate of 0.1 (1/s) of at least 50.0 times the viscosity at a strain rate of 1,000 (1/s). The curable organopolysiloxane composition has rheological properties suitable for precision application and micropattern formation using a microdroplet coating device such as a jet dispenser.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: July 12, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventor: Manabu Sutoh
  • Patent number: 11332855
    Abstract: A heat resistant reinforcing cloth for an airbag is provided. The heat resistant reinforcing cloth can be disposed on an airbag part which contacts expansion gas in an airbag. The airbag can be deployed and expanded by expansion gas ejected from an inflator. The heat resistant reinforcing cloth comprises: a base fabric of natural fibers selected from the group consisting of cotton, hemp, flax, and combinations thereof; and a silicone rubber layer on both sides of the base fabric.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: May 17, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventor: Tsugio Nozoe
  • Patent number: 11319412
    Abstract: A single-fluid curable thermally conductive silicone grease composition having long-term storage stability at room temperature is provided. The single-fluid curable thermally conductive silicone grease comprises: an organopolysiloxane, having an aliphatic unsaturated hydrocarbon group per single molecule, with a viscosity at 25° C. between 50 and 100,000 mPa·s; an organohydrogen siloxane that includes hydrogen atoms bonded to at least two silicon atoms per single molecule; a thermally conductive filler that includes particle diameters with an average particle diameter between 0.01 and 200 ?m; a microparticle catalyst, with an average particle diameter of between 0.01 and 10 ?m, comprising a thermoplastic resin with a softening point between 40° C. and 200° C., wherein a platinum-based catalyst is included at no less than 0.01 mass %, as platinum metal atoms; and a curing control agent. The complex modulus of elasticity after curing of the composition is between 0.01 MPa and 20 MPa at 25° C.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: May 3, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Tomoko Kato, Toyohiko Fujisawa, Harumi Kodama, Masayuki Onishi
  • Patent number: 11279827
    Abstract: A curing reactive silicone gel is provided. The curing reactive silicone gel is obtained by primarily curing a composition containing the following components in a gel form and further having secondarily curing reactivity. (A) an organopolysiloxane having at least two curing reactive groups in one molecule; (B) optionally, an organohydrogenpolysiloxane; and (C) a curing agent.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: March 22, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Hiroshi Fukui, Kyoko Toyama, Ryota Dogen, Yoshito Ushio
  • Patent number: 11254843
    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.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: February 22, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Takakazu Hino, Akihiro Nakamura, Michitaka Suto, Hidefumi Tanaka
  • Patent number: 11248091
    Abstract: A curable silicone composition is disclosed. The curable silicone composition comprises: (A) a linear organopolysiloxane having at least two silicon atom-bonded alkenyl groups per molecule, wherein at least 5 mole % of all silicon atom-bonded organic groups are aryl groups; (B) an organopolysiloxane containing siloxane units represented by the general formula R13SiO1/2 where each R1 represents an independently selected monovalent hydrocarbon group, and siloxane units represented by the general formula SiO4/2, wherein the amount of alkenyl groups is at least 6% by weight; (C) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule; and (D) a hydrosilylation reaction catalyst. The curable silicone composition forms a cured product with little weight reduction, little change in hardness, and little crack generation after thermal aging.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: February 15, 2022
    Assignee: DOW TORAY CO., LTD.
    Inventors: Akito Hayashi, Tomohiro Iimura
  • Patent number: 11180595
    Abstract: A copolymer having excellent water resistance and sebum resistance while also exhibiting high washability is provided. Also provided is a composition and cosmetic material containing the copolymer. The copolymer is generally polymerized from a monomer composition comprising: (A) a carbosiloxane dendrimer monomer having a radically polymerizable organic group; and (B) an unsaturated monomer having at least one acidic group or a salt thereof per molecule; wherein monomer (A) is present in the monomer composition in an amount greater than or equal to 30 wt. % relative to the weight of the monomer composition, and a weight ratio (A/B) of monomer (A) to monomer (B) is from 1.0 to 20.0.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: November 23, 2021
    Assignee: DOW TORAY CO., LTD.
    Inventors: Tatsuo Souda, Sayuri Kikunaga, Seiji Hori
  • Patent number: 11136437
    Abstract: Provided is a curable particulate silicone composition that is hot-meltable, has excellent handling workability, curing properties, and gap fill properties when melted, and gives a cured product having excellent flexibility and resilience from room temperature to high temperatures of about 150° C. Also provided are pellets or the like formed by molding the curable particulate silicone composition. The curable particulate silicone composition comprises: (A) hot-meltable silicone particles that have a softening point of 30° C. or higher and have a hydrosilylatable group and/or a radical reactive group; (B) an inorganic filler (particulates) that is substantially free of coarse particles having an average particle diameter of 10.0 ?m or larger; and (C) a curing agent. When cured, the composition gives a cured product having a storage modulus of 2000 Mpa or lower at 25° C. and of 100 Mpa or lower at 150° C.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: October 5, 2021
    Assignee: DOW TORAY CO., LTD.
    Inventor: Ryosuke Yamazaki
  • Patent number: 11091636
    Abstract: Disclosed is a liquid silicone composition for transfer- or injection-molding optical parts. The liquid silicone composition comprises: (A) a linear organopolysiloxane having in a molecule at least two silicon-bonded C2-10 alkenyl groups and at least one silicon-bonded C6-20 aryl group; (B) an organopolysiloxane resin represented by a specific average unit formula; (C) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule; (D) a hydrosilylation reaction catalyst; and (E) a hydrosilylation reaction inhibitor.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: August 17, 2021
    Assignees: DOW SILICONES CORPORATION, DOW TORAY CO., LTD.
    Inventors: Jong-Chan Park, Min-Hee Kwon, Yutaka Oka
  • Patent number: 11066534
    Abstract: Provided is a polyether-modified silicone composition. The composition comprises (A) a polyether-modified silicone, and (B) a monool organic compound. The monool organic compound (B) is selected from (B1) a glycol ether compound having a hydrogen atom substituted by an alkyl group having from 2 to 8 carbon atoms at one end, a secondary alcoholic hydroxy group at the other end, from 2 to 3 repeating oxyalkylene units having from 2 to 4 carbon atoms, and (B2) a tripropylene glycol monomethyl ether. Isopropyl alcohol does not exceed 1 mass % of the entire composition. Applications and manufacturing methods for the composition are also provided.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: July 20, 2021
    Assignee: DOW TORAY CO., LTD.
    Inventors: Son Thanh Phan, Seiki Tamura, Hiroyuki Inagaki, Ikutaro Morikawa
  • Patent number: 11058610
    Abstract: A treatment agent for a cosmetic powder is provided. The treatment agent contains a reactive organosiloxane represented by the following general formula (1) as a main ingredient: In general formula (1): each R1 is independently an alkyl group having 1 to 30 carbon atoms; each R2 is independently an alkyl group having 1 to 20 carbon atoms; R3 is a divalent alkylene group; n is an integer of 1 to 200; and p is an integer of 1 to 3. The treatment agent for a cosmetic powder of this disclosure is capable of imparting excellent lipophilicity. A cosmetic raw material having cosmetic effect and giving an excellent feeling of use, and a cosmetic are also provided.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: July 13, 2021
    Assignee: Dow Toray Co., Ltd.
    Inventors: Seiji Hori, Yasue Kanzaki, Sayuri Kikunaga, Norihisa Kishimoto