Patents by Inventor Tetsuo Masubuchi

Tetsuo Masubuchi 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).

  • Patent number: 8686107
    Abstract: A polycarbonate diol comprising repeating units represented by the following formula (A) and a terminal hydroxy group, 60-100 mol % of the repeating units represented by the formula (A) being repeating units represented by the following formula (B) or (C). The amount of the repeating units represented by the formula (B) is 60-100 mol % based on the total amount of the repeating units represented by the formula (A). The polycarbonate diol has a terminal primary OH ratio of 95% or higher. (A) (In the formula, R represents a C2-12 divalent aliphatic or alicyclic hydrocarbon.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: April 1, 2014
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Tetsuo Masubuchi, Eizaburo Ueno
  • Patent number: 8318890
    Abstract: A polycarbonate diol which is useful as a raw material compound for producing a polycarbonate-based polyurethane having a sufficient mechanical strength and excellent in a balance of physical properties such as oil resistance, hydrolysis resistance, and weather resistance and which is amorphous. The polycarbonate diol includes repeating units of the below-shown formula (A) and the below-shown formula (B), wherein both terminal groups are hydroxyl groups, the ratio of the below-shown formula (A) to the below-shown formula (B) is 99:1 to 1:99 by mol, and number-average molecular weight is 300 to 10,000.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: November 27, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Tetsuo Masubuchi, Eizaburou Ueno, Yasuyuki Yoshioka, Yasuyuki Tsukimori
  • Patent number: 8168728
    Abstract: A polycarbonate diol comprising repeating units represented by the following formula (A) and a terminal hydroxy group. It is characterized in that 60-100 mol % of the repeating units represented by the formula (A) are repeating units represented by the following formula (B) or (C), the amount of the repeating units represented by the formula (B) is 10-50 mol %, excluding 50 mol %, based on the total amount of the repeating units represented by the formula (A), and the polycarbonate diol has a terminal primary OH ratio of 95-98.5%. (A) (In the formula, R represents a C2-12 divalent aliphatic or alicyclic hydrocarbon.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: May 1, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Tetsuo Masubuchi, Eizaburo Ueno
  • Publication number: 20100292497
    Abstract: A polycarbonate diol comprising repeating units represented by the following formula (A) and a terminal hydroxy group. It is characterized in that 60-100 mol % of the repeating units represented by the formula (A) are repeating units represented by the following formula (B) or (C), the amount of the repeating units represented by the formula (B) is 10-50 mol %, excluding 50 mol %, based on the total amount of the repeating units represented by the formula (A), and the polycarbonate diol has a terminal primary OH ratio of 95-98.5%. (A) (In the formula, R represents a C2-12 divalent aliphatic or alicyclic hydrocarbon.
    Type: Application
    Filed: November 4, 2008
    Publication date: November 18, 2010
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Tetsuo Masubuchi, Eizaburo Ueno
  • Publication number: 20100261852
    Abstract: A polycarbonate diol comprising repeating units represented by the following formula (A) and a terminal hydroxy group, 60-100 mol % of the repeating units represented by the formula (A) being repeating units represented by the following formula (B) or (C). The amount of the repeating units represented by the formula (B) is 60-100 mol % based on the total amount of the repeating units represented by the formula (A). The polycarbonate diol has a terminal primary OH ratio of 95% or higher. (A) (In the formula, R represents a C2-12 divalent aliphatic or alicyclic hydrocarbon.
    Type: Application
    Filed: November 4, 2008
    Publication date: October 14, 2010
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Tetsuo Masubuchi, Eizaburo Ueno
  • Publication number: 20080146766
    Abstract: An object of the present invention is to provide a novel polycarbonate diol which is useful as a raw material compound for producing a polycarbonate-based polyurethane having a sufficient mechanical strength and excellent in a balance of physical properties such as oil resistance, hydrolysis resistance, and weather resistance and which is amorphous. The invention relates to a polycarbonate diol comprising repeating units of the below-shown formula (A) and the below-shown formula (B), wherein both terminal groups are hydroxyl groups, the ratio of the below-shown formula (A) to the below-shown formula (B) is 99:1 to 1:99 by mol, and number-average molecular weight is 300 to 10,000.
    Type: Application
    Filed: February 17, 2006
    Publication date: June 19, 2008
    Inventors: Tetsuo Masubuchi, Eizaburou Ueno, Yasuyuki Yoshioka, Yasuyuki Tsukimori
  • Patent number: 7005495
    Abstract: Disclosed is a polycarbonate diol having diol monomer units and carbonate monomer units, wherein the amount of at least one diol monomer unit selected from the group consisting of a 1,5-pentanediol unit and a 1,6-hexanediol unit is from 50 to 100% by mole, based on the total molar amount of the diol monomer units, and wherein the ratio of primary hydroxyl groups in all terminal groups of the polycarbonate diol is in a specific range. Also disclosed is a thermoplastic polyurethane obtained by copolymerizing the above-mentioned polycarbonate diol and a polyisocyanate.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: February 28, 2006
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Mitsuo Konishi, Tetsuo Masubuchi, Koshiro Yokota
  • Patent number: 6872797
    Abstract: A copolycarbonate diol comprising: (a) recurring units each represented by the following formula (1): (b) recurring units each independently represented by the following formula (2): wherein n is 4, 5 or 6; and (c) terminal hydroxyl groups, wherein the copolycarbonate diol has a number average molecular weight of from 300 to 20,000, and wherein the amount of the recurring units (a) is from 10 to 90% by mole, based on the total molar amount of the recurring units (a) and (b). A thermoplastic polyurethane obtained by copolymerizing the above-mentioned copolycarbonate diol with a polyisocyanate.
    Type: Grant
    Filed: March 1, 2002
    Date of Patent: March 29, 2005
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Eizaburou Ueno, Tetsuo Masubuchi
  • Publication number: 20040092699
    Abstract: A copolycarbonate diol comprising:
    Type: Application
    Filed: August 29, 2003
    Publication date: May 13, 2004
    Inventors: Eizaburou Ueno, Tetsuo Masubuchi
  • Publication number: 20030176622
    Abstract: Disclosed is a polycarbonate diol having diol monomer units and carbonate monomer units, wherein the amount of at least one diol monomer unit selected from the group consisting of a 1,5-pentanediol unit and a 1,6-hexanediol unit is from 50 to 100% by mole, based on the total molar amount of the diol monomer units, and wherein the ratio of primary hydroxyl groups in all terminal groups of the polycarbonate diol is in a specific range. Also disclosed is a thermoplastic polyurethane obtained by copolymerizing the above-mentioned polycarbonate diol and a polyisocyanate.
    Type: Application
    Filed: November 5, 2002
    Publication date: September 18, 2003
    Inventors: Mitsuo Konishi, Tetsuo Masubuchi, Koshiro Yokota
  • Patent number: 6537472
    Abstract: A process for producing a cushioning article, which comprises: providing an injection molding apparatus having plural injection orifices, said orifices each having a discharge angle from 5° to 45° inclining from the vertical direction; injecting a thermoplastic polymer material in the form of strand from said plural orifices into a mold; and cooling said mold followed by demolding. The discharge angles of said orifices as projected into a horizontal plane each preferably has a phase difference of from 5° to 120° relative to those of adjacent orifices. Also disclosed is a cushioning article molded by the production process.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: March 25, 2003
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventor: Tetsuo Masubuchi
  • Patent number: 6476129
    Abstract: The present invention relates to a novel thermoplastic elastomer composition with superior oil resistance along with elastomeric flexibility, creep resistance at high temperature, superior mechanical strength and moldability. The composition comprises (a) 100 parts by weight of a hydrogenated block copolymer obtained by hydrogenating a block copolymer comprising at least two A polymer blocks comprised mainly of a vinyl aromatic compound and at least one B polymer block comprised mainly of a conjugated diene compound; and (b) 30-300 parts by weight of a partially crosslinked thermoplastic elastomer obtained by polymerizing an acrylate monomer absorbed in a polyolefin. The novel composition can be applied as a material for various molded parts.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: November 5, 2002
    Assignees: Asahi Kasei Kogyo Kabushiki Kaisha, Optatech Corporation
    Inventor: Tetsuo Masubuchi
  • Patent number: 6472442
    Abstract: The present invention provides a gripping part such as a steering wheel and a grip, having a soft feeling equivalent to a RIM urethane and excellent sweat resistance, without the need of coating, which solves problems involved in RIM urethane steering wheels and grips including low productivity, low recycling property, and the like. That is, a gripping part comprising a foamed product of a thermoplastic elastomer with a 1.1 to 8.0 times expansion ratio, wherein the thermoplastic elastomer is a polyurethane elastomer comprises a specific polymer polyol, a polyisocyanate, and as needed, a chain extending agent reactive with the polyisocyanate.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: October 29, 2002
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventor: Tetsuo Masubuchi
  • Publication number: 20020004558
    Abstract: The present invention relates to a novel thermoplastic elastomer composition with superior oil resistance along with elastomeric flexibility, creep resistance at high temperature, superior mechanical strength and moldability. The composition comprises (a) 100 parts by weight of a hydrogenated block copolymer obtained by hydrogenating a block copolymer comprising at least two A polymer blocks comprised mainly of a vinyl aromatic compound and at least one B polymer block comprised mainly of a conjugated diene compound; and (b) 30-300 parts by weight of a partially crosslinked thermoplastic elastomer obtained by polymerizing an acrylate monomer absorbed in a polyolefin. The novel composition can be applied as a material for various molded parts.
    Type: Application
    Filed: May 27, 1998
    Publication date: January 10, 2002
    Inventor: TETSUO MASUBUCHI
  • Publication number: 20010041772
    Abstract: A thermoplastic elastomer composition comprising the following components (A), (B) and (C): (A) 100 parts by weight of a thermoplastic polyester elastomer; (B) 3 to 100 parts by weight of a modified olefin resin having an epoxy group or a derivative group thereof in its molecule; and (C) 10 to 900 parts by weight of a rubbery elastomer selected from the group consisting of an olefin-based thermoplastic elastomers and styrene-based thermoplastic elastomers.
    Type: Application
    Filed: January 26, 2001
    Publication date: November 15, 2001
    Inventors: Tetsuo Masubuchi, Seiji Odashima
  • Patent number: 6316068
    Abstract: An elastomer composition which comprises: (a) 100 parts by weight of a hydrogenated block copolymer prepared by hydrogenating a block copolymer that comprises: a polymer block A mainly comprising at least one vinyl aromatic compound; and a polymer block B mainly comprising at least one conjugate diene, and has a number average molecular weight of from 30,000 to 400,000 and a content of the polymer block A of from 10 to 50% by weight based on the weight of said block copolymer; (b) 5 to 900 parts by weight of a polypropylene mixture comprising: (b-1) 10 to 60% by weight of a polypropylene polymer having a propylene content of 85% by weight or more; and (b-2) 40 to 90% by weight of an ethylene-propylene copolymer rubber having a propylene content of 75% by weight or more, wherein the ethylene-propylene copolymer rubber in said mixture has an average dispersed particle size of not more than 2 &mgr;m and said mixture has a bending modulus of from 20 to 700 Mpa, a Shore D hardness of from 20 to 60 and a melt flow
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: November 13, 2001
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Tetsuo Masubuchi, Mitsuhiro Tanaka
  • Publication number: 20010023510
    Abstract: A process for producing a cushioning article, which comprises: providing an injection molding apparatus having plural injection orifices, said orifices each having a discharge angle from 5° to 45° inclining from the vertical direction; injecting a thermoplastic polymer material in the form of strand from said plural orifices into a mold; and cooling said mold followed by demolding. The discharge angles of said orifices as projected into a horizontal plane each preferably has a phase difference of from 5° to 120° relative to those of adjacent orifices. Also disclosed is a cushioning article molded by the production process.
    Type: Application
    Filed: February 27, 2001
    Publication date: September 27, 2001
    Inventor: Tetsuo Masubuchi
  • Patent number: 6176510
    Abstract: An elastomer composition which comprises (a) 100 parts by weight of a hydrogenated block copolymer mixture comprising: (a-1) 10 to 60 parts by weight of a block copolymer prepared by hydrogenating a block copolymer that comprises: at least two polymer blocks A each mainly comprising a vinyl aromatic compound; and at least one polymer block B mainly comprising a conjugated diene compound, the hydrogenated block copolymer having a number average molecular weight of from more than 200,000 to not more than 400,000 and a content of the polymer block A of from 15 to 40% by weight of said block copolymer; and (a-2) 40 to 90 parts by weight of a block copolymer prepared by hydrogenating a block copolymer that comprises: at least one polymer block A mainly comprising a vinyl aromatic compound; and at least one polymer block B mainly comprising a conjugated diene compound, the hydrogenating block copolymer having a number average molecular weight of from more than 30,000 to not more than 140,000 and a content of the po
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: January 23, 2001
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Tetsuo Masubuchi, Mitsuhiro Tanaka
  • Patent number: 6106011
    Abstract: Disclosed is a thermoplastic elastomer composition comprising 100 parts by weight of a mixture of two different specific hydrogenated block copolymers which are different in molecular structure and number average molecular weight; 25 to 60 parts by weight of a polyolefin resin having a melt flow rate of from 5 to 50 g/10 minutes; and 0 to 30 parts by weight of a hydrocarbon oil. Also disclosed is a cover for an air bag device, which comprises a molded body formed by molding the thermoplastic elastomer composition.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: August 22, 2000
    Assignee: Asahi Kasei Kogyo Kabushiki
    Inventors: Tetsuo Masubuchi, Mitsuhiro Tanaka
  • Patent number: 4673714
    Abstract: An olefin hydrogenation catalyst containing as an essential component a compound represented by the formula: ##STR1## The catalyst is capable of selectively hydrogenating the unsaturated double bonds of the diene units of a conjugated diene polymer or copolymer having a number average molecular weight of 500 to 1,000,000, particularly a styrenebutadiene block copolymer comprising at least one polymer block A composed mainly of styrene and at least one polymer block B composed mainly of 1,3-butadiene and/or isoprene. The hydrogenated block copolymer obtained from such selective hydrogenation is useful as an elastomer, a thermoplastic elastomer or a thermoplastic resin having excellent weather resistance and oxidation resistance.
    Type: Grant
    Filed: April 10, 1985
    Date of Patent: June 16, 1987
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Yasushi Kishimoto, Tetsuo Masubuchi