Patents by Inventor Takato Sakurai
Takato Sakurai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10899952Abstract: An automotive engine coolant composition includes: a non-silicone surfactant; an anti-foaming agent containing a mineral oil and silica; and a base, in which the base includes at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether and/or water, a kinematic viscosity is 8.5 mm2/s or more at 25° C. and 2.0 mm2/s or less at 100° C., and with respect to 100 parts by mass of the coolant composition, a content of the mineral oil is 0.01 to 0.4 parts by mass and a content of the silica is 0.003 to 0.1 parts by mass.Type: GrantFiled: June 20, 2017Date of Patent: January 26, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuaki Kodama, Tomoyuki Nakano, Takato Sakurai, Kazuhito Yaeda, Yoichiro Yoshii, Yosuke Kishino, Masayuki Nagasawa, Shogo Kamenoue
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Patent number: 10765970Abstract: The present invention relates to a defoamer oil compound that contains an organopolysiloxane (A), a fine silica powder (B), and a group (C) that is represented by the organopolysiloxanes of formulas (I) and/or (II) (in the formulas, c, d, and e are each an integer of 0 or more, and at least one of X1 to X3 is the group represented by formula (i)). The component (C) is used as a surface treatment agent for the component (B). The present invention makes it possible to obtain a silicone-based defoamer composition that imparts good initial defoaming properties even in an alkaline foaming liquid, that exhibits very little loss in performance over time, and that has excellent defoaming performance.Type: GrantFiled: August 27, 2018Date of Patent: September 8, 2020Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Akihiro Kobayashi, Chinami Matsui, Takato Sakurai, Shunji Aoki
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Publication number: 20190177591Abstract: An automotive engine coolant composition includes: a non-silicone surfactant; an anti-foaming agent containing a mineral oil and silica; and a base, in which the base includes at least one alcohol selected from the group consisting of a monohydric alcohol, a dihydric alcohol, a trihydric alcohol, and a glycol monoalkyl ether and/or water, a kinematic viscosity is 8.5 mm2/s or more at 25° C. and 2.0 mm2/s or less at 100° C., and with respect to 100 parts by mass of the coolant composition, a content of the mineral oil is 0.01 to 0.4 parts by mass and a content of the silica is 0.003 to 0.1 parts by mass.Type: ApplicationFiled: June 20, 2017Publication date: June 13, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Shin-Etsu Chemical Co., Ltd.Inventors: Yasuaki KODAMA, Tomoyuki NAKANO, Takato SAKURAI, Kazuhito YAEDA, Yoichiro YOSHII, Yosuke KISHINO, Masayuki NAGASAWA, Shogo KAMENOUE
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Patent number: 10232288Abstract: The present invention relates to a defoamer oil compound that contains an organopolysiloxane (A), a fine silica powder (B), and a group (C) that is represented by the organopolysiloxanes of formulas (I) and/or (II) (in the formulas, c, d, and e are each an integer of 0 or more, and at least one of X1 to X3 is the group represented by formula (i)). The component (C) is used as a surface treatment agent for the component (B). The present invention makes it possible to obtain a silicone-based defoamer composition that imparts good initial defoaming properties even in an alkaline foaming liquid, that exhibits very little loss in performance over time, and that has excellent defoaming performance.Type: GrantFiled: July 24, 2015Date of Patent: March 19, 2019Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Akihiro Kobayashi, Chinami Matsui, Takato Sakurai, Shunji Aoki
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COOLANT COMPOSITION FOR AUTOMOBILE ENGINE AND CONCENTRATED COOLANT COMPOSITION FOR AUTOMOBILE ENGINE
Publication number: 20190031938Abstract: This invention provides a coolant composition for an automobile engine which achieves retained thickening effects of a surfactant as a viscosity, and a concentrated coolant composition for an automobile engine used to obtain such coolant composition. Such coolant composition for an automobile engine comprises: (A) a silicone-based oil compound; (B) polyether-modified silicone; (C) a non-silicone-based surfactant; and (D) an aqueous base, wherein the silicone-based oil compound (A) comprises: (A1) at least one selected from among organopolysiloxanes represented by General Formula (1); and (A2) a filler, and the polyether-modified silicone (B) is at least one member selected from among polyoxyalkylene-modified organopolysiloxanes represented by General Formula (2).Type: ApplicationFiled: January 23, 2017Publication date: January 31, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SHIN-ETSU CHEMICAL CO., LTD.Inventors: Yasuaki KODAMA, Takato SAKURAI, Kazuhito YAEDA, Yoichiro YOSHII, Ryota MAKINO, Masayuki NAGASAWA -
Publication number: 20180361274Abstract: The present invention relates to a defoamer oil compound that contains an organopolysiloxane (A), a fine silica powder (B), and a group (C) that is represented by the organopolysiloxanes of formulas (I) and/or (II) (in the formulas, c, d, and e are each an integer of 0 or more, and at least one of X1 to X3 is the group represented by formula (i)). The component (C) is used as a surface treatment agent for the component (B). The present invention makes it possible to obtain a silicone-based defoamer composition that imparts good initial defoaming properties even in an alkaline foaming liquid, that exhibits very little loss in performance over time, and that has excellent defoaming performance.Type: ApplicationFiled: August 27, 2018Publication date: December 20, 2018Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Akihiro KOBAYASHI, Chinami Matsui, Takato Sakurai, Shunji Aoki
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Patent number: 9777121Abstract: Provided are a Gemini-type alkyl-polyoxyalkylene-modified silicone suitable for use in preparing a silicone emulsion; a production method of thereof; and a defoaming agent composition containing such Gemini-type alkyl-polyoxyalkylene-modified silicone. The Gemini-type alkyl-polyoxyalkylene-modified silicone is expressed by the following general formula (A): wherein each of R1, R2, R3, R4, R5 and R6 represents an alkyl group or the like; n represents an integer of 0 to 300; and (B) represents a group expressed by the following general formula (1) or general formula (2): wherein each of R7 and X represents a hydrocarbon group; R8 represents a hydrogen atom, a hydrocarbon group, a formyl group or an acyl group; and a and b represent numbers satisfying 2?a?200 and 0?b?200, provided that a+b=2 to 200.Type: GrantFiled: October 23, 2014Date of Patent: October 3, 2017Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Takato Sakurai
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Patent number: 9719050Abstract: The present application relates to anti-foam compositions and methods of making and using such compositions as well as consumer products that comprise such compositions and the use of same. Such anti-foam compositions have low viscosities yet are effective antifoamers.Type: GrantFiled: February 26, 2015Date of Patent: August 1, 2017Assignee: The Procter & Gamble CompanyInventors: Rajan Keshav Panandiker, Bernard William Kluesener, Rebecca Ann Langevin, Sherri Lynn Randall, Takato Sakurai, Hiroyuki Moriya, Akihiro Kobayashi
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Publication number: 20170209813Abstract: The present invention relates to a defoamer oil compound that contains an organopolysiloxane (A), a fine silica powder (B), and a group (C) that is represented by the organopolysiloxanes of formulas (I) and/or (II) (in the formulas, c, d, and e are each an integer of 0 or more, and at least one of X1 to X3 is the group represented by formula (i)). The component (C) is used as a surface treatment agent for the component (B). The present invention makes it possible to obtain a silicone-based defoamer composition that imparts good initial defoaming properties even in an alkaline foaming liquid, that exhibits very little loss in performance over time, and that has excellent defoaming performance.Type: ApplicationFiled: July 24, 2015Publication date: July 27, 2017Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Akihiro KOBAYASHI, Chinami MATSUI, Takato SAKURAI, Shunji AOKI
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Publication number: 20160311982Abstract: Provided are a Gemini-type alkyl-polyoxyalkylene-modified silicone suitable for use in preparing a silicone emulsion; a production method of thereof; and a defoaming agent composition containing such Gemini-type alkyl-polyoxyalkylene-modified silicone. The Gemini-type alkyl-polyoxyalkylene-modified silicone is expressed by the following general formula (A): wherein each of R1, R2, R3, R4, R5 and R6 represents an alkyl group or the like; n represents an integer of 0 to 300; and (B) represents a group expressed by the following general formula (1) or general formula (2): wherein each of R7 and X represents a hydrocarbon group; R8 represents a hydrogen atom, a hydrocarbon group, a formyl group or an acyl group; and a and b represent numbers satisfying 2?a?200 and 0?b?200, provided that a+b=2 to 200.Type: ApplicationFiled: October 23, 2014Publication date: October 27, 2016Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventor: Takato SAKURAI
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Patent number: 9404068Abstract: The present application relates to anti-foam compositions and methods of making and using such compositions as well as consumer products that comprise such compositions and the use of same. Such anti-foam compositions have low viscosities yet are effective antifoamers.Type: GrantFiled: February 26, 2015Date of Patent: August 2, 2016Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Takato Sakurai, Hiroyuki Moriya, Akihiro Kobayashi, Rajan Keshav Panandiker, Bernard William Kluesener, Rebecca Ann Langevin, Sherri Lynn Randall
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Patent number: 9278298Abstract: An oil compound used for defoaming includes (A) a substantially hydrophobic organopolysiloxane having a viscosity of 10 to 100,000 mm2/second at 25° C., and (B) finely divided silica that has undergone surface hydrophobization treatment, wherein when an insoluble matter is collected from the oil compound by using hexane and the spectra of the insoluble matter are measured by 29Si-CP/MAS-NMR, the peaks of the silica due to the SiO4/2 (Q) units on the silica surface are such that a ratio [(Q2+Q3)/Q4] between a total area (Q2+Q3) wherein Q2 is a peak area of a silicon atom having two unreacted silanol groups and Q3 is a peak area of a silicon atom having one unreacted silanol group and an area Q4 wherein Q4 is a peak area of a silicon atom having no unreacted silanol group is at 70/30 to 20/80.Type: GrantFiled: March 29, 2012Date of Patent: March 8, 2016Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Kazuyuki Takewaki, Chinami Matsui, Takato Sakurai
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Patent number: 9272232Abstract: Disclosed is a powder antifoaming agent containing: (A) a hydrophobic organopolysiloxane that has a viscosity at 25° C. of 10-100,000 mm2/s; (B) a fine silica powder; (C) a surfactant; and (D) a water-soluble encapsulating agent that is in a solid state at 25° C. This powder antifoaming agent is characterized by being obtained by spray drying a dispersion liquid that is obtained by dispersing a silicone oil compound, which is obtained by mixing the component (A) and the component (B), and the component (D) in water in the presence of the component (C), and is also characterized in that the silicone oil compound is encapsulated by the component (D) that serves as an outer shell. Since the present powder antifoaming agent does not contain water by being produced by a spray drying method, the powder antifoaming agent is free from problems of emulsion antifoaming agents such as separation and putrefaction.Type: GrantFiled: October 18, 2012Date of Patent: March 1, 2016Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takato Sakurai, Shinji Irifune
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Publication number: 20150240190Abstract: The present application relates to anti-foam compositions and methods of making and using such compositions as well as consumer products that comprise such compositions and the use of same. Such anti-foam compositions have low viscosities yet are effective antifoamers.Type: ApplicationFiled: February 26, 2015Publication date: August 27, 2015Inventors: Takato SAKURAI, Hiroyuki MORIYA, Akihiro KOBAYASHI, Rajan Keshav PANANDIKER, Bernard William KLUESENER, Rebecca Ann LANGEVIN, Sherri Lynn RANDALL
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Publication number: 20150240189Abstract: The present application relates to anti-foam compositions and methods of making and using such compositions as well as consumer products that comprise such compositions and the use of same. Such anti-foam compositions have low viscosities yet are effective antifoamers.Type: ApplicationFiled: February 26, 2015Publication date: August 27, 2015Inventors: Rajan Keshav PANANDIKER, Bernard William KLUESENER, Rebecca Ann LANGEVIN, Sherri Lynn RANDALL, Takato SAKURAI, Hiroyuki MORIYA, Akihiro KOBAYASHI
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Publication number: 20140336284Abstract: Disclosed is a powder antifoaming agent containing: (A) a hydrophobic organopolysiloxane that has a viscosity at 25° C. of 10-100,000 mm2/s; (B) a fine silica powder; (C) a surfactant; and (D) a water-soluble encapsulating agent that is in a solid state at 25° C. This powder antifoaming agent is characterized by being obtained by spray drying a dispersion liquid that is obtained by dispersing a silicone oil compound, which is obtained by mixing the component (A) and the component (B), and the component (D) in water in the presence of the component (C), and is also characterized in that the silicone oil compound is encapsulated by the component (D) that serves as an outer shell. Since the present powder antifoaming agent does not contain water by being produced by a spray drying method, the powder antifoaming agent is free from problems of emulsion antifoaming agents such as separation and putrefaction.Type: ApplicationFiled: October 18, 2012Publication date: November 13, 2014Inventors: Takato Sakurai, Shinji Irifune
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Patent number: 8715905Abstract: Provided is a silphenylene-containing photocurable composition including: (A) a specific silphenylene having both terminals modified with alicyclic epoxy groups, and (C) a photoacid generator that generates acid upon irradiation with light having a wavelength of 240 to 500 nm. Also provided is a pattern formation method including: (i) forming a film of the photocurable composition on a substrate, (ii) exposing the film through a photomask with light having a wavelength of 240 to 500 nm, and if necessary, performing heating following the exposure, and (iii) developing the film in a developing liquid, and if necessary, performing post-curing at a temperature within a range from 120 to 300° C. following the developing. Further provided is an optical semiconductor element obtained by performing pattern formation using the method.Type: GrantFiled: September 6, 2013Date of Patent: May 6, 2014Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shohei Tagami, Takato Sakurai, Hideto Kato
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Publication number: 20140011126Abstract: Provided is a silphenylene-containing photocurable composition including: (A) a specific silphenylene having both terminals modified with alicyclic epoxy groups, and (C) a photoacid generator that generates acid upon irradiation with light having a wavelength of 240 to 500 nm. Also provided is a pattern formation method including: (i) forming a film of the photocurable composition on a substrate, (ii) exposing the film through a photomask with light having a wavelength of 240 to 500 nm, and if necessary, performing heating following the exposure, and (iii) developing the film in a developing liquid, and if necessary, performing post-curing at a temperature within a range from 120 to 300° C. following the developing. Further provided is an optical semiconductor element obtained by performing pattern formation using the method.Type: ApplicationFiled: September 6, 2013Publication date: January 9, 2014Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Shohei Tagami, Takato Sakurai, Hideto Kato
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Patent number: 8476379Abstract: There is disclosed a silphenylene skeleton-containing silicone type polymer comprising a repeating unit represented by the following general formula (1) and having a weight average molecular weight of 5,000 to 40,000. There can be a novel silphenylene skeleton-containing silicone type polymer which enables to satisfy both chemical resistance and adhesiveness to a substrate and can be used as a material for a thermosetting resin for forming coatings for protecting substrates, circuits, and interconnections; and a method for manufacturing the same.Type: GrantFiled: April 27, 2011Date of Patent: July 2, 2013Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroyuki Yasuda, Takato Sakurai, Takanobu Takeda, Hideto Kato
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Patent number: 8378148Abstract: Bisphenol derivatives having both alcoholic hydroxyl and allyl groups are novel and useful as reagents for modifying organic resins and silicone resins.Type: GrantFiled: October 5, 2010Date of Patent: February 19, 2013Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takato Sakurai, Michihiro Sugo, Takanobu Takeda, Hideto Kato