Patents by Inventor Masahiro Kishine
Masahiro Kishine 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: 20070021022Abstract: The invention provides a nonwoven fabric of crimped conjugate fibers comprising (1) a first propylene-based polymer component and (2) a second propylene-based polymer component, and a laminate of the nonwoven fabric and other nonwoven fabrics or porous films, in which the melting point of the component (1) is higher by at least 20° C. than that of the component (2) a ratio of the two components in melt flow rate (component (2)/component (1)) is in the range of 0.8 to 1.2, and the component ratio expressed by (1)/(2) (by weight) is 50/50 to 5/95. The nonwoven fabric has an excellent bulkiness and softness, is excellent in terms of spinnability and fuzzing resistance, and can be spun by a conventional melt spinning. The laminate has further improved water impermeability and surface smoothness. The nonwoven fabric and the laminate using the same may both be used for disposable diapers or sanitary napkins.Type: ApplicationFiled: April 5, 2006Publication date: January 25, 2007Applicant: Mitsui Chemicals, Inc.Inventors: Masahiro Kishine, Kunihiko Takesue, Hisashi Morimoto
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Publication number: 20040067709Abstract: The invention provides a nonwoven fabric of crimped conjugate fibers comprising (1) a first propylene-based polymer component and (2) a second propylene-based polymer component, and a laminate of the nonwoven fabric and other nonwoven fabrics or porous films, in which the melting point of the component (1) is higher by at least 20° C. than that of the component (2) a ratio of the two components in melt flow rate (component (2)/component (1)) is in the range of 0.8 to 1.2, and the component ratio expressed by (1)/(2) (by weight) is 50/50 to 5/95. The nonwoven fabric has an excellent bulkiness and softness, is excellent in terms of spinnability and fuzzing resistance, and can be spun by a conventional melt spinning. The laminate has further improved water impermeability and surface smoothness. The nonwoven fabric and the laminate using the same may both be used for disposable diapers or sanitary napkins.Type: ApplicationFiled: July 29, 2003Publication date: April 8, 2004Inventors: Masahiro Kishine, Kunihiko Takesue, Hisashi Morimoto
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Patent number: 6489016Abstract: A multilayer film for packaging which is superior in, such as extensible elesticity, ability for adhering onto various surfaces, transparency, clear cutting perforamance, heat-sealability, resistance to fogging, resistance to break-through and ability for restoring from finger pressing and which comprises outer layers made of the outer layer resin composition (I) given below and an inner layer made of an inner layer resin composition composed of a higher melting component (III) and a softening component (IV) interposed between the outer layers, wherein the resin composition (I) comprises 59.5-99.5% by weight of (A) an ethylene/&agr;-olefin copolymer component, which is composed of at least one copolymer of ethylene and an &agr;-olefin having 3-20 carbon atoms and which has a melt flow rate (MFR) of 0.1-10 g/10 min. and a density of 0.850 g/cm3-0.910 g/cm3; 0-40% by weight of (B) a high-pressure process low density poly-ethylene having a density of 0.915-0.930 g/cm3, and 0.Type: GrantFiled: February 28, 2001Date of Patent: December 3, 2002Assignee: Mitsui Chemicals, Inc.Inventor: Masahiro Kishine
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Patent number: 6403708Abstract: Crystalline polypropylene contains components insoluble in 64° C. decane satisfying the characteristics involving intrinsic viscosity; Mz/Mn; pentadvisotacticity, D value and Mw/Mn, are excellent in hardness and rigidity, high in melt tension, and excellent in molding properties. Processes for preparing such crystalline polypropylenes, and polypropylene compositions and thermoformed products that contain such crystalline polypropylenes are also described. The number-average molecular weight Mn of the components insoluble in 64° C. decane is preferably 25000 or more.Type: GrantFiled: November 25, 1998Date of Patent: June 11, 2002Assignee: Mitsui Chemicals INCInventors: Satoru Moriya, Shinya Matsunaga, Shinichi Kojoh, Kenji Sugimura, Masahiro Kishine, Norio Kaneshige, Mamoru Kioka, Teruhisa Kojima
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Patent number: 6355348Abstract: The conjugate fiber nonwoven fabric of the present invention comprises conjugate fibers, preferably core-sheath-type or side-by-side-type conjugate fibers, composed of a polyethylene-based resin (A) having a higher melting point in the range of 120 to 135° C. and a lower melting point in the range of 90 to 125° C., which is lower than the above higher melting point at least by 5° C., and a high-melting point resin (B) whose melting point is higher than that of the above polyethylene-based resin (A) by 10° C. or more, the component ratio by weight of the polyethylene-based resin (A) to the high-melting point resin (B) (A/B) being in the range of 50/50 to 10/90, and the polyethylene-based resin (A) forming at least part of the surface of the fiber longitudinally continuously. This conjugate fiber nonwoven fabric has an excellent softness and a high strength, and it is suitably used as a nonwoven fabric for sanitary materials.Type: GrantFiled: August 11, 2000Date of Patent: March 12, 2002Assignee: Mitsui Chemicals, Inc.Inventors: Kunihiko Takesue, Masahiro Kishine
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Publication number: 20010025090Abstract: The present invention presents crystalline polypropylenes that contain components insoluble in 64° C. decane that satisfy the following characteristics (1) to (4) and are excellent in hardness and rigidity, high in melt tension, and excellent in molding properties, process for preparing such crystalline polypropylenes, and polypropylene compositions and thermoformed products that contain such crystalline polypropylenes.Type: ApplicationFiled: November 25, 1998Publication date: September 27, 2001Inventors: SATORU MORIYA, SHINYA MATSUNAGA, SHINICHI KOJOH, KENJI SUGIMURA, MASAHIRO KISHINE, NORIO KANESHIGE, MAMORU KIOKA, TERUHISA KOJIMA
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Publication number: 20010014384Abstract: A multilayer film for packaging which is superior in, such as extensible elasticity, ability for adhering onto various surfaces, transparency, clear cutting performance, heat-sealability, resistance to fogging, resistance to break-through and ability for restoring from finger pressing and which comprises outer layers made of the outer layer resin composition (I) or (II) given below and an inner layer made of an inner layer resin composition composed of a higher melting component (III) and a softening component (IV) interposed between the outer layers, whereinType: ApplicationFiled: February 28, 2001Publication date: August 16, 2001Inventor: Masahiro Kishine
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Patent number: 6063871Abstract: An ethylene type polymer composition comprising 20 to 90% by weight of an ethylene type polymer (A) and 80 to 10% by weight of an ethylene type polymer (B). The ethylene type polymer (A) is an ethylene polymer or a copolymer of ethylene and an .alpha.-olefin of 3 to 20 carbon atoms and has a density (d.sub.A) of 0.96 to 0.980 g/cm.sup.3 and an intrinsic viscosity (.eta.) of 0.5 to 3.0 dl/g. The ethylene type polymer (B) is an ethylene polymer or a copolymer of ethylene and an .alpha.-olefin of 3 to 20 carbon atoms and has a density (d.sub.B) of 0.91 to 0.965 g/cm.sup.3 and an intrinsic viscosity (.eta.) of 1.0 to 10 dl/g. At least one of the ethylene type polymers (A) and (B) is an ethylene type polymer prepared by the use of a metallocene catalyst. The ethylene type polymer composition has the properties: d.sub.A /d.sub.B is larger than 1; the density is 0.940 to 0.970 g/cm.sup.3 ; the MFR is of 0.005 to 20 g/10 min; the MFR and the melt tension (MT) satisfy the relation log(MT).gtoreq.-0.4 log(MFR)+0.Type: GrantFiled: March 24, 1997Date of Patent: May 16, 2000Assignee: Mitsui Petrochemical Industries, Inc.Inventors: Masahiro Kishine, Keiji Watanabe, Toshiyuki Tsutsui, Katsunori Yano
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Patent number: 5770655Abstract: A polymer composition comprising ?A! a polymer selected from a copolymer of .alpha.-olefin having at least 2 carbon atoms and a specific cyclic olefin, a ring-opening polymer of said specific cyclic olefin and a hydroganted, ring-opening polymer thereof and ?B! a core-shell elastomer containing 40 to 85 parts of weight of a core component which comprises a styrene-butadiene copolymer and 15 to 60 parts by weight of a shell component which comprises a copolymer of an acrylate or methacrylate having a specific cyclic structure, a monovinyl aromatic monomer, other monovinyl monomer and a plyfunctional monomer. This polymer composition is excellent in transparency and impact resistance.Type: GrantFiled: August 14, 1996Date of Patent: June 23, 1998Assignees: Mitsui Petrochemical Industries, Ltd., Hoechst AktiengesellschaftInventors: Toshihiro Sagane, Masayuki Okabe, Masahiro Kishine
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Patent number: 5574100Abstract: A polymer composition comprising [A] a polymer selected from a copolymer of .alpha.-olefin having at least 2 carbon atoms and a specific cyclic olefin, a ring-opening polymer of said specific cyclic olefin and a hydroganted, ring-opening polymer thereof and [B] a core-shell elastomer containing 40 to 85 parts of weight of a core component which comprises a styrene-butadiene copolymer and 15 to 60 parts by weight of a shell component which comprises a copolymer of an acrylate or methacrylate having a specific cyclic structure, a monovinyl aromatic monomer, other monovinyl monomer and a plyfunctional monomer. This polymer composition is excellent in transparency and impact resistance.Type: GrantFiled: March 9, 1995Date of Patent: November 12, 1996Assignees: Mitsui Petrochemical Industries, Ltd., Hoechst AktiengesellschaftInventors: Toshihiro Sagane, Masayuki Okabe, Masahiro Kishine