Patents by Inventor Mineo Ohtake
Mineo Ohtake 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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Publication number: 20140212614Abstract: A wholly aromatic polyester being excellent in heat resistance and toughness and being capable of being produced in an ordinary polymerization device, which exhibits optical anisotropy when it is molten, containing the constitutional unit (I) derived from 4-hydroxybenzoic acid, the constitutional unit (II) derived from 6-hydroxy-2-naphthoic acid, the constitutional unit (III) derived from 1,4-phenylenedicarboxylic acid, the constitutional unit (IV) derived from 1,3-phenylenedicarboxylic acid and the constitutional unit (V) derived from 4,4?-dihydroxybiphenyl, containing the constitutional unit (I) in an amount of 35 to 75 mol %, the constitutional unit (II) in an amount of 2 to 8 mol %, the constitutional unit (III) in an amount of 4.5 to 30.5 mol %, the constitutional unit (IV) in an amount of 2 to 8 mol %, the constitutional unit (V) in an amount of 12.5 to 32.5 mol %, the total of constitutional units (II) and (IV) being in an amount of 4 to 10 mol %.Type: ApplicationFiled: March 28, 2012Publication date: July 31, 2014Applicant: Polyplastics Co., Ltd.Inventors: Toshiaki Yokota, Mineo Ohtake
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Patent number: 7776410Abstract: A purpose of the present invention is to obtain a hollow extruded article by easy blow molding or extrusion molding to give a draw down resistance and a uniform wall thickness of the article without damaging low gas permeability which is a characteristic property of a liquid-crystalline polymer. A resin composition for extrusion molding which is prepared by melting and kneading 99-70 wt. % of wholly aromatic polyester amide liquid crystal resin (A) having a melting point of 270-370° C. and a melt viscosity at 1000/sec. shear rate of 20-60 Pa·s at Temperature T1 which is higher than 20° C. from said melting point, and containing (I) 1-15 mole % of 6-hydroxy-2-naphthoic acid residue, (II) 40-70 mole % of 4-hydroxybenzoic acid residue, (III) 5-28.5 mole % of aromatic diol residue, (IV) 1-20 mole % of 4-aminophenol residue, and (V) 6-29.5 mole % of aromatic dicarboxylic acid residue; and 1-30 wt. % of epoxy modified polyolefin type resin (B), and has a melt viscosity at 1000/sec.Type: GrantFiled: October 27, 2005Date of Patent: August 17, 2010Assignee: Polyplastics Co. Ltd.Inventors: Toshio Nakane, Mineo Ohtake, Toshio Shiwaku, Masato Suzuki
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Patent number: 7648748Abstract: The present invention provides a liquid crystalline resin composition capable of readily blow-molding a molded article having uniform thickness, with the addition of good blow-moldability owing to the improved drawdown-resistant property, the improved melt-tension increase rate, and other properties without deteriorating the low gas-permeability which is a characteristic of liquid crystalline resin.Type: GrantFiled: October 13, 2006Date of Patent: January 19, 2010Assignee: Polyplastics Co., Ltd.Inventors: Toshio Nakane, Mineo Ohtake, Toshio Shiwaku, Masato Suzuki
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Publication number: 20080286510Abstract: A purpose of the present invention is to obtain a hollow extruded article by easy blow molding or extrusion molding to give a draw down resistance and a uniform wall thickness of the article without damaging low gas permeability which is a characteristic property of a liquid-crystalline polymer. A resin composition for extrusion molding which is prepared by melting and kneading 99-70 wt. % of wholly aromatic polyester amide liquid crystal resin (A) having a melting point of 270-370° C. and a melt viscosity at 1000/sec. shear rate of 20-60 Pa·s at Temperature T1 which is higher than 20° C. from said melting point, and containing (I) 1-15 mole % of 6-hydroxy-2-naphthoic acid residue, (II) 40-70 mole % of 4-hydroxybenzoic acid residue, (III) 5-28.5 mole % of aromatic diol residue, (IV) 1-20 mole % of 4-aminophenol residue, and (V) 6-29.5 mole % of aromatic dicarboxylic acid residue; and 1-30 wt. % of epoxy modified polyolefin type resin (B), and has a melt viscosity at 1000/sec.Type: ApplicationFiled: October 27, 2005Publication date: November 20, 2008Applicant: POLYPLASTICS CO., LTD.Inventors: Toshio Nakane, Mineo Ohtake, Toshio Shiwaku, Masato Suzuki
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Publication number: 20070085056Abstract: The present invention provides a liquid crystalline resin composition capable of readily blow-molding a molded article having uniform thickness, with the addition of good blow-moldability owing to the improved drawdown-resistant property, the improved melt-tension increase rate, and other properties without deteriorating the low gas-permeability which is a characteristic of liquid crystalline resin.Type: ApplicationFiled: October 13, 2006Publication date: April 19, 2007Applicant: Polyplastics Co., Ltd.Inventors: Toshio Nakane, Mineo Ohtake, Toshio Shiwaku, Masato Suzuki
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Publication number: 20060073306Abstract: The present invention is to provide an amorphous wholly aromatic polyester amide composition which has an excellent stretching property and a good adhesion to a heterogeneous polymer and thereby can be in particular suitably used for a multilayer film, or a multilayer sheet, a multilayer blow formed product and the like. That is, (the first invention) an amorphous wholly aromatic polyester amide composition obtained by blending 1 to 30% by weight of a modified polyolefin resin or a polyamide resin having a melting point of 230° C.Type: ApplicationFiled: November 5, 2003Publication date: April 6, 2006Inventors: Toshio Nakane, Toshiaki Yokota, Mineo Ohtake, Toshio Shiwaku
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Patent number: 6956072Abstract: To provide a resin composition, in which a liquid crystal polymer is made into fiber in a molded article to exhibit an extremely high reinforcing effect which has not been available yet, and from which a molded article having an excellent mechanical strength can be manufactured in a stable manner. That is, a thermoplastic resin composition, wherein 100 parts by weight in total consisting of 99-50 parts by weight of a thermoplastic polyester resin (A) not forming an anisotropic molten phase and 1-50 parts by weight of a liquid crystal polymer (B) capable of forming an anisotropic molten phase is blended with 0.001-2.Type: GrantFiled: July 12, 2000Date of Patent: October 18, 2005Assignee: Polyplastics Co., Ltd.Inventors: Keiichi Kanaka, Toshio Shiwaku, Mineo Ohtake
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Patent number: 6797198Abstract: This invention offers a liquid crystal polymer which exhibits an excellent low warp and is advantageously used especially as a connector or the like. That is, a liquid crystal polymer composition in which a plate-shaped filler (B) in an amount of 5-100 parts by weight satisfying the following formulae (1) and (2) and having an average particle diameter of 0.5-100 &mgr;m is compounded with 100 parts by weight of a liquid crystal polymer (A). D/W≦5 (1) 3≦W/H≦200 (2) wherein D is the maximum particle diameter of the plate-shaped filler (B), and the direction of the diameter D is defined as “x”; W is a particle's diameter which is in the direction y at the right angle to the direction x; and H is a thickness of the particle in the direction of z which is vertical to the xy-plane.Type: GrantFiled: March 27, 2002Date of Patent: September 28, 2004Assignee: Polyplastics Co., Ltd.Inventors: Takayuki Miyashita, Mineo Ohtake, Hirokazu Ohshiba
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Patent number: 6702955Abstract: To provide a material improved in dimensional accuracy and reduced in the extent of deformation caused by warpage without suffering from a serious reduction in mechanical properties such as flexural properties, and suitable for connectors which have a ratio (L/t) of the length (L) of the product to the average thickness (t) thereof of at least 100 and a ratio (L/h) of the length (L) of the product to the height (h) thereof of at least 10. A liquid crystal polymer composition for connectors, having a ratio (L/t) of the length (L) of the product to the average thickness (t) thereof of at least 100 and a ratio (L/h) of the length (L) of the product to the height (h) thereof of not exceeding 10, which is obtained by blending 100 parts by weight of a liquid crystal polymer (A) with 5 to 100 parts by weight of a fibrous filler (B) having an average fiber diameter of 0.Type: GrantFiled: June 1, 2001Date of Patent: March 9, 2004Assignee: Polyplastics Co., Ltd.Inventors: Haruji Murakami, Mineo Ohtake
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Patent number: 6414072Abstract: A flame-retardant thermoplastic resin composition, which comprises a polymer alloy composed of a thermoplastic resin (A) and a liquid-crystal polymer (B), is excellent in the stability of the heat retentivity imparted thereto in the injection molding step, exhibits an extremely high reinforcing effect which has been unattainable heretofore because the liquid-crystal polymer can be readily fiberized in the molding step, and provides moldings excellent in flame retardancy.Type: GrantFiled: September 29, 1999Date of Patent: July 2, 2002Assignee: Polyplastics Co., Ltd.Inventors: Haruji Murakami, Mineo Ohtake, Kazuhito Kobayashi
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Publication number: 20020006995Abstract: A flame-retardant thermoplastic resin composition, which comprises a polymer alloy composed of a thermoplastic resin (A) and a liquid-crystal polymer (B), is excellent in the stability of the heat retentivity imparted thereto in the injection molding step, exhibits an extremely high reinforcing effect which has been unattainable heretofore because the liquid-crystal polymer can be readily fiberized in the molding step, and provides moldings excellent in flame retardancy.Type: ApplicationFiled: September 29, 1999Publication date: January 17, 2002Inventors: HARUJI MURAKAMI, MINEO OHTAKE, KAZUHITO KOBAYASHI
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Patent number: 5518791Abstract: A molding having a high transparency and a surface hardness of B or higher in terms of pencil hardness, is provided by blow molding process employing no orientation step. A high-hardness transparent polyester molding, obtained by quenching and carrying out non-orientation blow molding of a polyester resin or a composition thereof in a molten state, and subsequent crystallization thereof in a specific temperature range.Type: GrantFiled: July 25, 1994Date of Patent: May 21, 1996Assignee: Polyplastics Co., Ltd.Inventors: Akehide Shimoda, Shigeru Nezu, Mineo Ohtake