Patents by Inventor Toyoaki Kurihara
Toyoaki Kurihara 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: 9527994Abstract: An object of the present invention is to provide a methacrylic resin composition which exhibits excellent flexibility, elasticity, impact resistance, and plasticity and moldability while transparency inherent to methacrylic resins is maintained. A methacrylic resin composition to be produced is composed of 10 to 99 parts by mass of a methacrylic resin (A) containing not less than 80 mass % of a methyl methacrylate unit and 90 to 1 part by mass of a block copolymer (B) containing 10 to 60 mass % of a methyl methacrylate polymer block (b1) and 90 to 40 mass % of an acrylate polymer block (b2) and having a refractive index of 1.485 to 1.495 (the total of (A) and (B) is 100 parts by mass).Type: GrantFiled: October 24, 2011Date of Patent: December 27, 2016Assignee: KURARAY CO., LTD.Inventors: Hiroshi Ozawa, Toru Takahashi, Atsushi Matsumura, Kenichi Hamada, Yoshihiro Morishita, Toyoaki Kurihara
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Patent number: 9192913Abstract: An object of the present invention is to provide an adsorbent material having excellent gas storage performance and gas separation performance. This object can be achieved by an adsorbent material comprising a composition comprising a metal complex (A) and an elastomer (B), the metal complex (A) containing an anionic ligand and at least one metal ion selected from ions of metals belonging to Groups 1 to 13 of the periodic table, the metal complex (A) being capable of undergoing a volume change upon adsorption, and the mass ratio of the metal complex (A) and the elastomer (B) being within the range of 1:99 to 99:1.Type: GrantFiled: September 4, 2012Date of Patent: November 24, 2015Assignee: KURARAY CO., LTD.Inventors: Yasutaka Inubushi, Takashi Hori, Toyoaki Kurihara, Hiroyuki Ogi
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Publication number: 20140224120Abstract: An object of the present invention is to provide an adsorbent material having excellent gas storage performance and gas separation performance. This object can be achieved by an adsorbent material comprising a composition comprising a metal complex (A) and an elastomer (B), the metal complex (A) containing an anionic ligand and at least one metal ion selected from ions of metals belonging to Groups 1 to 13 of the periodic table, the metal complex (A) being capable of undergoing a volume change upon adsorption, and the mass ratio of the metal complex (A) and the elastomer (B) being within the range of 1:99 to 99:1.Type: ApplicationFiled: September 4, 2012Publication date: August 14, 2014Applicant: KURARAY CO., LTD.Inventors: Yasutaka Inubushi, Takashi Hori, Toyoaki Kurihara, Hiroyuki Ogi
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Publication number: 20130217827Abstract: An object of the present invention is to provide a methacrylic resin composition which exhibits excellent flexibility, elasticity, impact resistance, and plasticity and moldability while transparency inherent to methacrylic resins is maintained. A methacrylic resin composition to be produced is composed of 10 to 99 parts by mass of a methacrylic resin (A) containing not less than 80 mass % of a methyl methacrylate unit and 90 to 1 part by mass of a block copolymer (B) containing 10 to 60 mass % of a methyl methacrylate polymer block (b1) and 90 to 40 mass % of an acrylate polymer block (b2) and having a refractive index of 1.485 to 1.495 (the total of (A) and (B) is 100 parts by mass).Type: ApplicationFiled: October 24, 2011Publication date: August 22, 2013Applicant: Kuraray Co., Ltd.Inventors: Hiroshi Ozawa, Toru Takahashi, Atsushi Matsumura, Kenichi Hamada, Yoshihiro Morishita, Toyoaki Kurihara
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Patent number: 8268928Abstract: [Object] Provided are a sheet-like molded article having excellent surface smoothness, moldability, flexibility, and a high transmittance of short-wavelength light, and a thermoplastic polymer composition used to produce the sheet-like molded article.Type: GrantFiled: November 5, 2009Date of Patent: September 18, 2012Assignee: Kuraray CC., Ltd.Inventors: Hiroshi Oshima, Toyoaki Kurihara
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Patent number: 8153036Abstract: A process for producing a thermoplastic polymer powder that is made by subjecting an acrylic triblock copolymer (B)(A)(B) to an underwater cutting process to obtain a thermoplastic polymer powder, wherein block (A) has structural units originating from an acrylic ester; and block (B) has structural units originating from a methacrylic ester, this thermoplastic polymer powder is suitable for use as molding, skin material, and the like which are excellent in weatherability, flexibility, mechanical strength, low-temperature properties, adhesion to polar resins, rubber elasticity, safety, etc.Type: GrantFiled: February 13, 2009Date of Patent: April 10, 2012Assignee: Kuraray Co., Ltd.Inventors: Toyoaki Kurihara, Kenichi Hamada
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Patent number: 8129030Abstract: [PROBLEMS] To provide a polymer composition that simultaneously has excellent paintability and high oil resistance and is also excellent in thin-wall moldability and flexibility; and a molded article produced by injection-molding of the composition and being suitable for composite-molded grips, automotive interior and exterior trims, and so on.Type: GrantFiled: March 26, 2008Date of Patent: March 6, 2012Assignee: Kuraray Co., Ltd.Inventors: Hiroshi Oshima, Toyoaki Kurihara, Akiko Ide, Kenichi Hamada
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Patent number: 8022139Abstract: A polylactic acid composition comprising (A) a polylactic acid-series resin and (B) an acrylic triblock copolymer is prepared. The composition fulfills the following requirements: (1) the acrylic triblock copolymer (B) is a triblock polymer comprising (B1) a polymer block having a glass-transition temperature of not higher than 25° C., (B2a) a polymer block which has a glass-transition temperature of not lower than 60° C. and is bound to a terminal of the polymer block (B1), and (B2b) a polymer block which has a glass-transition temperature of not lower than 60° C. and is bound to another terminal thereof; (2) the polymer block (B1) comprises a main structural unit derived from an acrylate, and the polymer block (B2a) and the polymer block (B2b) independently comprise a main structural unit derived from a methacrylate; and (3) both of the weight-average molecular weights of the polymer block (B2a) and polymer block (B2b) are smaller than the weight-average molecular weight of the polymer block (B1).Type: GrantFiled: November 21, 2006Date of Patent: September 20, 2011Assignee: Kuraray Co., Ltd.Inventors: Toyoaki Kurihara, Kenichi Hamada, Akiko Ide, Eiji Iwasa, Tomokazu Ise, Yoshihiro Morishita, Hiroshi Oshima
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Publication number: 20110218303Abstract: [Object] Provided are a sheet-like molded article having excellent surface smoothness, moldability, flexibility, and a high transmittance of short-wavelength light, and a thermoplastic polymer composition used to produce the sheet-like molded article.Type: ApplicationFiled: November 5, 2009Publication date: September 8, 2011Applicant: KURARAY CO., LTD.Inventors: Hiroshi Oshima, Toyoaki Kurihara
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Patent number: 7772319Abstract: To provide a thermoplastic elastomer composition which can tightly adhere to a resin having a polar group without the need of using any adhesive and is excellent in water resistance, rubber properties and moldability, or to provide a composite molded article manufactured from the composition. A thermoplastic elastomer composition comprising: (a) 100 parts by mass of a styrene block copolymer constituted by a [vinyl aromatic polymer block (A1)]-[hydrogenated conjugated diene polymer block (A2)]-[vinyl aromatic polymer block (A1)]; (b) 2 to 1000 parts by mass of an acrylic block copolymer having a methacrylic acid ester polymer block (B3) and an acrylic acid ester polymer block (B1); and (c) 2 to 200 parts by mass of a block copolymer containing a hydrophilic group; and a composite resin molded article manufactured by compositing the thermoplastic elastomer composition with a thermoplastic resin.Type: GrantFiled: August 25, 2006Date of Patent: August 10, 2010Assignee: Kuraray Co., Ltd.Inventors: Shuji Fujihara, Toyoaki Kurihara, Kenichi Hamada
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Publication number: 20100119797Abstract: [Problems] To provide a polymer composition that simultaneously has excellent paintability and high oil resistance and is also excellent in thin-wall moldability and flexibility; and a molded article produced by injection-molding of the composition and being suitable for composite-molded grips, automotive interior and exterior trims, and so on.Type: ApplicationFiled: March 26, 2008Publication date: May 13, 2010Applicant: KURARAY CO., LTD.Inventors: Hiroshi Oshima, Toyoaki Kurihara, Akiko Ide, Kenichi Hamada
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Publication number: 20090239433Abstract: A polylactic acid composition comprising (A) a polylactic acid-series resin and (B) an acrylic triblock copolymer is prepared. The composition fulfills the following requirements: (1) the acrylic triblock copolymer (B) is a triblock polymer comprising (B1) a polymer block having a glass-transition temperature of not higher than 25° C., (B2a) a polymer block which has a glass-transition temperature of not lower than 60° C. and is bound to a terminal of the polymer block (B1), and (B2b) a polymer block which has a glass-transition temperature of not lower than 60° C. and is bound to another terminal thereof; (2) the polymer block (B1) comprises a main structural unit derived from an acrylate, and the polymer block (B2a) and the polymer block (B2b) independently comprise a main structural unit derived from a methacrylate; and (3) both of the weight-average molecular weights of the polymer block (B2a) and polymer block (B2b) are smaller than the weight-average molecular weight of the polymer block (B1).Type: ApplicationFiled: November 21, 2006Publication date: September 24, 2009Applicant: KURARAY CO., LTDInventors: Toyoaki Kurihara, Kenichi Hamada, Akiko Ide, Eiji Iwasa, Tomokazu Ise, Yoshihiro Morishita, Hiroshi Oshima
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Publication number: 20090202818Abstract: In order to provide an adhesive product capable of effectively maintaining security, the present invention is a pressure sensitive transfer tape (1) in which an acrylic adhesive is adopted as an adhesive (100) in which diblock copolymer 101: 100 parts by weight and triblock copolymer 102: 100 parts by weight consisting of methylmethacrylate polymer block (M) and butylacrylate polymer block (A), acrylic oligomer-based tackifier 103: 40 to 60 parts by weight, and rosin ester-based tackifier 104: 200 parts by weight are mixed.Type: ApplicationFiled: January 6, 2006Publication date: August 13, 2009Applicants: KOKUYO S&T CO., LTD., KURARAY CO., LTD.Inventors: Hiroyuki Kasahara, Kazushige Kawashita, Toyoaki Kurihara, Tetsuya Kunimune, Kenichi Hamada
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Publication number: 20090152383Abstract: A thermoplastic polymer powder which (i) consists mainly of an acrylic block copolymer comprising one or more acrylic ester polymer blocks (A) and bonded thereto at least one polymer block selected among methacrylic ester polymer blocks (B) and acrylic ester polymer blocks (C) differing in structure from the blocks (A); (ii) has a complex dynamic viscosity ?*(5) of 5.0×103 Pa·s or lower as measured under the conditions of a temperature of 250° C. and an oscillation frequency of 5 rad/sec; (iii) has a Newtonian viscosity index n represented by the equation n=log ?*(5)?log ?*(50) [wherein ?*(5) and ?*(50) indicate the complex dynamic viscosities (unit, Pa·s) as measured under the conditions of a temperature of 250° C. and oscillation frequencies of 5 and 50 rad/sec, respectively] of 0.50 or smaller; and (iv) has an average particle diameter of 1 mm or smaller. The thermoplastic polymer powder is suitable for use in molding techniques employing a powder, such as slush molding and in powder coating.Type: ApplicationFiled: February 13, 2009Publication date: June 18, 2009Applicant: Kuraray Co., Ltd.Inventors: Toyoaki KURIHARA, Kenichi Hamda
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Publication number: 20090105396Abstract: [Problems] To provide a thermoplastic elastomer composition which can tightly adhere to a resin having a polar group without the need of using any adhesive and is excellent in water resistance, rubber properties and moldability, or to provide a composite molded article manufactured from the composition. [Means for Solving Problems] A thermoplastic elastomer composition comprising: (a) 100 parts by mass of a styrene block copolymer constituted by a [vinyl aromatic polymer block (A1)]-[hydrogenated conjugated diene polymer block (A2)]-[vinyl aromatic polymer block (A1)]; (b) 2 to 1000 parts by mass of an acrylic block copolymer having a methacrylic acid ester polymer block (B3) and an acrylic acid ester polymer block (B1); and (c) 2 to 200 parts by mass of a block copolymer containing a hydrophilic group; and a composite resin molded article manufactured by compositing the thermoplastic elastomer composition with a thermoplastic resin.Type: ApplicationFiled: August 25, 2006Publication date: April 23, 2009Applicant: Kuraray Co. LTD.Inventors: Shuji Fujihara, Toyoaki Kurihara, Kenichi Hamada
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Publication number: 20090025866Abstract: A transfer-type adhesive material A is obtained by applying a adhesive 1 composed of a adhesive composition 10 (not shown) containing an acrylic polymer or a styrene-based polymer onto a release substrate in an intermittent pattern. The present invention includes pressing a nut N and a washer W as hard articles against the above-mentioned transfer-type adhesive material A, transferring a plurality of dots 1d of the adhesive 1 onto pressed surfaces Na and Wa of the nut N and the washer W, and applying onto a target surface C1b the plurality of dots 1d of the adhesive 1 transferred onto the pressed surfaces Na and Wa.Type: ApplicationFiled: February 6, 2007Publication date: January 29, 2009Inventors: Hiroyuki Kasahara, Kazushige Kawashita, Akiko Ide, Yoshihiro Morishita, Toyoaki Kurihara
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Publication number: 20060036030Abstract: A thermoplastic polymer powder which (i) consists mainly of an acrylic block copolymer comprising one or more acrylic ester polymer blocks (A) and bonded thereto at least one polymer block selected among methacrylic ester polymer blocks (B) and acrylic ester polymer blocks (C) differing in structure from the blocks (A); (ii) has a complex dynamic viscosity ?*(5) of 5.0×103 Pa.s or lower as measured under the conditions of a temperature of 250° C. and an oscillation frequency of 5 rad/sec; (iii) has a Newtonian viscosity index n represented by the equation n=log ?*(5)-log ?*(50) [wherein ?*(5) and ?*(50) indicate the complex dynamic viscosities (unit, Pa.s) as measured under the conditions of a temperature of 250° C. and oscillation frequencies of 5 and 50 rad/sec, respectively] of 0.50 or smaller; and (iv) has an average particle diameter of 1 mm or smaller. The thermoplastic polymer powder is suitable for use in molding techniques employing a powder, such as slush molding and in powder coating.Type: ApplicationFiled: October 30, 2003Publication date: February 16, 2006Applicant: Kuraray Co., Ltd.Inventors: Toyoaki Kurihara, Kenichi Hamda
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Publication number: 20050255778Abstract: The invention provides a nonwoven fabric comprising fiber primarily formed of a (meth)acrylic-based block copolymer, wherein the (meth)acrylic-based block copolymer is a specific tri-block copolymer. The invention can provide a nonwoven fabric with excellent light resistance, weather resistance, durability, flexibility and stretchability.Type: ApplicationFiled: May 9, 2003Publication date: November 17, 2005Inventors: Takashi Okai, Tomoaki Kimura, Toyoaki Kurihara, Kenichi Hamada, Akiko Ide
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Publication number: 20030191243Abstract: The present invention relates to an acrylic polymer composition having good flexibility, a molded or formed product containing the composition and having a desired balance between its flexibility and its mechanical properties, and methods of making and using the composition and the molded or formed product.Type: ApplicationFiled: March 27, 2003Publication date: October 9, 2003Applicant: KURARAY CO., LTDInventors: Kenichi Hamada, Toyoaki Kurihara, Yoshihiro Morishita, Masaji Kato, Shigeru Sasaki