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81. 发明专利

JP2000239426A POROUS FILM WITH MINUTE PORE 失效
公开(公告)号：JP2000239426A
公开(公告)日：2000-09-05
申请号：JP4513699
申请日：1999-02-23
申请人： NITTO DENKO CORP
发明人： YAMAMOTO KAZUNARI , UETANI YOSHIHIRO , NOMI TOSHISUKE , ICHIKAWA TOMOAKI , YAMAGUCHI MUTSUKO
IPC分类号： C08J9/00 , H01M2/16
摘要： PROBLEM TO BE SOLVED: To provide a porous film with minute pores having high film strength, low shutdown temp. and shrinkage, excellent in filtration property, and much safer, while keeping appropriate air permeability and porosity as a separator for secondary cell, etc. SOLUTION: This porous film with minute pores is a resin comprising 50-90 wt.% polyolefin (A) contg. not less than 1 wt.% ultrahigh mol.wt. polyolefin having a weight average mol.wt. of not smaller than one million, and 10-50 wt.% polymer (B) contg. a polyolefin in its main chain and an incompatible group in its side chain, and the polymer (B) is dispersed in the polyolefin (A) as a domain having an average particle diameter of 0.01-0.1 μm.

82. 发明专利

JP2000230072A PREPARATION OF POROUS FILM 失效
公开(公告)号：JP2000230072A
公开(公告)日：2000-08-22
申请号：JP3193899
申请日：1999-02-09
申请人： NITTO DENKO CORP
发明人： OIZUMI SHINICHI , KISHII YUTAKA , ICHIKAWA TOMOAKI , FUJITA SHIGERU
IPC分类号： C08J9/00 , B29C48/90 , B29C55/18 , B29C67/20 , B29K23/00 , B29K105/04 , B29L7/00 , C08J9/28 , H01M2/16 , B29C47/90
摘要： PROBLEM TO BE SOLVED: To provide a preparation process of a porous film which has a uniform thickness, a large strength, a high specific surface area and a large pore volume and also a high ion permeability and an excellent high-speed charge-discharge property. SOLUTION: The titled process comprises steps wherein a resin composition comprising a polyolefin containing an extremely high-molecular weight polyolefin having a weight average molecular weight of 5×105 or larger and a solvent having a solidifying point of -10 deg.C or lower is melt mixed, the obtained melt mixed product is allowed to pass through a cooled sizing die and molded into a sheet form, and the obtained sheet form molded product is calendered in a belting pressing machine, stretched and subjected to a solvent removal treatment.

83. 发明专利

JP2000219769A BATTERY SEPARATOR POROUS FILM 失效
公开(公告)号：JP2000219769A
公开(公告)日：2000-08-08
申请号：JP2250599
申请日：1999-01-29
申请人： NITTO DENKO CORP
发明人： ICHIKAWA TOMOAKI , YAMAMOTO KAZUNARI , NOMI TOSHISUKE , UETANI YOSHIHIRO , YAMAGUCHI MUTSUKO
IPC分类号： C08J9/28 , H01M2/16
摘要： PROBLEM TO BE SOLVED: To provide battery separator porous films high in piercing strength while having a high porosity and, in addition, low in the shutdown temperature. SOLUTION: Battery separator porous films are composed of a resin composition comprising (a) 50-90 wt.% polyolefin resin composition containing not less than 1 wt.% ultra-high-molecular-weight polyolefin resin having a weight average molecular weight of not smaller than 1×106, (b) 5-15 wt.% saturated thermoplastic elastomer composed of a copolymer of 70-90 wt.% at least one block selected from an ethylene block, a hydrogenated butadiene block, and a hydrogenated isoprene block, and 10-30 wt.% a styrene block and having a weight average molecular weight of 1×104-2×105, and (c) 5-35 wt.% polyolefin thermoplastic elastomer having a peak temperature by a differential scanning calorimeter of 80-150 deg.C and a melt flow rate(MFR) at 190 deg.C under a load of 2.16 kg of not greater than 10 g/10 min.

84. 发明专利

JP2000219768A PRODUCTION OF POROUS FILM 失效
公开(公告)号：JP2000219768A
公开(公告)日：2000-08-08
申请号：JP2544899
申请日：1999-02-02
申请人： NITTO DENKO CORP
发明人： FUJITA SHIGERU , OIZUMI SHINICHI , KISHII YUTAKA , ICHIKAWA TOMOAKI
IPC分类号： C08J9/00 , C08J9/26 , H01M2/16
摘要： PROBLEM TO BE SOLVED: To provide a process for producing porous films suitable as electric automobile battery separators. SOLUTION: A process for producing porous films comprises kneading at 115-240 deg.C a solution obtained by heating a mixture of 5-30 wt.% ultra-high- molecular-weight polyolefin resin and 95-70 wt.% solvent having a freezing point of not higher than -10 deg.C to mold a first gel sheet at a temperature of not higher than the freezing point of the solvent, separately kneading at 115-240 deg.C a solution obtained by heating a mixture of 5-30 wt.% ultra-high- molecular-weight polyolefin resin and 95-70 wt.% solvent having a freezing point of not higher than -10 deg.C to mold a second sheet, then applying the first gel sheet on to the second sheet at its surface temperature of (M+30) deg.C to (M-10) deg.C (wherein M is a melting of the ultra-high-molecular-weight polyolefin resin of the second sheet), then molding the resulting laminate into an integrally laminated gel sheet at a temperature of not higher than the freezing point of the solvent used in the second sheet, subsequently biaxially stretching the integrally laminated sheet at a temperature of (M+5) deg.C to (M-30) deg.C, and subjecting the stretched sheet to desolvation treatment.

85. 发明专利

JP2000109586A PRODUCTION OF POROUS FILM 失效
公开(公告)号：JP2000109586A
公开(公告)日：2000-04-18
申请号：JP28410098
申请日：1998-10-06
申请人： NITTO DENKO CORP
发明人： FUJITA SHIGERU , YAMAMOTO KAZUNARI , KISHII YUTAKA , ICHIKAWA TOMOAKI , NOMI TOSHISUKE , YAMAGUCHI MUTSUKO
IPC分类号： C08J7/00 , C08J9/00 , C08J9/28 , C08L23/04
摘要： PROBLEM TO BE SOLVED: To obtain a porous film having high strength, high specific surface area, high pore volume, large average bent route ratio and excellent ion permeability by biaxially orientating a gelatinous sheet composed of an ultrahigh- molecular-weight polyolefin resin under specific conditions and desolvating the orientated film. SOLUTION: A mixture comprising 5-30 wt.% of an ultrahigh-molecular- weight polyolefin resin having >=5×105 weight-average molecular weight(Mw) or a polyolefin resin composition composed of >=15 wt.% of the polyolefin resin and a resin having

86. 发明专利

JP2015179814A 封止用熱硬化性樹脂シート及び中空パッケージの製造方法审中-公开
公开(公告)号：JP2015179814A
公开(公告)日：2015-10-08
申请号：JP2014227124
申请日：2014-11-07
申请人： NITTO DENKO CORP
发明人： TOYODA HIDESHI , HABU TSUYOSHI , ICHIKAWA TOMOAKI , SHIMIZU YUSAKU
IPC分类号： H01L23/29 , B81C1/00 , B81C99/00 , H01L21/56 , H01L23/02 , H01L23/31 , H03H3/08 , H03H9/25
摘要：【課題】被着体と電子デバイスとの間の空隙に、封止用熱硬化性樹脂シートを構成する材料が流入し難い封止用熱硬化性樹脂シート及び中空パッケージの製造方法を提供する。【解決手段】中空パッケージを製造するために使用する封止用熱硬化性樹脂シートに関する。封止用熱硬化性樹脂シートに関し、封止用熱硬化性樹脂シートの硬化物は、第1の樹脂成分を主成分として含むマトリックス部及び第2の樹脂成分を主成分として含むドメイン部を含む海島構造を備え、マトリックス部がドメイン部よりも柔らかい。【選択図】図1

87. 发明专利

JP2003119306A LOW-SHRINKABLE FINE POROUS FILM AND METHOD FOR PRODUCING THE SAME 审中-公开
公开(公告)号：JP2003119306A
公开(公告)日：2003-04-23
申请号：JP2001314076
申请日：2001-10-11
申请人： NITTO DENKO CORP
发明人： EMORI HIDEYUKI , ICHIKAWA TOMOAKI , NOMI TOSHISUKE , YAMAGUCHI MUTSUKO
IPC分类号： C08J9/00 , H01M2/16 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To obtain a safer low-shrinkable microporous film having a low shrinkage percentage even under a high-temperature condition, excellent basic characteristics of film such as air permeability, etc., to provide a method for producing the same, to obtain a separator for a battery comprising the low-shrinkable microporous film and a lithium ion secondary battery obtained by using the low-shrinkable microporous film as a separator for a battery. SOLUTION: This low-shrinkable microporous film has

88. 发明专利

JP2000306567A SEPARATOR FOR ALKALINE BATTERY AND MANUFACTURE THEREOF 失效
公开(公告)号：JP2000306567A
公开(公告)日：2000-11-02
申请号：JP11122499
申请日：1999-04-19
申请人： NITTO DENKO CORP
发明人： OTANI AKIRA , URAIRI MASAKATSU , ICHIKAWA TOMOAKI , YAMAMURA TAKASHI
IPC分类号： C08J9/00 , H01M2/16
摘要： PROBLEM TO BE SOLVED: To provide a separator for alkaline battery excellent in air permeability, strength and an electrolyte holding property. SOLUTION: In this manufacturing method, a polyolefin porous sheet having tensile strength of 500 kg/cm2 or more is produced by punching a polyolefin porous sheet having 50 s/100 ml or more of air permeability measured by the Gurley method of JIS P 8117 to have 10 cm2/(cm2.s) or more measured by a fragile type tester of JISL 1096. Punching the polyolefin porous sheet is preferably conducted wherein a large pore ranging in an average pore diameter of 100 μm has a rate of 300-2000/cm2. The electrolyte holding property of the punched polyolefin porous sheet is preferably 200 mg/cm3 or more.

89. 发明专利

JP2000248094A POROUS FILM AND ITS PRODUCTION 失效
公开(公告)号：JP2000248094A
公开(公告)日：2000-09-12
申请号：JP5152699
申请日：1999-02-26
申请人： NITTO DENKO CORP
发明人： NOMI TOSHISUKE , YAMAGUCHI MUTSUKO , ICHIKAWA TOMOAKI , YAMAMOTO KAZUNARI
IPC分类号： C08J9/00
摘要： PROBLEM TO BE SOLVED: To provide a porous film resistant to thermal shrinkage and having high strength and high porosity and provide its production process. SOLUTION: The porous film is composed of an ultra-high molecular weight polyolefin having a weight-average molecular weight of >=1×106 and a weight- average molecular weight/number-average molecular weight ratio of =40% and the thermal shrinkage of =1×106 and a weight-average molecular weight/number-average molecular weight ratio of

90. 发明专利

JP2000246732A MANUFACTURE OF POLYOLEFIN MELT-KNEADED MATTER AND POLYOLEFIN SHEET 失效
公开(公告)号：JP2000246732A
公开(公告)日：2000-09-12
申请号：JP5152599
申请日：1999-02-26
申请人： NITTO DENKO CORP
发明人： KISHII YUTAKA , OIZUMI SHINICHI , ICHIKAWA TOMOAKI , FUJITA SHIGERU
IPC分类号： C08J5/18 , B29B7/42 , B29B7/48 , B29B7/72
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of polyolefin melt-kneaded matter that can obtain melt-kneaded matter having a solvent dispersed finely evenly in polyolefin at high discharge quantity, and a polyolefin sheet obtained by the polyolefin melt-kneaded matter. SOLUTION: The manufacturing method of polyolefin melt-kneaded matter is to melt-knead resin composition containing polyolefin and a solvent by the use of a continuous type kneading extruding machine having two or more kneading parts, in which the manufacturing method of polyolefin melt-kneaded matter is featured that resin composition contains ultra-high-molecular-weight polyethylene having a weight average molecular weight of 5×105 or more by 5 wt.%, and melt-kneading at a first kneading part of the continuous kneading extruding machine is executed with higher pressure than the other kneading part, and a polyolefin sheet is obtained by forming polyolefin melt-kneaded matter prepared by the manufacturing method into a sheet, wherein the polyolefin sheet has a bending elasticity of 5×105-1×107 Pa.

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