Patents by Inventor Yusuke Tojo
Yusuke Tojo 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: 11939466Abstract: Provided is a thermoplastic polyester resin composition comprising 100 parts by weight of (A) a non-liquid crystal thermoplastic polyester resin, 45 to 150 parts by weight of (B) a thermoplastic resin that is different from the non-liquid crystal thermoplastic polyester resin and has a dielectric loss tangent of not more than 0.005 when measured at a frequency of 5.8 GHz by the cavity resonance perturbation method, 2 to 20 parts by weight of (C) a compatibilizer having at least one reactive functional group selected from epoxy, acid anhydride, oxazoline, isocyanate, and carbodiimide groups, and 0.2 to 5 parts by weight of (D) at least one compound selected from tertiary amines, amidine compounds, organic phosphines and salts thereof, imidazoles, and boron compounds, wherein the ratio of the sum of the thermoplastic resin (B) and the compatibilizer (C) is in the range of 50 to 150 parts by weight and the weight ratio (B)/(C) of the thermoplastic resin (B) to the compatibilizer (C) is in the range of 8 to 50.Type: GrantFiled: September 13, 2019Date of Patent: March 26, 2024Assignee: TORAY INDUSTRIES, INC.Inventors: Kohei Miyamoto, Yusuke Tojo, Makito Yokoe, Kosuke Shirotani, Yasuo Maeda
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Publication number: 20230144143Abstract: A thermoplastic polyester resin composition is obtained by blending, with respect to (A) 100 parts by weight of a thermoplastic polyester resin, (B) 0.1-50 parts by weight of at least one phosphinate selected from phosphinates and diphosphinates, (C) 0.1-10 parts by weight of a phosphazene compound, (D) 0.1-50 parts by weight of a nitrogen-based flame retardant, (E) 0.1-10 parts by weight of a polyfunctional epoxy compound, and (F) 0.1-20 parts by weight of an olefin resin. The ratio of the parts by weight of component (B) and the parts by weight of component (C) is 2.0-8.0.Type: ApplicationFiled: January 21, 2021Publication date: May 11, 2023Inventors: Kohei Miyamoto, Junki Tanabe, Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Publication number: 20220275149Abstract: A thermoplastic polyester resin includes a residue of an aromatic dicarboxylic acid or an ester-forming derivative thereof and a residue of a diol or an ester-forming derivative thereof, as main structural units, wherein the thermoplastic polyester resin has a hydroxy group concentration of 0.050 mmol/g or less. The use of such a thermoplastic polyester resin enables production of a molded article having excellent mechanical properties and heat resistance, and a reduced dielectric loss tangent at a high frequency of 1 GHz or more.Type: ApplicationFiled: July 20, 2020Publication date: September 1, 2022Inventors: Yusuke Tojo, Kohei Miyamoto, Makito Yokoe
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Patent number: 11345780Abstract: A thermoplastic polyester resin composition includes a thermoplastic polyester resin (A), an epoxy compound (B) having an epoxy equivalent of from 200 to 3,000 g/eq, and a hydroxy group-containing resin (C) having a number average molecular weight of from 2,000 to 500,000 and a halogen element content of 1,000 ppm or less, wherein the epoxy compound (B) is blended in an amount of from 0.05 to 10 parts by weight with respect to 100 parts by weight in total of 70 to 99.9 parts by weight of the thermoplastic polyester resin (A) and 0.1 to 30 parts by weight of the hydroxy group-containing resin (C). The thermoplastic resin composition and a molded article achieve both long-term hydrolysis resistance and heat aging resistance at a high level, and can further suppress bleed-out to the surface of the molded article during heat-dry and heat-moisture treatments.Type: GrantFiled: June 20, 2018Date of Patent: May 31, 2022Assignee: Toray Industries, Inc.Inventors: Kenichi Okunaga, Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Patent number: 11319436Abstract: A thermoplastic polyester resin composition has an excellent retention stability and is capable of producing a molded article excellent in mechanical properties and heat resistance as well as in long-term hydrolysis resistance; and the molded article. The thermoplastic polyester resin includes 100 parts by weight of a thermoplastic polyester resin (A) and 0.1 to 10 parts by weight of a biphenyl aralkyl-type epoxy resin or cyclopentadiene-type epoxy resin (B) of a specific type.Type: GrantFiled: September 4, 2014Date of Patent: May 3, 2022Assignee: Toray Industries, Inc.Inventors: Yusuke Tojo, Kentaro Togawa, Daisuke Sato, Sadanori Kumazawa
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Patent number: 11319437Abstract: A thermoplastic polyester resin composition includes 0.05 to 10 parts by weight of an epoxy compound (B) and 0.001 to 1 part by weight of a hindered amine compound (C) with respect to 100 parts by weight of a thermoplastic polyester resin (A) having an amount of carboxyl groups of 50 eq/t or less. The thermoplastic polyester resin composition is capable of producing a molded article which is excellent in mechanical properties and heat resistance, as well as in long-term hydrolysis resistance, and has a small decrease in mechanical properties and hydrolysis resistance even when melt-processed at a high temperature of 270° C. or more.Type: GrantFiled: April 2, 2018Date of Patent: May 3, 2022Assignee: Toray Industries, Inc.Inventors: Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Publication number: 20210332231Abstract: Provided is a thermoplastic polyester resin composition comprising 100 parts by weight of (A) a non-liquid crystal thermoplastic polyester resin, 45 to 150 parts by weight of (B) a thermoplastic resin that is different from the non-liquid crystal thermoplastic polyester resin and has a dielectric loss tangent of not more than 0.005 when measured at a frequency of 5.8 GHz by the cavity resonance perturbation method, 2 to 20 parts by weight of (C) a compatibilizer having at least one reactive functional group selected from epoxy, acid anhydride, oxazoline, isocyanate, and carbodiimide groups, and 0.2 to 5 parts by weight of (D) at least one compound selected from tertiary amines, amidine compounds, organic phosphines and salts thereof, imidazoles, and boron compounds, wherein the ratio of the sum of the thermoplastic resin (B) and the compatibilizer (C) is in the range of 50 to 150 parts by weight and the weight ratio (B)/(C) of the thermoplastic resin (B) to the compatibilizer (C) is in the range of 8 to 50.Type: ApplicationFiled: September 13, 2019Publication date: October 28, 2021Applicant: TORAY Industries, Inc.Inventors: Kohei MIYAMOTO, Yusuke TOJO, Makito YOKOE, Kosuke SHIROTANI, Yasuo MAEDA
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Publication number: 20210032402Abstract: A thermoplastic polyester resin composition includes a thermoplastic polyester resin (A), an epoxy compound (B) having an epoxy equivalent of from 200 to 3,000 g/eq, and a hydroxy group-containing resin (C) having a number average molecular weight of from 2,000 to 500,000 and a halogen element content of 1,000 ppm or less, wherein the epoxy compound (B) is blended in an amount of from 0.05 to 10 parts by weight with respect to 100 parts by weight in total of 70 to 99.9 parts by weight of the thermoplastic polyester resin (A) and 0.1 to 30 parts by weight of the hydroxy group-containing resin (C). The thermoplastic resin composition and a molded article achieve both long-term hydrolysis resistance and heat aging resistance at a high level, and can further suppress bleed-out to the surface of the molded article during heat-dry and heat-moisture treatments.Type: ApplicationFiled: June 20, 2018Publication date: February 4, 2021Inventors: Kenichi Okunaga, Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Patent number: 10781309Abstract: A thermoplastic polyester resin composition is obtained by blending, per 100 parts by weight of (A) a thermoplastic polyester resin, 0.1 to 5 parts by weight of (B) a novolac type epoxy resin having a specific structure, and 0.05 to 10 parts by weight of (C) an epoxy compound having two epoxy functional groups per molecule. Thus, a molded article that exhibits superior melt stability with respect to a wide range of processing temperatures, has excellent mechanical properties and heat resistance, and exhibits superior long-term hydrolysis resistance, chemical resistance, and oxidative deterioration resistance can be obtained.Type: GrantFiled: January 19, 2017Date of Patent: September 22, 2020Assignee: Toray Industries, Inc.Inventors: Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Publication number: 20200172726Abstract: A thermoplastic polyester resin composition has an excellent retention stability and is capable of producing a molded article excellent in mechanical properties and heat resistance as well as in long-term hydrolysis resistance; and the molded article. The thermoplastic polyester resin includes 100 parts by weight of a thermoplastic polyester resin (A) and 0.1 to 10 parts by weight of a biphenyl aralkyl-type epoxy resin or cyclopentadiene-type epoxy resin (B) of a specific type.Type: ApplicationFiled: February 4, 2020Publication date: June 4, 2020Inventors: Yusuke Tojo, Kentaro Togawa, Daisuke Sato, Sadanori Kumazawa
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Publication number: 20200071516Abstract: A thermoplastic polyester resin composition includes 0.05 to 10 parts by weight of an epoxy compound (B) and 0.001 to 1 part by weight of a hindered amine compound (C) with respect to 100 parts by weight of a thermoplastic polyester resin (A) having an amount of carboxyl groups of 50 eq/t or less. The thermoplastic polyester resin composition is capable of producing a molded article which is excellent in mechanical properties and heat resistance, as well as in long-term hydrolysis resistance, and has a small decrease in mechanical properties and hydrolysis resistance even when melt-processed at a high temperature of 270° C. or more.Type: ApplicationFiled: April 2, 2018Publication date: March 5, 2020Inventors: Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Patent number: 10577457Abstract: A terminal modified polybutylene terephthalate resin has a weight average molecular weight Mw of 10,000 to 100,000, a melting point of 210° C. to 235° C., and a melt viscosity ? at 250° C. of not more than 10 Pa·s, and includes 90 to 300 mol/ton of a compound having a (poly)oxyalkylene structure, the compound being terminally bound in the resin, wherein the weight average molecular weight Mw represents a relative weight average molecular weight with respect to the molecular weight of a standard poly(methyl methacrylate) as determined by gel permeation chromatography using hexafluoroisopropanol (supplemented with 0.005 N sodium trifluoroacetate) as a mobile phase.Type: GrantFiled: October 24, 2016Date of Patent: March 3, 2020Assignee: Toray Industries, Inc.Inventors: Tsuyoshi Tanaka, Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Patent number: 10392505Abstract: There is provided a thermoplastic polyester resin composition, comprising a specified amount of a multivalent hydroxyl compound (B) having five or more hydroxyl groups and a specified amount of an epoxy compound (C) that are to be blended with a thermoplastic polyester resin (A).Type: GrantFiled: October 26, 2016Date of Patent: August 27, 2019Assignee: TORAY INDUSTRIES, INC.Inventors: Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Publication number: 20190062547Abstract: There is provided a thermoplastic polyester resin composition, comprising a specified amount of a multivalent hydroxyl compound (B) having five or more hydroxyl groups and a specified amount of an epoxy compound (C) that are to be blended with a thermoplastic polyester resin (A).Type: ApplicationFiled: October 26, 2016Publication date: February 28, 2019Applicant: TORAY INDUSTRIES, INC.Inventors: Yusuke TOJO, Makito YOKOE, Hideyuki UMETSU
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Publication number: 20190055398Abstract: A thermoplastic polyester resin composition is obtained by blending, per 100 parts by weight of (A) a thermoplastic polyester resin, 0.1 to 5 parts by weight of (B) a novolac type epoxy resin having a specific structure, and 0.05 to 10 parts by weight of (C) an epoxy compound having two epoxy functional groups per molecule. Thus, a molded article that exhibits superior melt stability with respect to a wide range of processing temperatures, has excellent mechanical properties and heat resistance, and exhibits superior long-term hydrolysis resistance, chemical resistance, and oxidative deterioration resistance can be obtained.Type: ApplicationFiled: January 19, 2017Publication date: February 21, 2019Inventors: Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Publication number: 20180223040Abstract: A terminal modified polybutylene terephthalate resin has a weight average molecular weight Mw of 10,000 to 100,000, a melting point of 210° C. to 235° C., and a melt viscosity ? at 250° C. of not more than 10 Pa·s, and includes 90 to 300 mol/ton of a compound having a (poly)oxyalkylene structure, the compound being terminally bound in the resin, wherein the weight average molecular weight Mw represents a relative weight average molecular weight with respect to the molecular weight of a standard poly(methyl methacrylate) as determined by gel permeation chromatography using hexafluoroisopropanol (supplemented with 0.005 N sodium trifluoroacetate) as a mobile phase.Type: ApplicationFiled: October 24, 2016Publication date: August 9, 2018Inventors: Tsuyoshi Tanaka, Yusuke Tojo, Makito Yokoe, Hideyuki Umetsu
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Publication number: 20170321029Abstract: A thermoplastic polyester resin composition includes 100 parts by weight of a thermoplastic polyester resin (A) having a melting point of 180 to 250° C. and 0.01 to 1 part by weight of a metal halide (B), wherein an area average particle size of the metal halide (B) in the thermoplastic polyester resin composition is 0.1 to 500 nm. The thermoplastic polyester resin composition has an excellent melt retention stability and is capable of producing a molded article excellent in mechanical properties and long-term resistance to oxidative degradation.Type: ApplicationFiled: July 22, 2015Publication date: November 9, 2017Inventors: Ken Sudo, Yusuke Tojo, Kenichi Utazaki
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Publication number: 20160289445Abstract: A thermoplastic polyester resin composition has an excellent retention stability and is capable of producing a molded article excellent in mechanical properties and heat resistance as well as in long-term hydrolysis resistance; and the molded article. The thermoplastic polyester resin includes 100 parts by weight of a thermoplastic polyester resin (A) and 0.1 to 10 parts by weight of a biphenyl aralkyl-type epoxy resin or cyclopentadiene-type epoxy resin (B) of a specific type.Type: ApplicationFiled: September 4, 2014Publication date: October 6, 2016Applicant: TORAY INDUSTRIES, INC.Inventors: Yusuke Tojo, Kentaro Togawa, Daisuke Sato, Sadanori Kumazawa
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Publication number: 20150045530Abstract: A catalyst solution for polyester production includes a titanium compound (A) and an organic solvent (B), wherein particle diameter of particles included in the solution, which is measured by dynamic light scattering method and is subsequently determined by cumulant analysis method, is not greater than 200 nm.Type: ApplicationFiled: May 15, 2012Publication date: February 12, 2015Applicant: Toray Industries, Inc.Inventors: Masataka Makino, Yusuke Tojo, Sadanori Kumazawa