Patents by Inventor Nobuhide Tsunaka
Nobuhide Tsunaka 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: 11292877Abstract: Provided is an amorphous polyamide resin that has a small weight change rate under hot and humid conditions and that can maintain a good appearance even when formed into a molded article and placed under hot and humid conditions. Also provided is a molded article including the amorphous polyamide resin. An amorphous polyamide resin includes: constituent units derived from a diamine and constituent units derived from a dicarboxylic acid, not less than 70 mol % of the constituent units derived from a diamine being constituent units derived from isophoronediamine, the constituent units derived from a dicarboxylic acid including constituent units derived from an ?,?-straight chain aliphatic dicarboxylic acid having from 8 to 14 carbons and constituent units derived from an aromatic dicarboxylic acid.Type: GrantFiled: February 6, 2018Date of Patent: April 5, 2022Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Masaki Yamanaka, Tomonori Kato, Hatsuki Oguro, Nobuhide Tsunaka
-
Publication number: 20200062901Abstract: Provided is an amorphous polyamide resin that has a small weight change rate under hot and humid conditions and that can maintain a good appearance even when formed into a molded article and placed under hot and humid conditions. Also provided is a molded article including the amorphous polyamide resin. An amorphous polyamide resin includes: constituent units derived from a diamine and constituent units derived from a dicarboxylic acid, not less than 70 mol % of the constituent units derived from a diamine being constituent units derived from isophoronediamine, the constituent units derived from a dicarboxylic acid including constituent units derived from an ?,?-straight chain aliphatic dicarboxylic acid having from 8 to 14 carbons and constituent units derived from an aromatic dicarboxylic acid.Type: ApplicationFiled: February 6, 2018Publication date: February 27, 2020Inventors: Masaki YAMANAKA, Tomonori KATO, Hatsuki OGURO, Nobuhide TSUNAKA
-
Publication number: 20180171075Abstract: Provided is a polyamide resin with high transparency and high heat aging resistance. The polyamide resin contains a diamine-derived structural unit and a dicarboxylic acid-derived structural unit, the diamine-derived structural unit being such that 70 mol % or more thereof is derived from 1,3-bis(aminomethyl)cyclohexane, and the dicarboxylic acid-derived structural unit being such that 10 to 90 mol % thereof is derived from isophthalic acid, 90 to 10 mol % of thereof is derived from a straight chain aliphatic dicarboxylic acid having 8 to 12 carbon atoms, and the dicarboxylic acid-derived structural unit containing substantially no terephthalic acid-derived structural unit.Type: ApplicationFiled: April 27, 2016Publication date: June 21, 2018Inventors: Nobuhide TSUNAKA, Tomonori KATO, Hatsuki OGURO, Tomo CHIBA, Masayuki KOBAYASHI
-
Patent number: 10000607Abstract: A polyamide resin is produced through polycondensation by melt-kneading a polyamide oligomer having a relative viscosity of from 1.1 to 1.3 and a water content of 3% by mass or less in a cylinder (S) of an extruder. The extruder includes open vents (OV1) and (OV2) and vacuum vents (V1) and (V2). The open vent (OV1) is arranged near a supply port (A3), e.g., above the supply port (A3), and a pressure-decreasing element (Y) is arranged on an upstream side with respect to positions of the vacuum vents (V1) and (V2). In addition, the open vent (OV2) is arranged in a preceding area (OA) and is brought into a pressurized state.Type: GrantFiled: July 2, 2014Date of Patent: June 19, 2018Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Nobuhide Tsunaka, Takafumi Oda, Jun Mitadera, Tomonori Kato
-
Publication number: 20180162069Abstract: Provided is a continuous fiber-reinforced composite material with an excellent solvent resistance, and a molded article made of such material. The continuous fiber-reinforced composite material comprises a polyamide resin impregnated into continuous fibers; wherein the polyamide resin is composed of a structural unit derived from diamine and a structural unit derived from dicarboxylic acid; 50% by mole or more of the structural unit derived from diamine is derived from 1,3-bis (aminomethyl) cyclohexane; and 30% by mole or more of the structural unit derived from dicarboxylic acid is derived from isophthalic acid.Type: ApplicationFiled: August 10, 2016Publication date: June 14, 2018Inventors: Nobuhiko MATSUMOTO, Nobuhide TSUNAKA
-
Patent number: 9844927Abstract: A multilayer container having a layer configuration of 3 or more layers including, as layered in that order from an inner layer to an outer layer, an oxygen-permeable layer containing an oxygen-permeable resin as the main component thereof, an oxygen-absorbing adhesive layer containing, as the main components thereof, an oxygen-absorbing resin composition containing a deoxidant composition and a thermoplastic resin and an adhesive resin, and a gas-barrier layer containing a gas-barrier resin as the main component thereof, wherein the gas-barrier resin is a polyamide resin including a diamine unit containing a metaxylylenediamine unit in an amount of 70 mol % or more and a dicarboxylic acid unit containing 75 to 96 mol % of an ?,?-linear aliphatic dicarboxylic acid unit having 4 to 20 carbon atoms and 25 to 4 mol % of an aromatic dicarboxylic acid unit, the content of the deoxidant composition in the oxygen-absorbing adhesive layer is 5 to 50% by mass relative to 100% by mass of the material constituting the oType: GrantFiled: November 20, 2014Date of Patent: December 19, 2017Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Tomonori Kato, Nobuhide Tsunaka, Takafumi Oda
-
Patent number: 9540485Abstract: A polyamide resin is produced by polycondensing a polyamide oligomer having a relative viscosity of from 1.1 to 1.3 and a water content of 3% by weight or less by melt-kneading using an intermeshed co-rotation twin screw extruder having at least one or more open vents OV1 and OV2 and at least one or more vacuum vents VV1 and VV2. A pressure-decreasing element Y for increasing the resin filling rate is provided at a position nearer to the supply section side than positions at which the vacuum vents VV1 and VV2 are provided, and an area of 30% or less of the total screw length is a vacuum area having a pressure of 300 Torr or less.Type: GrantFiled: March 5, 2014Date of Patent: January 10, 2017Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takafumi Oda, Nobuhide Tsunaka, Jun Mitadera, Tomonori Kato
-
Publication number: 20160376407Abstract: A polyamide resin is produced through polycondensation by melt-kneading a polyamide oligomer having a relative viscosity of from 1.1 to 1.3 and a water content of 3% by mass or less in a cylinder (S) of an extruder. The extruder includes open vents (OV1) and (OV2) and vacuum vents (V1) and (V2). The open vent (OV1) is arranged near a supply port (A3), e.g., above the supply port (A3), and a pressure-decreasing element (Y) is arranged on an upstream side with respect to positions of the vacuum vents (V1) and (V2). In addition, the open vent (OV2) is arranged in a preceding area (OA) and is brought into a pressurized state.Type: ApplicationFiled: July 2, 2014Publication date: December 29, 2016Inventors: Nobuhide Tsunaka, Takafumi Oda, Jun Mitadera, Tomonori Kato
-
Patent number: 9512314Abstract: Provided is a polyether polyamide composition including 100 parts by mass of a polyether polyamide in which a diamine constituent unit thereof is derived from a specified polyether diamine compound and a xylylenediamine, and a dicarboxylic acid constituent unit thereof is derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbon atoms, having blended therein from 0.01 to 15 parts by mass of at least one molecular chain extender selected from a carbodiimide compound and a compound containing two or more epoxy groups in a molecule thereof.Type: GrantFiled: August 12, 2013Date of Patent: December 6, 2016Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazuya Satou, Tomonori Katou, Jun Mitadera, Mayumi Takeo, Nobuhide Tsunaka
-
Publication number: 20160303834Abstract: A multilayer container having a layer configuration of 3 or more layers including, as layered in that order from an inner layer to an outer layer, an oxygen-permeable layer containing an oxygen-permeable resin as the main component thereof, an oxygen-absorbing adhesive layer containing, as the main components thereof, an oxygen-absorbing resin composition containing a deoxidant composition and a thermoplastic resin and an adhesive resin, and a gas-barrier layer containing a gas-barrier resin as the main component thereof, wherein the gas-barrier resin is a polyamide resin including a diamine unit containing a metaxylylenediamine unit in an amount of 70 mol % or more and a dicarboxylic acid unit containing 75 to 96 mol % of an ?,?-linear aliphatic dicarboxylic acid unit having 4 to 20 carbon atoms and 25 to 4 mol % of an aromatic dicarboxylic acid unit, the content of the deoxidant composition in the oxygen-absorbing adhesive layer is 5 to 50% by mass relative to 100% by mass of the material constituting the oType: ApplicationFiled: November 20, 2014Publication date: October 20, 2016Inventors: Tomonori KATO, Nobuhide TSUNAKA, Takafumi ODA
-
Publication number: 20160297182Abstract: A multilayer container having a layer configuration of 4 or more layers including, as layered in that order from an inner layer to an outer layer, an oxygen-permeable layer containing an oxygen-permeable resin as the main component thereof, an oxygen-absorbing layer formed of an oxygen-absorbing resin composition containing a deoxidant composition and a thermoplastic resin, an adhesive layer containing an adhesive resin as the main component thereof, and a gas-barrier layer containing a gas-barrier resin as the main component thereof, wherein the gas-barrier resin is a polyamide resin containing a diamine unit containing a metaxylylenediamine unit in an amount of 70 mol % or more and a dicarboxylic acid unit containing 85 to 96 mol % of an ?,?-linear aliphatic dicarboxylic acid unit having 4 to 20 carbon atoms and 15 to 4 mol % of an aromatic dicarboxylic acid unit, the thickness of the oxygen-permeable layer is 15 to 40% of the total thickness of the multilayer container, and the thickness of the oxygen-absoType: ApplicationFiled: November 20, 2014Publication date: October 13, 2016Inventors: Takafumi ODA, Nobuhide TSUNAKA, Tomonori KATO
-
Publication number: 20160046765Abstract: A polyamide resin is produced by polycondensing a polyamide oligomer having a relative viscosity of from 1.1 to 1.3 and a water content of 3% by weight or less by melt-kneading using an intermeshed co-rotation twin screw extruder having at least one or more open vents OV1 and OV2 and at least one or more vacuum vents VV1 and VV2. A pressure-decreasing element Y for increasing the resin filling rate is provided at a position nearer to the supply section side than positions at which the vacuum vents VV1 and VV2 are provided, and an area of 30% or less of the total screw length is a vacuum area having a pressure of 300 Torr or less.Type: ApplicationFiled: March 5, 2014Publication date: February 18, 2016Inventors: Takafumi Oda, Nobuhide Tsunaka, Jun Mitadera, Tomonori Kato
-
Publication number: 20150225541Abstract: A polyamide resin composition containing a polyamide resin (A); and a metal compound (C) containing at least one metal atom selected from iron, manganese, copper, and zinc; or a colorant (D) containing at least one metal atom selected from iron, manganese, copper, and zinc; wherein the polyamide resin (A) contains 25 to 50% by mol of a diamine unit containing a specific diamine unit in an amount of 50% by mol or more, 25 to 50% by mol of a dicarboxylic acid unit containing a specific dicarboxylic acid unit in an amount of 50% by mol or more, and 0.1 to 50% by mol of a specific constitutional unit.Type: ApplicationFiled: August 26, 2013Publication date: August 13, 2015Inventors: Takafumi Oda, Nobuhide Tsunaka, Takanori Miyabe
-
Publication number: 20150218731Abstract: Provided is a polyether polyamide fiber including a polyether polyamide in which a diamine constituent unit thereof is derived from a specified polyether diamine compound and a xylylenediamine, and a dicarboxylic acid constituent unit thereof is derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbon atoms.Type: ApplicationFiled: August 12, 2013Publication date: August 6, 2015Inventors: Jun Mitadera, Mayumi Takeo, Kazuya Satou, Nobuhide Tsunaka, Tomonori Katou
-
Publication number: 20150218348Abstract: Provided is a polyether polyamide composition including 100 parts by mass of a polyether polyamide resin in which a diamine constituent unit thereof is derived from a specified polyether diamine compound and a xylylenediamine, and a dicarboxylic acid constituent unit thereof is derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbon atoms, having blended therein from 15 to 200 parts by mass of a filler.Type: ApplicationFiled: August 12, 2013Publication date: August 6, 2015Inventors: Nobuhide Tsunaka, Tomonori Katou, Jun Mitadera, Mayumi Takeo, Kazuya Satou
-
Publication number: 20150218344Abstract: Provided is a polyether polyamide composition including a polyether polyamide in which a diamine constituent unit thereof is derived from a specified polyether diamine compound and a xylylenediamine, and a dicarboxylic acid constituent unit thereof is derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbon atoms and a stabilizer.Type: ApplicationFiled: August 12, 2013Publication date: August 6, 2015Applicant: Mitsubishi Gas Chemical Company, Inc.Inventors: Mayumi Takeo, Tomonori Katou, Jun Mitadera, Kazuya Satou, Nobuhide Tsunaka
-
Publication number: 20150218315Abstract: Provided is a moisture absorbing and releasing material including a polyether polyamide in which a diamine constituent unit thereof is derived from a specified polyether diamine compound (A-1) and a xylylenediamine (A-2), and a dicarboxylic acid constituent unit thereof is derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbon atoms, wherein in the case where when held at 23° C. and 80% RH, its coefficient of saturated moisture absorption is defined as 100%, a normalized coefficient of moisture absorption after holding in an environment at 23° C. and 80% RH until a coefficient of moisture absorption reaches a saturated state and then further holding in an environment at 23° C. and 50% RH for 60 minutes is from 1 to 50%.Type: ApplicationFiled: August 12, 2013Publication date: August 6, 2015Inventors: Mayumi Takeo, Tomonori Katou, Jun Mitadera, Kazuya Satou, Nobuhide Tsunaka
-
Publication number: 20150210852Abstract: Provided is a polyether polyamide composition including 100 parts by mass of a polyether polyamide in which a diamine constituent unit thereof is derived from a specified polyether diamine compound and a xylylenediamine, and a dicarboxylic acid constituent unit thereof is derived from an ?,?-linear aliphatic dicarboxylic acid having from 4 to 20 carbon atoms, having blended therein from 0.01 to 15 parts by mass of at least one molecular chain extender selected from a carbodiimide compound and a compound containing two or more epoxy groups in a molecule thereof.Type: ApplicationFiled: August 12, 2013Publication date: July 30, 2015Inventors: Kazuya Satou, Tomonori Katou, Jun Mitadera, Mayumi Takeo, Nobuhide Tsunaka