Patents by Inventor Kouichi Hatada
Kouichi Hatada 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: 7462573Abstract: PROBLEM TO BE SOLVED: To provide an elastic long-fiber non-woven fabric that exhibits excellent elasticity, appropriate stress upon elongation, an excellent anti-blocking property, and an excellent soft feel, and which is suitable for applications to fabric products; and to provide fabric products manufactured from such an elastic long-fiber non-woven fabric. SOLUTION: An elastic long-fiber non-woven fabric comprising composite long fibers comprising at least one of a non-elastomer resin and an elastomer resin, wherein the composite long fibers have a helical structure and an irregular-surface structure; the non-elastomer resin/elastomer resin volume ratio (%) of the composite long fibers falls within a range of 30/70 to 5/95; and the fineness of the composite long fibers is 5 dtex or less; and fabric products manufactured from such an elastic long-fiber non-woven fabric.Type: GrantFiled: February 13, 2003Date of Patent: December 9, 2008Assignees: Chisso Corporation, Chisso Polypro Fiber Company LimitedInventors: Yoshimi Tsujiyama, Hisanobu Minamizawa, Junji Iwata, Kouichi Hatada
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Publication number: 20030162458Abstract: PROBLEM TO BE SOLVED: To provide an elastic long-fiber non-woven fabric that exhibits excellent elasticity, appropriate stress upon elongation, an excellent anti-blocking property, and an excellent soft feel, and which is suitable for applications to fabric products; and to provide fabric products manufactured from such an elastic long-fiber non-woven fabric.Type: ApplicationFiled: February 13, 2003Publication date: August 28, 2003Applicant: Chisso CorporationInventors: Yoshimi Tsujiyama, Hisanobu Minamizawa, Junji Iwata, Kouichi Hatada
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Patent number: 6515037Abstract: A polypropylene base resin composition for foam-molding which use's a propylene•&agr;,&ohgr;-diene base copolymer containing a small amount of &agr;,&ohgr;-diene and obtained by copolymerizing propylene with a specific amount of &agr;,&ohgr;-diene in the presence of a catalyst system for polymerizing olefin comprising a metallocene supported catalyst or a pre-activated metallocene supported catalyst and an organic aluminum compound and which provides a foamed article having uniform and fine foamed cells (bubbles) and a high foaming magnification, a foamable polypropylene base resin composition comprising the propylene•&agr;,&ohgr;-diene base copolymer and a specific amount of a foaming agent, a foamed article obtained by foam-molding the above composition, a production process for the above foamed article and a foam-molded product prepared by heat-molding the above foamed article.Type: GrantFiled: February 16, 2001Date of Patent: February 4, 2003Assignees: Chisso Corporation, Chisso Petrochemical CorporationInventors: Mototake Tsutsui, Hiroyuki Maehara, Kouichi Hatada, Tsutomu Ushioda
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Publication number: 20010020045Abstract: A polypropylene base resin composition for foam-molding which use's a propylene•&agr;,&ohgr;-diene base copolymer containing a small amount of &agr;,&ohgr;-diene and obtained by copolymerizing propylene with a specific amount of &agr;,&ohgr;-diene in the presence of a catalyst system for polymerizing olefin comprising a metallocene supported catalyst or a pre-activated metallocene supported catalyst and an organic aluminum compound and which provides a foamed article having uniform and fine foamed cells (bubbles) and a high foaming magnification, a foamable polypropylene base resin composition comprising the propylene•&agr;,&ohgr;-diene base copolymer and a specific amount of a foaming agent, a foamed article obtained by foam-molding the above composition, a production process for the above foamed article and a foam-molded product prepared by heat-molding the above foamed article.Type: ApplicationFiled: February 16, 2001Publication date: September 6, 2001Applicant: Chisso CorporationInventors: Mototake Tsutsui, Hiroyuki Maehara, Kouichi Hatada, Tsutomu Ushioda
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Patent number: 6156856Abstract: There are provided propylene-ethylene copolymers from which there are made molded articles having excellent heat resistance and films having both low temperature heat-sealing characteristics and stiffness, processes for the production thereof and molded articles. The propylene-ethylene copolymers contain 0.01-15 mol % of an ethylene unit and are characterized by that in the chain structure determined by NMR, triad (PEP), triad (EEE) and a ratio (N.sub..alpha..beta.) of all .alpha., .beta.-methylene carbons to all propylene units are in the specified range, a weight average molecular weight is 50,000-1,500,000 and a molecular weight distribution (Mw/Mn) is 1.2-3.8. The copolymers can be produced by copolymerizing ethylene and propylene in the presence of a catalyst in which the specified chiral transition metal compound (metallocene) and aluminoxane are combined.Type: GrantFiled: September 1, 1998Date of Patent: December 5, 2000Assignee: Chisso CorporationInventors: Jun Saito, Naoshi Kawamoto, Akiko Kageyama, Kouichi Hatada, Yoshiyuki Oogi
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Patent number: 6147152Abstract: A polypropylene resin composition is diclosed which comprises (a) 50-80% by weight of a specific polypropylene/ethylene-propylene copolymer composition, (b) 5-40% by weight of a specific ethylene/.alpha.-olefin copolymer rubber, (c) 1-10% by weight of a specific hydrogenated diene block copolymer, and (d) 10-30% by weight of talc, wherein the polypropylene component of the component (a) has a melt flow rate of 100-1,000 g/10 min and a C.sub.f value (cross fractionation ratio) of not more than 0.5. The resin composition has excellent flowability and can impart excellent rigidity, high-temperature rigidity and impact resistance, and well-balanced combination thereof to the molded articles.Type: GrantFiled: May 4, 1999Date of Patent: November 14, 2000Assignees: Toyota Jidosha Kabushiki Kaisha, Chisso CorporationInventors: Yoshihiro Kanome, Takao Nomura, Kouichi Hatada, Shinei Gima, Teruaki Hayashida, Osamu Kojima, Ken Shimizu, Hiroaki Hase
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Patent number: 6096843Abstract: A process for the production of a high stereoregular polypropylene wherein(a) an isotactic pentad (m m m m) is 0.950 to 0.995,(b) a syndiotactic pentad (r r r r) is 0 to 0.01,(c) a different bond due to 2,1- and 1,3-insertions of propylene monomer is 0 to 0.3 mol %,(d) an absence of a terminal double bond is confirmed,(e) a weight average molecular weight (Mw) is 50,000 to 1,000,000 and(f) a ratio (Mw/Mn) of the weight average molecular weight (Mw) to a number average molecular weight (Mn) is 1.5 to 3.8, (a) to (d) being determined from .sup.13 C NMR spectra, comprising polymerizing propylene in the presence of hydrogen using a catalyst comprising a chiral transition metal compound and an aluminoxane, the transition metal compound being represented by the formula of Q(C.sub.5 H.sub.4-m R.sup.1.sub.m) (C.sub.5 H.sub.4-n R.sup.2.sub.n)MXY wherein (C.sub.5 H.sub.4-m R.sup.1.sub.m) and (C.sub.5 H.sub.4-n R.sup.2.sub.n) represent a substituted cyclopentadienyl group; m and n are an integer of 1 to 3; R.sup.Type: GrantFiled: May 19, 1997Date of Patent: August 1, 2000Assignee: Chisso CorporationInventors: Jun Saito, Naoshi Kawamoto, Akiko Kageyama, Yoshiyuki Oogi, Kouichi Hatada
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Patent number: 6005034Abstract: A propylene-ethylene copolymer composition is obtained which has good moldability and an excellent balance of rigidity, toughness, and impact-strength. The composition has a melt flow rate of 10 to 300 g/10 minutes and is obtained by producing 60 to 95% by weight, based on the weight of whole polymer, of a propylene polymer having a melt flow rate (ASTM D1238) in the range of 100 to 1,000 g/10 minutes and having a ratio (Cf) of integrated values of the propylene polymer dissolved in o-dichlorobenzene at a temperature of lower than 112.degree. C., and a temperature of 112.degree. C. or higher, respectively, of 0.5 or less, by carrying out polymerization of propylene in the presence of a highly stereoregular catalyst and hydrogen in a polymerization step (I), and then producing 5 to 40% by weight, based on the weight of whole polymer, of an ethylene-propylene copolymer by feeding ethylene and propylene to the propylene polymer to react so that the content of ethylene becomes 30 to 80% by weight.Type: GrantFiled: April 30, 1997Date of Patent: December 21, 1999Assignees: Chisso Corpoation, Toyota Jidosha Kabushiki KaishaInventors: Teruaki Hayashida, Shinei Gima, Kouichi Hatada, Osamu Kojima, Ken Shimizu, Hirokazu Nakajima, Takao Nomura, Yoshihiro Kanome, Takeyoshi Nishio
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Patent number: 5874505Abstract: A polypropylene composition comprising 20 to 95% by weight of a stereoregular polypropylene characterized by the specified physical properties determined from .sup.13 C NMR spectra and 5 to 80% by weight of an .alpha.-olefin copolymer comprising 10 to 90% by weight of an .alpha.-olefin and 10 to 90% by weight of at least one of other .alpha.-olefins. The polypropylene composition demonstrates good balance of rigidity and impact resistance, high heat resistance and high toughness, when used as molding materials.Type: GrantFiled: November 28, 1997Date of Patent: February 23, 1999Assignee: Chisso CorporationInventors: Jun Saito, Naoshi Kawamoto, Akiko Kageyama, Kouichi Hatada, Yoshiyuki Oogi, Tsutomu Ushioda
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Patent number: 5708083Abstract: A polyolefin resin composition is disclosed which comprises(a) a crystalline propylene polymer in an amount of 40% or more to less than 95% by weight,(b) an ethylene/.alpha.-olefin rubber in an amount of from 5 to 40% by weight, and(c) a linear or branched specified block copolymer in an amount of from 0.1 to 20% by weight containing a polyethylene block segment A having a melting temperature as measured with a differential scanning calorimeter of from 80.degree. to 120.degree. C. and an ethylene/.alpha.-olefin copolymer block segment B,the total content of components (a), (b), and (c) being 100% by weight, which composition has excellent dispersibility of the rubber used, so that moldings having an excellent balance between rigidity and impact resistance are obtained therefrom, and is hence suitable for use in the field of moldings required to have rigidity and impact resistance.Type: GrantFiled: February 13, 1997Date of Patent: January 13, 1998Inventors: Takanobu Kawamura, Katsuhiko Ohno, Osamu Kojima, Kouichi Hatada, Shinei Gima, Takao Nomura, Takeyoshi Nishio