Patents by Inventor Hideo Shinonaga
Hideo Shinonaga 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: 5624991Abstract: A polypropylene resin composition, which exhibits an excellent coating adherence, high rigidity, high impact strength at low temperatures, prominent heat resistance and excellent appearance of moldings even without effecting a treatment with trichloroethane as a pretreatment step before coating, comprises 30 to 92% by weight crystalline ethylene propylene block copolymer (A), 5 to 30% by weight ethylene-.alpha. olefin copolymer rubber (B), 3 to 20% by weight ethylene-butene-1 copolymer (C) having the following characteristics:(C1) a density of 0.870 to 0.915 g/cm.sup.3,(C2) a melt index at 190.degree. C. of 5 to 30 g/10 minutes, and(C3) a melt peak at 100.degree. C. or higher as determined in the thermogram with increasing temperature by a Differential Scanning Calorimeter (DSC),and 0 to 20% by weight inorganic filler (D).Type: GrantFiled: October 24, 1994Date of Patent: April 29, 1997Assignee: Sumitomo Chemical Company Limited.Inventors: Hiroyuki Harada, Yuji Ikezawa, Susumu Kanzaki, Hideo Shinonaga, Satoru Sogabe
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Patent number: 5585187Abstract: The present invention relates to;a method for surface treating a polypropylene resin composition molded article, which comprises irradiating a molded article with ultraviolet light having an irradiation wavelength of 300 nm or less, said molded article being obtained from a polypropylene resin composition which comprises:(A) 15-92% by weight of a crystalline propylene-ethylene block copolymer resin,(B) 5-40% by weight of an ethylene-propylene copolymer rubber,(C) 1-15% by weight of a hydroxyl group-containing propylene oligomer, and(D) 2-30% by weight of an inorganic filler;a method for paint-coating a polypropylene resin composition molded article, which comprises irradiating a molded article with ultraviolet light having an irradiation wavelength of 300 nm or less and coating the irradiated surface with a paint, said molded article being obtained from a polypropylene resin composition which comprises said components (A), (B), (C) and (D) above-mentioned; anda paint-coated article obtained by said method forType: GrantFiled: May 12, 1995Date of Patent: December 17, 1996Assignee: Sumitomo Chemical Company, LimitedInventors: Hideo Shinonaga, Satoru Sogabe
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Patent number: 5573856Abstract: A polypropylene composition containing:(A) 10-95 parts by weight of a crystalline polypropylene,(B) 5-90 parts by weight of an ethylene-propylene copolymer rubber,(C) 1-30 parts by weight, per 100 parts by weight of the mixture of said crystalline polypropylene and ethylene-propylene copolymer rubber, of a hydroxyl group-containing propylene oligomer, andoptionally an inorganic filler in an amount of up to 40 parts by weight per 100 parts by weight of the mixture of said crystalline polypropylene and ethylene-propylene copolymer rubber and a suitable amount of an additive or auxiliary, has an improved compatibility with paint-coatings, and the shaped article formed from said composition can easily be paint-coated by simply treating it with water or an organic solvent instead of laying a primer layer onto the article before applying a paint thereon.Type: GrantFiled: May 23, 1995Date of Patent: November 12, 1996Assignee: Sumitomo Chemical Company LimitedInventors: Hideo Shinonaga, Satoru Sogabe
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Patent number: 5556910Abstract: A polypropylene resin composition, which exhibits an excellent coating adherence, high rigidity, high impact strength at low temperatures, prominent heat resistance and excellent appearance of moldings as required for coatings on the exterior parts of automobiles even without effecting a treatment with trichloroethane as pretreatment step before coating and without a primer as undercoating and which can be baked at a temperature of 130.degree. C. or higher, comprises 15 to 92% by weight crystalline ethylene propylene block copolymer, 5 to 40% by weight ethylene propylene copolymer rubber, 1 to 15% by weight polypropylene oligomer containing hydroxyl group, and 2 to 30% by weight inorganic filler.Type: GrantFiled: October 18, 1994Date of Patent: September 17, 1996Assignee: Sumitomo Chemical Company Limited.Inventors: Hiroyuki Harada, Yuji Ikezawa, Susumu Kanzaki, Hideo Shinonaga, Satoru Sogabe
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Patent number: 5496863Abstract: A method of crosslinking a rubber or plastic molding is described, which comprises irradiating the molding with electron beams to thereby limitedly crosslink only the surface of the molding. The molding thus-treated has excellent shape-sustaining properties and good surface appearance. Thus it is expected to find many applications in various fields.Type: GrantFiled: March 12, 1991Date of Patent: March 5, 1996Assignee: Sumitomo Chemical Company, Ltd.Inventors: Yoshihiko Kitagawa, Tadashi Jinno, Masashi Aoshima, Taisuke Okita, Hideo Shinonaga, Kaoru Kitadono
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Patent number: 5462987Abstract: A polypropylene composition containing:(A) 10-95 parts by weight of a crystalline polypropylene,(B) 5-90 parts by weight of an ethylene-propylene copolymer rubber,(C) 1-30 parts by weight, per 100 parts by weight of the mixture of said crystalline polypropylene and ethylene-propylene copolymer rubber, of a hydroxyl group-containing propylene oligomer, andoptionally an inorganic filler in an amount of up to 40 parts by weight per 100 parts by weight of the mixture of said crystalline polypropylene and ethylene-propylene copolymer rubber and a suitable amount of an additive or auxiliary, has an improved compatibility with paint-coatings, and the shaped article formed from said composition can easily be paint-coated by simply treating it with water or an organic solvent instead of laying a primer layer onto the article before applying a paint thereon.Type: GrantFiled: December 3, 1993Date of Patent: October 31, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Hideo Shinonaga, Satoru Sogabe
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Patent number: 5451642Abstract: A thermoplastic resin composition containing a polyamide resin composition (C) consisting of a polyamide resin (A) and another thermoplastic resin (B) and at least one modifier (D) is excellent in coatability, mechanical properties, linear expansion coefficient and appearance, can be molded into an article which comprises the polyamide resin (C), wherein the ratio of the percent occupied area of the polyamide resin on the surface of the article to the weight percentage of the polyamide in the polyamide resin composition (C) is not less than 1.2, and/or the ratio of the percent concentration of the polyamide resin on the surface of the article determined on the basis of the nitrogen concentration on the surface of the article to the weight percentage of the polyamide in the polyamide resin composition (C) is not less than 1,2, which article is suited for electric and electronic parts and automobile parts such as a bumper, fender and wheel cover.Type: GrantFiled: December 23, 1994Date of Patent: September 19, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroomi Abe, Takeshi Fujii, Kiyoshi Mitsui, Hideo Shinonaga, Satoru Sogabe, Satoru Hosoda, Keitaro Kojima
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Patent number: 5296273Abstract: A method for coating a polypropylene resin molding is disclosed, comprising irradiating the surface of a molding of a polypropylene resin selected from a polypropylene and a propylene-ethylene block copolymer with an ultraviolet light having an irradiating wavelength in the region of 300 nm or less, coating the irradiated surface with a primer, and further coating the coated surface with a coating material. A method for coating a polypropylene resin molding is also disclosed, comprising coating the surface of a molding of a polypropylene resin selected from a polypropylene and a propylene-ethylene block copolymer with a primer, irradiating the coated surface with an ultraviolet light having an irradiating wavelength in the region of 300 nm or less, and further coating the irradiated surface with a coating material.Type: GrantFiled: November 20, 1991Date of Patent: March 22, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroomi Abe, Hideo Shinonaga, Kyoji Suzuki, Satoru Sogabe
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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: 5273789Abstract: The present invention provides a method which enables the surface of a molded article of a polypropylene resin to be modified to a surface suitable for coating, bonding, printing, etc. A molded article of a polypropylene resin comprising polypropylene, an ethylene-propylene copolymer rubber and an ethylene-acrylic acid or ethylene-methacrylic acid copolymer and optionally a filler is irradiated in the air with a light from a synthetic quartz low pressure mercury lamp having an output of 200 W for 60 sec with the distance between the surface of the molded article and the lamp being kept at about 10 cm.Type: GrantFiled: August 7, 1992Date of Patent: December 28, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Hideo Shinonaga, Satoru Sogabe
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Patent number: 5260366Abstract: A thermoplastic elastomer composition superior in moldability and appearance, little in anisotropy of mechanical properties, especially, tensile strength and retaining low temperature impact strength, is obtained by previously melt-kneading an intermediate composition comprising (a) 100 parts by weight of a selectively hydrogenated block copolymer which has at least two mono-alkenyl or mono-alkenylidene aromatic hydrocarbon polymer blocks A having a number-average molecular weight of 25,000-35,000 and at least one partially or completely hydrogenated aliphatic conjugated diene hydrocarbon polymer block B having a number-average molecular weight of 100,000-150,000, (b) 50-150 parts by weight of an extender oil and (c) 0-50 parts by weight of polypropylene I, then adding, to the kneaded intermediate composition, (d) polypropylene II containing at least 35% by weight of a propylene-ethylene block copolymer having a melt flow rate of 10-30 g/10 min.Type: GrantFiled: August 5, 1991Date of Patent: November 9, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Tatsuyuki Mitsuno, Hideo Shinonaga, Masashi Yamamoto
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Patent number: 5185188Abstract: A method for surface treating a resin composition molded article and a method for coating a resin composition molded article are disclosed, which comprise irradiating a molded article with ultraviolet light having an irradiation wavelength in the region of 300 nm or less and, if desired, coating the thus UV-irradiated surface with a coating, the molded article being obtained from a resin composition comprising (I) 100 parts by weight of a resin composition comprising (A) from 5 to 99.5% by weight of a polypropylene resin selected from the group consisting of polypropylene, modified polypropylene, and a modified polypropylene/polypropylene composition and (B) from 0.Type: GrantFiled: November 21, 1990Date of Patent: February 9, 1993Assignee: Sumitomo Chemical Co., Ltd.Inventors: Hiroomi Abe, Hideo Shinonaga, Kiyoshi Mitsui, Satoru Sogabe
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Patent number: 5182336Abstract: The present invention provides a thermoplastic resin composition which comprises:(i) at least one compatibilizing agent in an amount effective for compatibilization,(ii) (A) a polyphenylene ether in an amount of about 40-100% by weight based on the total amount of (A) and (B) and(B) a homopolymer of alkenyl aromatic compound or a random copolymer of alkenyl aromatic compound and unsaturated compound in an amount of 0-about 60% by weight based on the total amount of (A) and (B), the total amount of (A) and (B) being about 10% by weight or more based on total amount of all polymer components,(iii) at least one polyamide in an amount more than the amount required for forming a continuous phase, and(iv) a compound having a molecular weight of 2,000 or less, containing nitrogen element, and having ring opening or condensation polymerizability or reactivity with acid or amine.Type: GrantFiled: December 7, 1990Date of Patent: January 26, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Hiroomi Abe, Kenji Nagaoka, Taichi Nishio, Hideo Shinonaga, Takashi Sanada
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Patent number: 5139817Abstract: A method for surface treating a thermoplastic resin shaped article is disclosed, which comprises irradiating a surface of the shaped article with an ultraviolet light having a wavelength of 300 nm or less, said shaped article being obtained from a resin composition comprising (I) 100 parts by weight of a resin comprising from 5 to 100% by weight of a polyphenylene ether resin, a mixture of a polyphenylene ether resin and a styrene resin; or a graft copolymer of a polyphenylene ether resin and styrene and from 95 to 0% by weight of at least one thermoplastic resin selected from the group consisting of a polyamide resin and a saturated polyester resin; (II) from ) 0 to 50 parts by weight of a rubbery substance; (III) from 0 to 50 parts by weight of an inorganic filler and/or glass fibers; and (IV) from 0 to 10 parts by weight of at least one compatibilizer for improving the compatibility between said polyphenylene ether resin and said polyamide resin and/or saturated polyester resin.Type: GrantFiled: March 13, 1991Date of Patent: August 18, 1992Assignee: Sumitomo Chemical Co., Ltd.Inventors: Hiroomi Abe, Hideo Shinonaga, Kaoru Kitadono, Yasuro Suzuki, Satoru Sogabe
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Patent number: 5132131Abstract: A method for treating the surface of a molded article, which comprises a combination of the steps of:providing a molded article made of a thermoplastic elastomer composition obtained by a thermal treatment of a mixture in the presence of an organic peroxide, which mixture is comprised of (A) an oil-extended olefinic copolymer rubber of an olefinic copolymer rubber having a Mooney viscosity (ML.sub.1+4 100.degree. C.) of 90-200 and a mineral oil type softening agent, (B) an olefinic plastic, and (C) a bismaleimide compound, the ratio by weight of (A) the oil-extended olefinic copolymer rubber to (B) the olefinic plastic, A/B, being 24/76-80/20, the content of (C) the bismaleimide compound being 0.Type: GrantFiled: April 10, 1991Date of Patent: July 21, 1992Assignees: Director-General of Agency of Industrial Science and Technology, Sumitomo Chemical Co., Ltd.Inventors: Kohichiroh Katoh, Hideo Shinonaga, Kyoji Suzuki, Satoru Sogabe
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Patent number: 5077082Abstract: A shaped body formed of a polypropylene resin is surface-treated by a method which includes the steps of:providing a shaped body formed of a composition containing (A) 5-95% by weight of a specific propylene-ethylene block copolymer and (B) 5-95% by weight of a specific ethylene-propylene copolymer rubber;contacting a surface of the shaped body with a UV-ray absorbing liquid at a temperature and for a period of time sufficient to swell the surface; andirradiating UV rays having wavelengths of 300 nm or less on the swollen surface thereby increasing the surface energy of the surface of the shaped body. The thus treated shaped body is ready for coating with a coating material.Type: GrantFiled: April 9, 1990Date of Patent: December 31, 1991Assignees: Director-General of Agency of Industrial Science and Technology, Sumitomo Chemical Co., Ltd.Inventors: Koichiroh Katoh, Tatasuyuki Mitsuno, Hideo Shinonaga, Akio Daimon
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Patent number: 5032459Abstract: According to the present invention, there is provided a modified polyolefin resin having the following merits:(1) The amount of bound unsaturated carboxylic acid, a derivative thereof of unsaturated epoxy compound is high.(2) The change of the melt flow rate during the modification is small.(3) The physical properties are of high grade.(4) The coating affinity with urethane coatings and resistance to falling off of the coating layer are excellent.The modified polyolefin resin of the present invention can be used for adhesives, covering materials, binders, laminate bonding agent and polymer alloy constituents.Type: GrantFiled: September 4, 1990Date of Patent: July 16, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshiki Toyoshima, Mitsuyuki Okada, Takeshi Fujii, Kentaro Yamaguchi, Mitsuji Tsuji, Hideo Shinonaga
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Patent number: 4946896Abstract: There is provided a thermoplastic elastomer composition having excellent surface processabilities such as adhesion, paintability and printability together with impact resistance. This composition comprises (A) 20-80% by weight of a polypropylene resin, (B) 5-38% by weight of an ethylene copolymer having 82-98.7 mol % of an ethylene unit, 1-15 mol % of an ester unit selected from alkyl acrylate and methacrylate having an alkyl group of 1-8 carbon atoms and 0.3-3 mol % of an unsaturated dicarboxylic acid anhydride unit and (C) 5-70% by weight of ethylene-propylene and/or ethylene-propylene-non-conjugated diene copolymer rubber which contain 50-85 mol % of an ethylene unit and have a Mooney viscosity at 100.degree. C. of 20-100 and an iodine value of 20 or less.Type: GrantFiled: November 1, 1988Date of Patent: August 7, 1990Assignee: Sumitomo Chemical Company, Ltd.Inventors: Tatsuyuki Mitsuno, Hideo Shinonaga, Akio Daimon
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Patent number: 4902738Abstract: A thermoplastic elastomer composition which is excellent in melt-flowability and is able to afford injection molded articles superior in appearance is provided, which is a mixture comprising (A) 20-50 parts by weight of an olefinic copolymer rubber, (B) 50-80 parts by weight of an olefinic plastic having a ratio of melt index M.sub.1 /M.sub.0 of 2-50 wherein M.sub.0 is a melt index of the plastic before subjected to thermal decomposition with organic peroxide and M.sub.1 is a melt index of the plastic after subjected to the thermal decomposition with the organic peroxide, sum of (A) and (B) being 100 parts by weight, (C) 5-25 parts by weight of a mineral oil and (D) 0.1-3 parts by weight of a bismaleimide compound, said mixture being dynamically heat treated with (E) an organic peroxide after bismaleimide compound (D) is homogeneously dispersed in the mixture.Type: GrantFiled: November 30, 1988Date of Patent: February 20, 1990Assignee: Sumitomo Chemical Company LimitedInventors: Tatsuyuki Mitsuno, Hideo Shinonaga, Akio Daimon, Satoru Hosoda
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Patent number: 4868226Abstract: A process for producing a filler-containing polypropylene resin composition is disclosed. The composition comprises (a) from 27 to 87% by weight of a polypropylene resin, (b) from 3 to 15% by weight of a modified polypropylene resin containing from 0.1 to 3 mol% of an unsaturated dicarboxylic acid anhydride repeating unit, (c) from 5 to 30% by weight of an ethylene copolymer composed of from 82 to 98.7 mol% of an ethylene repeating unit, from 1 to 15 mol% of an ester repeating unit selected from alkyl acrylates and alkyl methacrylates having from 1 to 8 carbon atoms in the alkyl moiety thereof, and from 0.3 to 3 mol% of an unsaturated dicarboxylic acid anhydride repeating unit, and (d) from 5 to 40% by weight of a filler. The process comprises melt-mixing the components (a), (b), and (d) and then melt-mixing the resulting mixture with the component (c).Type: GrantFiled: April 13, 1988Date of Patent: September 19, 1989Assignee: Sumitomo Chemical CompanyInventors: Tatsuyuki Mitsuno, Hideo Shinonaga, Akio Daimon