Patents by Inventor Toru Ikuta
Toru Ikuta 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: 8173262Abstract: In a molded composite article, a resin member comprising a non-urethane thermoplastic resin and a resin member comprising a thermoplastic polyurethane resin are directly joined with each other. The non-urethane thermoplastic resin comprises at least one member selected from the group consisting of a polyamide component having an alicyclic ring and an amino group-containing compound, or each of the non-urethane thermoplastic resins and the thermoplastic polyurethane has a polyether segment. Even if the base resin is a non-urethane thermoplastic resin, the present invention provides a direct and firm bonding between the non-urethane thermoplastic resin member and the thermoplastic polyurethane resin member.Type: GrantFiled: September 30, 2004Date of Patent: May 8, 2012Assignee: Daicel-Evonik Ltd.Inventors: Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
-
Patent number: 8029910Abstract: The present invention is directed to a composite comprising a resin element comprising a resin composition and a vulcanized rubber element formed by vulcanizing an unvulcanized rubber, wherein the resin composition comprises a resin, a vulcanization-activating agent for improving adhesiveness of the resin to a rubber, and a stabilizer, and the resin composition and the vulcanized rubber are directly joined together.Type: GrantFiled: May 4, 2010Date of Patent: October 4, 2011Assignee: Daicel-Evonik Ltd.Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda, Hiroaki Arita, Naoki Wakita
-
Patent number: 7989540Abstract: A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.Type: GrantFiled: September 12, 2003Date of Patent: August 2, 2011Assignee: Daicel-Evonik Ltd.Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda, Hiroaki Arita, Naoki Wakita
-
Publication number: 20100282383Abstract: A rubber-reinforced structure comprises a composite member comprising a resin member and a rubber member being directly bonded to the resin member without any adhesive, wherein the resin member and the rubber member form a tire. The composite member can be obtained by bringing a resin member into contact with an unvulcanized rubber composition in the following combination, and vulcanizing the unvulcanized rubber: (i) a combination of a rubber composition containing a radical-generating agent, and a resin composition containing a thermoplastic resin having at least two active atoms (a hydrogen atom or a sulfur atom) on the average per molecule, each atom having an orbital interaction energy coefficient S of not less than 0.Type: ApplicationFiled: July 20, 2010Publication date: November 11, 2010Inventor: Toru IKUTA
-
Publication number: 20100215964Abstract: A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.Type: ApplicationFiled: May 4, 2010Publication date: August 26, 2010Inventors: Toru IKUTA, Hajime KOMADA, Mitsuteru MUTSUDA, Hiroaki ARITA, Naoki WAKITA
-
Patent number: 7740943Abstract: In a molded composite article formed by directly bonding a resin member comprising a polyamide-series resin to a resin member comprising a thermoplastic polyurethane-series resin, the polyamide-series resin comprises a polyamide block copolymer containing (A) a polyether segment having at least one terminal imino group. The polyamide-series resin may comprise a polyamide-series resin having a free amino group in a concentration of not less than about 10 mmol/kg. The molded composite article is producible, for example, by heating at least one of the polyamide-series resin and the thermoplastic polyurethane-series resin to bond the former to the latter. Thus obtained molded composite article is suitable for a member of a shoe and an industrial roll. In such a process, the polyamide-series resin member and the thermoplastic polyurethane-series resin member both of which are different in nature from each other can be directly and firmly bonded together.Type: GrantFiled: May 1, 2005Date of Patent: June 22, 2010Assignee: Daicel-Evonik Ltd.Inventors: Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
-
Publication number: 20090194225Abstract: A rubber-reinforced structure comprises a composite member comprising a resin member and a rubber member being directly bonded to the resin member without any adhesive, wherein the resin member and the rubber member form a tire. The composite member can be obtained by bringing a resin member into contact with an unvulcanized rubber composition in the following combination, and vulcanizing the unvulcanized rubber: (i) a combination of a rubber composition containing a radical-generating agent, and a resin composition containing a thermoplastic resin having at least two active atoms (a hydrogen atom or a sulfur atom) on the average per molecule, each atom having an orbital interaction energy coefficient S of not less than 0.Type: ApplicationFiled: April 10, 2009Publication date: August 6, 2009Applicant: Daicel-Evonik Ltd.Inventor: Toru IKUTA
-
Patent number: 7553912Abstract: A resin comprises a resin containing a vulcanization-activating agent, or crosslinkable group-containing resin (e.g., a resin having an unsaturated bond). Moreover, a composite dispersion may be formed by a combination of a specific resin and rubber [e.g., (a) a combination of a resin, and an unvulcanized rubber containing a vulcanizing agent and a vulcanization-activating agent at a specific ratio; (b) a combination of a polyamide-series resin, and an unvulcanized rubber containing a vulcanizing agent and a polyalkenylene at a specific ratio; (c) a combination of a resin and a silicone-series unvulcanized rubber; and (d) a combination of a polyphenylene ether-series resin containing a polyalkenylene, and an unvulcanized rubber containing a sulfur or sulfur-containing organic compound as a vulcanizing agent].Type: GrantFiled: July 4, 2003Date of Patent: June 30, 2009Assignee: Daicel-Evonik Ltd.Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda
-
Patent number: 7534494Abstract: In a molded composite article formed by directly joining a resin member comprising a polyamide-series resin to a resin member comprising a thermoplastic polyurethane-series resin, as the polyamide-series resin, a polyamide-series resin having an amino group of not less than 10 mmol/kg is used. The molded composite article may be produced by heating at least any one of the polyamide-series resin and the thermoplastic polyurethane-series resin to join to the other resin.Type: GrantFiled: December 1, 2003Date of Patent: May 19, 2009Assignee: Daicel-Evonik Ltd.Inventors: Naoki Wakita, Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
-
Publication number: 20070292703Abstract: A resin composition comprises a resin, a vulcanization-activating agent, and a stabilizer. The vulcanization-activating agent may be a compound having a plurality of polymerizable unsaturated bonds (e.g., a compound having a plurality of (meth)acryloyl groups). The stabilizer may be an antioxidant, or a light stabilizer (particularly, a stabilizer is capable of capturing a radical). Use of the resin composition as a resin material ensures to directly join between a resin and a rubber certainly and firmly. The proportion of the vulcanization-activating agent may be about 0.1 to 10 parts by weight relative to 100 parts by weight of the resin. The proportion of the stabilizer may be about 0.01 to 5 parts by weight relative to 100 parts by weight of the resin. The present invention provides a resin composition excellent in adhesiveness to a rubber.Type: ApplicationFiled: September 12, 2003Publication date: December 20, 2007Applicant: DAICEL-DEGUSSA LTD.Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda, Hiroaki Arita, Naoki Wakita
-
Publication number: 20070172670Abstract: In a molded composite article formed by directly bonding a resin member comprising a polyamide-series resin to a resin member comprising a thermoplastic polyurethane-series resin, the polyamide-series resin comprises a polyamide block copolymer containing (A) a polyether segment having at least one terminal imino group. The polyamide-series resin may comprise a polyamide-series resin having a free amino group in a concentration of not less than about 10 mmol/kg. The molded composite article is producible, for example, by heating at least one of the polyamide-series resin and the thermoplastic polyurethane-series resin to bond the former to the latter. Thus obtained molded composite article is suitable for a member of a shoe and an industrial roll. In such a process, the polyamide-series resin member and the thermoplastic polyurethane-series resin member both of which are different in nature from each other can be directly and firmly bonded together.Type: ApplicationFiled: May 1, 2005Publication date: July 26, 2007Inventors: Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
-
Publication number: 20070122615Abstract: In a molded composite article, a resin member comprising a non-urethane-series thermoplastic resin and a resin member comprising a thermoplastic polyurethane-series resin are directly joined with each other; and the non-urethane-series thermoplastic resin is a non-urethane-series thermoplastic resin (Ib) or (IIb), and the non-urethane-series thermoplastic resin and the thermoplastic polyurethane-series resin fulfill a following requirement (Ia) or (IIa), (Ia): the non-urethane-series thermoplastic resin (Ib) comprises at least one member selected from the group consisting of a polyamide component having an alicyclic ring, and an amino group-containing compound, or (IIa): each of the non-urethane-series thermoplastic resin (IIb) and the thermoplastic polyurethane-series resin has a polyether segment. The resin composition (Ib) may be a resin composition (Ib-2) containing a non-urethane-series thermoplastic resin and the amino group-containing compound.Type: ApplicationFiled: September 30, 2004Publication date: May 31, 2007Inventors: Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
-
Patent number: 7175916Abstract: A composite of a resin member bonded to a vulcanized rubber member is obtained with using a rubber member vulcanized with a radical-generating agent (e.g., an organic peroxide) and a thermoplastic resin having at least 2 atoms, on average, selected from H and S atom per molecule, each atom having not less than 0.006 of an orbital interaction energy coefficient S represented by the following formula (1): S=(CHOMO,n)2/|Ec?EHOMO,n|+(CLUMO,n)2/|Ec?ELUMO,n| ??(1) wherein Ec: an orbital energy (eV) of a radical, CHOMO,n: a molecular-orbital coefficient of a highest occupied molecular orbital (HOMO) of an n-th H or S atom constituting a basic unit of the resin, EHOMO,n: an orbital energy (eV) of the HOMO, CLUMO,n: a molecular-orbital coefficient of a lowest unoccupied molecular orbital (LUMO) of the n-th H or S atom constituting the basic unit of the resin, ELUMO,n: an orbital energy (eV) of the LUMO, and above all represent a value calculated by a semiempirical molecular orbital method MOPACPM3.Type: GrantFiled: January 9, 2002Date of Patent: February 13, 2007Assignee: Daicel-Degussa Ltd.Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda
-
Publication number: 20060149000Abstract: A resin comprises a resin containing a vulcanization-activating agent, or crosslinkable group-containing resin (e.g., a resin having an unsaturated bond). Moreover, a composite dispersion may be formed by a combination of a specific resin and rubber [e.g., (a) a combination of a resin, and an unvulcanized rubber containing a vulcanizing agent and a vulcanization-activating agent at a specific ratio; (b) a combination of a polyamide-series resin, and an unvulcanized rubber containing a vulcanizing agent and a polyalkenylene at a specific ratio; (c) a combination of a resin and a silicone-series unvulcanized rubber; and (d) a combination of a polyphenylene ether-series resin containing a polyalkenylene, and an unvulcanized rubber containing a sulfur or sulfur-containing organic compound as a vulcanizing agent].Type: ApplicationFiled: July 4, 2003Publication date: July 6, 2006Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda
-
Publication number: 20060108708Abstract: In a molded composite article formed by directly joining a resin member comprising a polyamide-series resin to a resin member comprising a thermoplastic polyurethane-series resin, as the polyamide-series resin, a polyamide-series resin having an amino group of not less than 10 mmol/kg is used. The molded composite article may be produced by heating at least any one of the polyamide-series resin and the thermoplastic polyurethane-series resin to join to the other resin.Type: ApplicationFiled: December 1, 2003Publication date: May 25, 2006Inventors: Naoki Wakita, Mitsuteru Mutsuda, Hiroaki Arita, Hajime Komada, Toru Ikuta
-
Publication number: 20050247391Abstract: A rubber-reinforced structure comprises a composite member comprising a resin member and a rubber member being directly bonded to the resin member without any adhesive, wherein the resin member and the rubber member form a tire. The composite member can be obtained by bringing a resin member into contact with an unvulcanized rubber composition in the following combination, and vulcanizing the unvulcanized rubber: (i) a combination of a rubber composition containing a radical-generating agent, and a resin composition containing a thermoplastic resin having at least two active atoms (a hydrogen atom or a sulfur atom) on the average per molecule, each atom having an orbital interaction energy coefficient S of not less than 0.Type: ApplicationFiled: July 4, 2003Publication date: November 10, 2005Inventor: Toru Ikuta
-
Patent number: 6800372Abstract: A composite of a resin member bonded to a rubber member is obtained by molding a resin molding element and a rubber molding element with contacting said elements each other, and vulcanizing or crosslinking the rubber molding element, wherein said resin molding element is either of a resin composition and a resin member, each comprising the thermoplastic resin; and said rubber molding element is either of a rubber composition and a rubber premolded article, each comprising at least an unvulcanized silicone rubber, and a radical-generating agent (e.g., organic peroxides) being activating on a surface to be contacted with said resin molding element. The thermoplastic resin includes a polyamide-series resin, a polyester-serires resin, a PPE-series resin, etc. The unvulcanized rubber composition may comprise a polyfunctional compound having plural polymerizable groups.Type: GrantFiled: September 16, 2002Date of Patent: October 5, 2004Assignee: Daicel-Degussa Ltd.Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda
-
Patent number: 6730764Abstract: A concrete retarder comprises a polymer (A) having the concrete set retarding ability. The polymer (A) has, as a structural unit, a low glass transition temperature (Tg) component with a Tg of not higher than −5° C., and a surface tension of 45 mN/m or lower. The proportion of the low Tg component having a glass transition temperature (Tg) of not higher than −5° C. is 10% by weight or more relative to the whole polymer (A). The polymer (A) has a functional group which can form a salt with a metal ion (particularly, a free acid group or a group capable of forming an acid group by hydrolysis). The polymer (A) is a vinyl-series polymer, a polyester (saturated or unsaturated polyester), or a crosslinked or graft polymerized unsaturated polyester. A sheet and a decorative pack may be formed with the concrete retarder.Type: GrantFiled: December 15, 1999Date of Patent: May 4, 2004Assignee: Daicel Huels Ltd.Inventors: Toru Ikuta, Mitsuteru Mutsuda
-
Publication number: 20030170469Abstract: A composite of a resin member bonded to a rubber member is obtained by molding a resin molding element and a rubber molding element with contacting said elements each other, and vulcanizing or crosslinking the rubber molding element, wherein said resin molding element is either of a resin composition and a resin member, each comprising the thermoplastic resin; and said rubber molding element is either of a rubber composition and a rubber premolded article, each comprising at least an unvulcanized silicone rubber, and a radical-generating agent (e.g., organic peroxides) being activating on a surface to be contacted with said resin molding element. The thermoplastic resin includes a polyamide-series resin, a polyester-serires resin, a PPE-series resin, etc. The unvulcanized rubber composition may comprise a polyfunctional compound having plural polymerizable groups.Type: ApplicationFiled: September 16, 2002Publication date: September 11, 2003Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda
-
Publication number: 20030118839Abstract: A composite of a resin member bonded to a vulcanized rubber member is obtained with using a rubber member vulcanized with a radical-generating agent (e.g., an organic peroxide) and a thermoplastic resin having at least 2 atoms, on average, selected from H and S atom per molecule, each atom having not less than 0.Type: ApplicationFiled: September 13, 2002Publication date: June 26, 2003Inventors: Toru Ikuta, Hajime Komada, Mitsuteru Mutsuda