Patents by Inventor Toshitaka Kanai
Toshitaka Kanai 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: 20200002490Abstract: Provided is a biaxially-stretched film wherein the biaxial stretching is possible in a broader temperature range and which is excellent in thickness accuracy, and an ethylene polymer composition serving as a raw material of the film. The biaxially-stretched film of the present invention is obtained from an ethylene polymer composition (E) including a specific ethylene polymer component (A) containing 20 to 100 wt % of an ethylene polymer (a) being a copolymer of ethylene and a C4-10 ?-olefin and having specific melt flow rate and density, and an ethylene polymer component (B) being another copolymer of ethylene and a C4-10 ?-olefin, wherein a weight fraction [WA] of the ethylene polymer component (A) is 0.50 or more and 0.92 or less, and a weight fraction [WB] of the ethylene polymer component (B) is 0.08 or more and 0.50 or less provided that WA and WB total 1.0.Type: ApplicationFiled: September 10, 2019Publication date: January 2, 2020Inventors: Keiko KIN, Tsutomu TASAKI, Toshitaka KANAI
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Patent number: 10457786Abstract: Provided is a biaxially-stretched film wherein the biaxial stretching is possible in a broader temperature range and which is excellent in thickness accuracy, and an ethylene polymer composition serving as a raw material of the film. The biaxially-stretched film of the present invention is obtained from an ethylene polymer composition (E) including a specific ethylene polymer component (A) containing 20 to 100 wt % of an ethylene polymer (a) being a copolymer of ethylene and a C4-10 ?-olefin and having specific melt flow rate and density, and an ethylene polymer component (B) being another copolymer of ethylene and a C4-10 ?-olefin, wherein a weight fraction [WA] of the ethylene polymer component (A) is 0.50 or more and 0.92 or less, and a weight fraction [WE] of the ethylene polymer component (B) is 0.08 or more and 0.50 or less provided that WA and WB total 1.0.Type: GrantFiled: February 19, 2014Date of Patent: October 29, 2019Assignee: PRIME POLYMER CO., LTD.Inventors: Keiko Kin, Tsutomu Tasaki, Toshitaka Kanai
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Publication number: 20170051444Abstract: (1) An elastic nonwoven fabric and a fiber product using the elastic nonwoven fabric, the elastic nonwoven fabric containing a crystalline resin composition containing low crystalline polypropylene and high crystalline polypropylene, the low crystalline polypropylene satisfying items (a) and (b) below, and a crystallization temperature (Tc) of the crystalline resin composition measured with a differential scanning calorimeter (DSC) being from 20 to 100° C.: (a) a melting point (Tm-D) being from 0 to 120° C., which is defined as a peak top of a peak observed on the most high temperature side of a melt endothermic curve obtained by maintaining at ?10° C. for 5 minutes and increasing in temperature at 10° C.Type: ApplicationFiled: November 4, 2016Publication date: February 23, 2017Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tomoaki TAKEBE, Yutaka MINAMI, Toshitaka KANAI
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Patent number: 9523161Abstract: (1) An elastic nonwoven fabric and a fiber product using the elastic nonwoven fabric, the elastic nonwoven fabric containing a crystalline resin composition containing low crystalline polypropylene and high crystalline polypropylene, the low crystalline polypropylene satisfying items (a) and (b) below, and a crystallization temperature (Tc) of the crystalline resin composition measured with a differential scanning calorimeter (DSC) being from 20 to 100° C.: (a) a melting point (Tm-D) being from 0 to 120° C., which is defined as a peak top of a peak observed on the most high temperature side of a melt endothermic curve obtained by maintaining at ?10° C. for 5 minutes and increasing in temperature at 10° C.Type: GrantFiled: June 25, 2008Date of Patent: December 20, 2016Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Tomoaki Takebe, Yutaka Minami, Toshitaka Kanai
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Publication number: 20150376358Abstract: Provided is a biaxially-stretched film wherein the biaxial stretching is possible in a broader temperature range and which is excellent in thickness accuracy, and an ethylene polymer composition serving as a raw material of the film. The biaxially-stretched film of the present invention is obtained from an ethylene polymer composition (E) including a specific ethylene polymer component (A) containing 20 to 100 wt % of an ethylene polymer (a) being a copolymer of ethylene and a C4-10 ?-olefin and having specific melt flow rate and density, and an ethylene polymer component (B) being another copolymer of ethylene and a C4-10 ?-olefin, wherein a weight fraction [WA] of the ethylene polymer component (A) is 0.50 or more and 0.92 or less, and a weight fraction [WB] of the ethylene polymer component (B) is 0.08 or more and 0.50 or less provided that WA and WB total 1.0.Type: ApplicationFiled: February 19, 2014Publication date: December 31, 2015Inventors: Keiko KIN, Tsutomu TASAKI, Toshitaka KANAI
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Patent number: 8545980Abstract: A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF).Type: GrantFiled: October 31, 2005Date of Patent: October 1, 2013Assignee: Idemitsu Kosan Co., Ltd.Inventors: Takeharu Tajima, Toshitaka Kanai, Tomoaki Takebe, Yutaka Minami
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Publication number: 20120208422Abstract: The present invention provides a spunbond nonwoven fabric made of a specific crystalline resin composition having a melt flow rate of 25 to 80 g/10 min and a melting endotherm ?H of 65 to 100 J/g. More particularly, the invention provides a polypropylene spunbond nonwoven fabric having a very small fiber diameter and providing an excellent feel to the touch, and a polypropylene spunbond nonwoven fabric exhibiting high softness.Type: ApplicationFiled: September 13, 2010Publication date: August 16, 2012Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Yohei Koori, Tomoaki Takebe, Yutaka Minami, Toshitaka Kanai
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Publication number: 20110236683Abstract: Provided are a method of producing an elastic fiber, including the steps of: subjecting a raw material to melt extrusion with a spinning nozzle at 100 to 300° C.; cooling the fiber after the melt extrusion in a water bath at 0 to 50° C.; and winding the cooled fiber, in which a specific low-crystalline polypropylene is used as the raw material, and an elastic fiber having a core-sheath bicomponent structure, which is obtained by using a specific low-crystalline polypropylene.Type: ApplicationFiled: August 7, 2009Publication date: September 29, 2011Applicant: Idemitsu Kosan Co., Ltd.Inventors: Tomoaki Takebe, Yutaka Minami, Toshitaka Kanai
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Publication number: 20100190405Abstract: (1) An elastic nonwoven fabric and a fiber product using the elastic nonwoven fabric, the elastic nonwoven fabric containing a crystalline resin composition containing low crystalline polypropylene and high crystalline polypropylene, the low crystalline polypropylene satisfying items (a) and (b) below, and a crystallization temperature (Tc) of the crystalline resin composition measured with a differential scanning calorimeter (DSC) being from 20 to 100° C.: (a) a melting point (Tm-D) being from 0 to 120° C., which is defined as a peak top of a peak observed on the most high temperature side of a melt endothermic curve obtained by maintaining at ?10° C. for 5 minutes and increasing in temperature at 10° C.Type: ApplicationFiled: June 25, 2008Publication date: July 29, 2010Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Tomoaki Takebe, Yutaka Minami, Toshitaka Kanai
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Publication number: 20090098786Abstract: A polypropylene resin having: (1) a melt flow rate (MFR) of 6 to 100 g/10 minutes, (2) a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of 3 to 6, and (3) a 116° C. non-eluted component content (100-W116(%)) of 50% or more and a content of components eluted at 90° C. or less (W90) of 10 to 30%, measured by temperature-rising fractional chromatography (TREF).Type: ApplicationFiled: October 31, 2005Publication date: April 16, 2009Applicant: Idemitsu Kosan Co., Ltd.Inventors: Takeharu Tajima, Toshitaka Kanai, Tomoaki Takebe, Hiroshi Minami
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Publication number: 20060089477Abstract: An ethylene-?-olefin copolymer resin having a melt index of 0.5 to 2.0 g/l0 minutes and a density of 0.905 to 0.920 g/cm3 and showing such a temperature raising elution fractionation pattern that the amount of fractions corresponding to a high density polyethylene is 8 to 25% of the total elution and that the amount of fractions eluted up to a temperature of T40° C. is 40% of the total elution and the amount of fractions eluted up to a temperature of T70° C. is 70% of the total elution, wherein the value of 30/(T70?T40) is 2.0 to 3.3% ° C.Type: ApplicationFiled: August 12, 2005Publication date: April 27, 2006Applicant: OKURA INDUSTRIAL CO., LTD.Inventors: Toshitaka Kanai, Shin-ichiro Miyazaki, Hideki Uehara, Kunio Sakauchi, Toshiro Yamada
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Publication number: 20060025490Abstract: A resin composition containing thermoplastic resin and a flame retardant is sufficiently kneaded and molded, and carbon dioxide in a supercritical state is caused to permeate into the resin composition. Subsequently, the resin composition is degassed by cooling and/or pressure reduction. As a result of degassing, a resin foam body having a fine and uniform micro-cellular foam structure is obtained. The resin foam body has a cyclic structure in which a resin phase and a pore phase are continuous and intertwined. The obtained resin foam body can suitably find applications such as home OA parts, electric and electronic parts and automobile parts that are required to be highly strong, lightweight and nonflammable.Type: ApplicationFiled: September 29, 2005Publication date: February 2, 2006Applicant: Idemitsu Kosan Co., Ltd.Inventors: Hiromu Saito, Takafumi Oda, Hiroshi Kawato, Toshitaka Kanai, Nobuhiro Watanabe, Takehito Konakazawa
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Publication number: 20040220367Abstract: An ethylene-&agr;-olefin copolymer resin having a melt index of 0.5 to 2.0 g/10 minutes and a density of 0.905 to 0.920 g/cm3 and showing such a temperature raising elution fractionation pattern that the amount of fractions corresponding to a high density polyethylene is 8 to 25% of the total elution and that the amount of fractions eluted up to a temperature of T40° C. is 40% of the total elution and the amount of fractions eluted up to a temperature of T70° C. is 70% of the total elution, wherein the value of 30/(T70−T40) is 2.0 to 3.3%/° C.Type: ApplicationFiled: February 4, 2004Publication date: November 4, 2004Inventors: Toshitaka Kanai, Shin-ichiro Miyazaki, Hideki Uehara, Kunio Sakauchi, Toshiro Yamada
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Publication number: 20040220289Abstract: A resin composition containing thermoplastic resin and a flame retardant is sufficiently kneaded and molded and carbon dioxide in a supercritical state is caused to permeate into it. Subsequently, the resin composition is degassed by cooling and/or pressure reduction. As a result of degassing, a resin foam body 1 having a fine and uniform micro-cellular foam structure is obtained. The resin foam body 1 has a cyclic structure in which a resin phase 2 and a pore phase 3 are continuous and intertwined. The obtained resin foam body 1 can suitably find applications such as home OA parts, electric and electronic parts and automobile parts that are required to be highly strong, lightweight and nonflammable.Type: ApplicationFiled: January 23, 2004Publication date: November 4, 2004Inventors: Hiromu Saito, Takafumi Oda, Hiroshi Kawato, Toshitaka Kanai, Nobuhiro Watanabe, Takehito Konakazawa
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Publication number: 20040198853Abstract: Carbon dioxide in a supercritical state is caused to permeate into a resin composition formed by sufficiently kneading a thermoplastic copolymer having a polysiloxane structure at recurring units. Subsequently, the resin composition is degassed by cooling and/or pressure reduction. As a result of degassing, a resin foam body 1 having a fine and uniform micro-cellular foam structure is obtained. The resin foam body 1 has a cyclic structure in which a resin phase 2 and a pore phase 3 are continuous and intertwined. The resin foam body 1 shows an excellent reflectivity relative to rays of light and is highly nonflammable, while it is very strong and lightweight.Type: ApplicationFiled: February 9, 2004Publication date: October 7, 2004Inventors: Hiromu Saito, Takafumi Oda, Hiroshi Kawato, Toshitaka Kanai, Nobuhiro Watanabe, Takehito Konakazawa
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Patent number: 4251199Abstract: A cylindrical stabilizing means (stabilizer) for resin bubbles useful to perform shaping of tubular films without causing the fluctuation or breakage of resin bubbles even in case where a take up velocity of the tubular film is relatively large, cooling of tubular body of molten resin extrudated from a die is not sufficient or amount of extrudate from a die is relatively large, is provided. Said stabilizing means has penetration holes on the circumferential wall close to the annular slit 16 of die, which communicate with an opening of the tip of the means, and also has continuous deep grooves of a depth of 0.5 mm or more extending from the portion of the circumferential wall close to said annular slit to the opening of the tip, which grooves are formed on the whole outer circumferential wall having fine concave and convex engraved patterns of the difference of height or depth of from 0.1 mm to 0.5 mm.Type: GrantFiled: June 6, 1979Date of Patent: February 17, 1981Assignee: Idemitsu Petrochemical Co. Ltd.Inventors: Fumio Imaizumi, Kazuo Minato, Toshitaka Kanai