Patents by Inventor Yasuro Suzuki
Yasuro Suzuki 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: 7871557Abstract: The object is to provide a method for producing a film excellent in a quality of odorless or free from deteriorating taste of food contained in a package of the extruded molded article by using an ethylene-?-olefin copolymer excellent in extrusion molding processability. This object is achieved by a method for producing an extruded molded article comprising a step of extruding a copolymer of ethylene and ?-olefin of from 3 to 20 carbon atoms having an activation energy for melt flow of not less than 50 kJ/mol under one of the following conditions: (a) a temperature of melted resin at die gap of T-die is not more than 200° C., (b) a temperature of melted resin at die gap of tubular tie is not more than 170° C.Type: GrantFiled: September 23, 2004Date of Patent: January 18, 2011Assignee: Sumitomo Chemical Company, Ltd.Inventors: Yuki Iseki, Kenzo Chikanari, Yasuro Suzuki
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Publication number: 20070066696Abstract: A process for producing a crosslinked foam of a polyolefin-based resin by a pressure-foaming method, which comprises heating a polyolefin-based resin composition containing the polyolefin-based resin, a crosslinking agent and foaming agent under pressure using a mold in which a metal charge is charged inside the mold.Type: ApplicationFiled: September 19, 2006Publication date: March 22, 2007Applicant: Sumitomo Chemical Company, LimitedInventors: Katsuhiro Yamada, Yasuro Suzuki
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Patent number: 7141639Abstract: An object of the present invention is to provide an ethylene-?-olefin copolymer excellent in extrusion molding processability and in the balance between the appearance and impact strength. This object is achieved by a copolymer of ethylene and ?-olefin of from 4 to 20 carbon atoms having melt flow rate (MFR; unit is g/10 minutes), melt tension at 190° C. (MT; unit is cN), intrinsic viscosity ([?]; unit is dl/g), the chain length A and characteristic relaxation time at 190° C. (?; unit is sec) which satisfy the specific relations.Type: GrantFiled: August 28, 2003Date of Patent: November 28, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Yuki Iseki, Yasuro Suzuki, Tadahiro Mitsuno
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Patent number: 7125946Abstract: The invention provides an ethylene-?-olefin copolymer which is superior in extrusion molding processability. The present invention is to provide a copolymer of ethylene and ?-olefin of from 4 to 20 carbon atoms, having melt flow rate of from 1 to 100 g/10 min, an activation energy for melt flow of 60 kJ/mol or more, melt tension at 190° C. (MT), intrinsic viscosity ([?]) and a chain length A which satisfy the formula (1) to (3), wherein the chain length A is a chain length at peak position of a logarithm normal distribution curve of a component having the highest molecular weight among logarithm normal distribution curves obtained by dividing a chain length distribution curve obtained by gel permeation chromatography measurement into at least two logarithm normal distribution curves.Type: GrantFiled: March 26, 2004Date of Patent: October 24, 2006Assignee: Sumitomo Chemical Company, LimitedInventors: Yuki Iseki, Yasuro Suzuki, Tadahiro Mitsuno
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Publication number: 20050192417Abstract: An object of the present invention is to provide an ethylene-?-olefin copolymer excellent in extrusion molding processability and in the balance between the appearance and impact strength. This object is achieved by a copolymer of ethylene and ?-olefin of from 4 to 20 carbon atoms having melt flow rate (MFR; unit is g/10 minutes), melt tension at 190° C. (MT; unit is cN), intrinsic viscosity ([?]; unit is dl/g), the chain length A and characteristic relaxation time at 190° C. (?; unit is sec) which satisfy the specific relations.Type: ApplicationFiled: August 28, 2003Publication date: September 1, 2005Applicant: Sumitomo Chemical Company, LimitedInventors: Yuki Iseki, Yasuro Suzuki, Tadahiro Mitsuno
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Publication number: 20050098927Abstract: The object is to provide a method for producing a film excellent in a quality of odorless or free from deteriorating taste of food contained in a package of the extruded molded article by using an ethylene-?-olefin copolymer excellent in extrusion molding processability. This object is achieved by a method for producing an extruded molded article comprising a step of extruding a copolymer of ethylene and ?-olefin of from 3 to 20 carbon atoms having an activation energy for melt flow of not less than 50 kJ/mol under one of the following conditions: (a) a temperature of melted resin at die gap of T-die is not more than 200° C., (b) a temperature of melted resin at die gap of tubular tie is not more than 170° C.Type: ApplicationFiled: September 23, 2004Publication date: May 12, 2005Applicant: Sumitomo Chemical Company, LimitedInventors: Yuki Iseki, Kenzo Chikanari, Yasuro Suzuki
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Publication number: 20040249101Abstract: The invention provides an ethylene-&agr;-olefin copolymer which is superior in extrusion molding processability. The present invention is to provide a copolymer of ethylene and &agr;-olefin of from 4 to 20 carbon atoms, having melt flow rate of from 1 to 100 g/10 min, an activation energy for melt flow of 60 kJ/mol or more, melt tension at 190° C. (MT), intrinsic viscosity ([&eegr;]) and a chain length A which satisfy the formula (1) to (3), wherein the chain length A is a chain length at peak position of a logarithm normal distribution curve of a component having the highest molecular weight among logarithm normal distribution curves obtained by dividing a chain length distribution curve obtained by gel permeation chromatography measurement into at least two logarithm normal distribution curves.Type: ApplicationFiled: March 26, 2004Publication date: December 9, 2004Applicant: Sumitomo Chemical Company, LimitedInventors: Yuki Iseki, Yasuro Suzuki, Tadahiro Mitsuno
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Patent number: 6451946Abstract: A copolymer of (a)ethylene and/or an &agr;-olefin, (b) a cyclic olefin and (c) an alkenyl aromatic hydrocarbon, having acyclic olefin content of 0.01 to 66 mol % and a styrene content of 3 to 99 mol %, wherein the styrene content is more than a half of the cyclic olefin content, a process for producing the copolymer with a specific catalyst and a molded article made from the copolymer. The copolymer and molded article thereof are transparent, and excellent in flexibility and heat resistance.Type: GrantFiled: December 9, 1999Date of Patent: September 17, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuo Oi, Yasuro Suzuki, Tatsuya Miyatake
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Patent number: 6420506Abstract: An &agr;-olefin-alkenyl aromatic hydrocarbon-diene copolymer, a process for producing the copolymer, which comprises copolymerizing an &agr;-olefin, a mono-alkenyl aromatic hydrocarbon and a diene in the presence of a specific catalyst, and a molded article comprising the copolymer.Type: GrantFiled: March 2, 2000Date of Patent: July 16, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuo Oi, Yuki Iseki, Yasuro Suzuki
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Patent number: 6388031Abstract: An ethylene-alkenyl aromatic compound copolymer, the copolymer having a melt viscosity &eegr;*190 at a shear rate of 100 radian/second at 190° C. of 3.0×103 to 3.0×106 poises, and a molecular weight distribution in terms of weight average molecular weight(Mw) to number average molecular weight(Mn) [Mw/Mn ] of 1.2 to 4.0, and wherein a zero-shear melt viscosity &eegr;*0 (poise) and a characteristic relaxation time &tgr;0 (second) satisfy the relation of the expression (1) below; log &tgr;0>log &eegr;*0−6.Type: GrantFiled: December 23, 1999Date of Patent: May 14, 2002Assignee: Sumitomo Chemical Company, LimitedInventors: Nobuo Oi, Yuki Iseki, Yasuro Suzuki
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Patent number: 6288193Abstract: An ethylene-based polymer comprising ethylene and at least one addition polymerizable monomer containing a vinyl compound (A) described below, wherein the ethylene-based polymer has a melting temperature (Tm) of 119 ° C. or lower and, the melt index MI (g/10 minutes) of the ethylene-based polymer and the molar content “m” (mole %) of the vinyl compound (A) satisfy the following formula (1): Vinyl compound (A): a vinyl compound represented by the structural formula CH2═CH—R containing a saturated hydrocarbon group R wherein the substituent R has a steric parameter Es of not less than −2.77 and not more than −1.64 and the substituent R has a steric parameter B1 of not less than 1.53 and not more than 2.90: 0.01≧MI≦18+m1.Type: GrantFiled: October 25, 1999Date of Patent: September 11, 2001Assignee: Sumitomo Chemical Co., Ltd.Inventors: Yuki Iseki, Yasuro Suzuki
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Patent number: 6274691Abstract: A method of producing an inflation film, which comprises processing an ethylene polymer or a resin composition containing said ethylene polymer in a die gap at a melting temperature of not more than 170° C., wherein said ethylene polymer is produced by an ionic polymerization method and said ethylene polymer has a density of 0.89 to 0.96 g/cm3, a melting viscosity &eegr;*[170] at 170° C. under a shear rate of 100 rad/sec of 0.001×104 to 3.5×104 poise and a weight proportion a (% by weight) of a cold xylene-soluble portion satisfying the following formula (1): a<4.8×104×(0.95−d)3+106×(0.95−d)4+0.5 formula (1) (wherein a is a weight proportion (% by weight) of a cold xylene-soluble portion of the ethylene polymer and d is a density (g/cm3) of an ethylene polymer).Type: GrantFiled: October 19, 1998Date of Patent: August 14, 2001Assignee: Sumitomo Chemical Company, LimitedInventors: Yasuro Suzuki, Yuki Iseki
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Patent number: 5561186Abstract: A resin composition having an improved recycling property comprising;(a) from 5 to 95 parts by weight of a poly-phenylene ether,(b) from 95 to 5 parts by weight of a polyamide,(c) from 0 to 30 parts by weight per 100 parts by weight of [(a)+(b)] of a compatibilizing agent,(d) from 0.001 to 10 parts by weight per 100 parts by weight of [(a)+(b)] of an alkali earth metal oxide,(e) from 0 to 100 parts by weight per 100 parts by weight of [(a)+(b)] of a rubbery material, and(f) from 0 to 200 parts by weight per 100 parts by weight of [(a)+(b)] of an inorganic filler.Type: GrantFiled: June 6, 1995Date of Patent: October 1, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Kenji Nagaoka, Kaoru Kitadono, Yasuro Suzuki
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Patent number: 5559186Abstract: A thermoplastic resin composition having excellent appearance and moldability contains:(A) 1 to 99% by weight of a polyphenylene ether resin,(B) 99 to 1% by weight of a polystyrene resin prepared by copolymerization of: (i) a styrene compound, 100 to 500 ppm by weight of a compound containing 2-6 vinyl groups, and if necessary, a compound capable of copolymerizing with the styrene compound, or (ii) a polystyrene resin obtained by copolymerization of a styrene compound, 100 to 500 ppm by weight of a compound containing 2-6 vinyl groups, a first rubber, and if necessary, a compound capable of copolymerizing with said styrene compound, or a mixture of (i) and (ii). Component (C) is a second rubber which can be present in amounts of about 0 to 100 parts by weight relative to (A) and (B).Type: GrantFiled: March 29, 1995Date of Patent: September 24, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Takeshi Fujii, Yasuro Suzuki, Hayato Kihara, Takashi Anbo
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Patent number: 5478878Abstract: There is provided a polymer composition having improved discoloration resistance upon exposure to light comprising a polyphenylene ether, a polyamide, and a combination of (a), a inorganic filler selected from the group consisting of titanium oxide, zinc oxide, zinc sulfide, aluminum oxide, magnesium oxide, titanium oxide coated mica, and metal particles, and (b), an organic dye or pigment which bleaches upon exposure to light, in an amount effective to improve the discoloration resistance.Type: GrantFiled: September 8, 1993Date of Patent: December 26, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Kenji Nagaoka, Hiroshi Hagimori, Yasuro Suzuki, Takashi Sanada
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Patent number: 5459189Abstract: A resin composition having improved resistance to discoloration caused by exposure to light, which comprises (a) 5-95% by weight of a polyphenylene ether alone or in combination with a styrene polymer, (b) 95-5% by weight of a polyamide, and based on 100 parts by weight of the sum of (a) and (b), (c) 0.01-30 parts by weight of one or more agents to improve the compatibility of a polyphenylene ether and a polyamide, (d) 0-50 parts by weight of one or more agents to improve the impact resistance, and (e) 0.1-15 parts by weight of metal particles having 10 .mu.m or less of weight average particle size and 3 or more of aspect ratio, and 60% by weight or more of (e) metal particles being included in (b) a polyamide.Type: GrantFiled: January 24, 1994Date of Patent: October 17, 1995Assignee: Sumitomo Chemical Company, Ltd.Inventors: Hiroshi Hagimori, Yasuro Suzuki, Kaoru Kitadono, Takashi Sanada
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Patent number: 5449721Abstract: Disclosed is a thermoplastic resin composition which comprises:(A) 10-90 parts by weight of a polyphenylene ether resin,(B) 90-10 parts by weight of a polyamide resin,(C) 1-100 parts by weight of a fluorocarbon resin,(D) 0-30 parts by weight of a compatibilizing agent, and(E) 0-100 parts by weight of a rubber-like material, amounts of (C), (D) and (E) being based on 100 parts by weight in total of (A) and (B).The invention provides a thermoplastic resin composition comprising a polyphenylene ether resin and a polyamide resin improved in heat resistance, impact resistance, and flowability, lowered in frictional coefficient and markedly improved in critical PV value by adding a fluorocarbon resin to a PPE/nylon alloy. Further provided is a method for producing a thermoplastic resin composition comprising a polyphenylene ether resin and a polyamide resin which is much improved in slidability.Type: GrantFiled: September 8, 1994Date of Patent: September 12, 1995Assignee: Sumitomo Chemical Co., Ltd.Inventors: Yasuro Suzuki, Yasuhito Ijichi
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Patent number: 5352737Abstract: The present invention provides a resin composition which is excellent in adhesion to coatings and which comprises the following components:(a) a polyphenylene ether in an amount of 10-90 parts by weight,(b) a polyamide in an amount of 90-10 parts by weight,(c) a compatibilizing agent in an amount of 0.01-10 parts by weight based on 100 parts by weight of ((a)+(b)),(d) an unsaturated acid salt of a metal belonging to Groups I-III of the periodic table in an amount of 0.2-10 parts by weight based on 100 parts by weight of ((a)+(b)), and(e) a rubber material in an amount of 0-100 parts by weight based on 100 parts by weight of ((a)+(b)).Type: GrantFiled: December 1, 1993Date of Patent: October 4, 1994Assignee: Sumitomo Chemical Co., Ltd.Inventors: Kenji Nagaoka, Yasuro Suzuki, Kaoru Kitadono
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Patent number: 5284681Abstract: A surface treatment method of a polyamide resin composition molded article is disclosed, comprising bringing the surface of a polyamide resin composition molded article into contact with water, said polyamide resin composition molded article comprising (C) 100 parts by weight of a resin composition comprising (A) from 10 to 80% by weight of a polyamide resin and (B) from 20 to 90% by weight of other thermoplastic resin; and (D) from 0 to 20 parts by weight of at least one modifier selected from a carboxylic acid having at least 2 carboxyl groups in the molecule or a derivative thereof, an amine containing at least 2 nitrogen atom in the molecular, urea or a derivative thereof, and a low-molecular weight polyamide. A coating method of a polyamide resin composition molded article is also disclosed, comprising, after bringing the surface of a resin composition molded article into contact with water, coating the surface with a coating composition.Type: GrantFiled: October 28, 1992Date of Patent: February 8, 1994Assignee: Sumitomo Chemical Co., Ltd.Inventors: Hideo Shinonaga, Kiyoshi Mitsui, Yasuro Suzuki, Satoru Sogabe
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Patent number: 5164435Abstract: A stabilized thermoplastic resin composition is provided which comprises the following components (i), (ii) and (iii):(i) 100 parts by weight, based on the total amount of the following (A), (B) and (C), of a mixture comprising (A) about 10-100% by weight of a polyphenylene ether, (B) 0-about 90% by weight of an alkenyl aromatic resin, and (C) 0-about 90% by weight of a crystalline thermoplastic resin, total amount of (A) and (B) being at least about 15% by weight of the total amount of (A), (B) and (C),(ii) 1-50 parts by weight of an alkenyl aromatic elastomer (non-hydrogenated), and(iii) a stabilizer comprising (D) 0.01-5 parts by weight of a sulfur compound and (E) 0.01-5 parts by weight of at least one phenol compound.Type: GrantFiled: September 19, 1991Date of Patent: November 17, 1992Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroomi Abe, Kenji Nagaoka, Yasuro Suzuki, Takashi Sanada