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11. 发明专利

JP2000063551A POROUS FILM AND SEPARATOR FOR BATTERY 失效
公开(公告)号：JP2000063551A
公开(公告)日：2000-02-29
申请号：JP24068598
申请日：1998-08-26
申请人： UBE INDUSTRIES
发明人： KIUCHI MASAYUKI , NAKAKITA TOMOJI , KAWABATA KENJI
IPC分类号： C08J9/00 , C08L23/10 , H01M2/16
摘要： PROBLEM TO BE SOLVED: To obtain a polyolefin-based porous film hardly causing a short-circuit when assembling or using a battery obtained by using the film as a separator for the battery such as a lithium battery, and excellent in mechanical strength by allowing the film to include a specific polypropylene. SOLUTION: This polyolefin-based porous film contains a polypropylene having >=60,000, preferably >=70,000 number average molecular weight Mn, >=7 ratio Mw/Mn of the weight average molecular weight Mw to the number average molecular weight Mn, and preferably >=93% pentad fraction. The porous film is preferably a single layered or laminated porous film formed into the porous one by an orientation method. For example, a melt extruded polypropylene film is heat-treated and oriented at a temp. of 70-140 deg.C in 100-400% magnification to make the film porous. For example, in a case of a polypropylene film laminated with a polyethylene film, the laminated film is preferably subjected to a low temperature orientation, and the oriented film is further subjected to a high temperature orientation.

12. 发明专利

JP2002025531A SEPARATOR FOR BATTERY AND LITHIUM SECONDARY BATTERY USING IT 失效
公开(公告)号：JP2002025531A
公开(公告)日：2002-01-25
申请号：JP2000206731
申请日：2000-07-07
申请人： UBE INDUSTRIES
发明人： KIUCHI MASAYUKI , AKAZAWA TETSUO , NAKAKITA TOMOJI , KAWABATA KENJI
IPC分类号： H01M2/16 , H01M10/05 , H01M10/052 , H01M10/0525 , H01M10/0566 , H01M10/40
摘要： PROBLEM TO BE SOLVED: To provide a separator for a lithium secondary battery wherein battery characteristics such as a cycle property and a low-temperature property or the like, and provide a lithium secondary battery using it. SOLUTION: This is a separator for the battery, composed of a porous film having numerous penetrating minute holes, wherein the porous film contains basic inorganic fine particles which have average particle size of 0.1 to 8 μm and which have at least one kind of metal oxide selected from a group consisting of silica, alumina, magnesium oxide and zinc oxide as the main component, and this is the lithium secondary battery which uses the separator.

13. 发明专利

JP2000306568A POROUS FILM AND BATTERY SEPARATOR USED THEREWITH 失效
公开(公告)号：JP2000306568A
公开(公告)日：2000-11-02
申请号：JP11617899
申请日：1999-04-23
申请人： UBE INDUSTRIES
发明人： KIUCHI MASAYUKI , KAWABATA KENJI , YAO SHIGERU , OYA NOBUO
IPC分类号： H01G9/02 , B29C41/24 , H01M2/16
摘要： PROBLEM TO BE SOLVED: To provide a porous film for a battery separator of easy battery assembly excellent in heat resistance and safety. SOLUTION: This polyimide porous film having a plurality of fine through holes has a void content of 30-85%, an average hole diameter of 0.01-5 μm, the maximum hole diameter of 10 μm or under, a film thickness of 5-100 μm, an air permeability of 30 sec./100 cc to 2000 sec./100 cc, a heat resistant temperature of 200 deg.C or more and a heat shrinkage of ±1% or under when heated at 105 deg.C for 8 hours.

14. 发明专利

JP2000011986A BATTERY SEPARATOR AND MANUFACTURE THEREOF 失效
公开(公告)号：JP2000011986A
公开(公告)日：2000-01-14
申请号：JP17568198
申请日：1998-06-23
申请人： UBE INDUSTRIES
发明人： KIUCHI MASAYUKI , NAKAKITA TOMOJI , KAWABATA KENJI
IPC分类号： H01M2/16 , H01M2/18
摘要： PROBLEM TO BE SOLVED: To improve the mechanical strength of both end parts coming into contact with the plate side end face at winding of a battery by interposing a single-layer or a multilayer porous film having a number of micropores between a negative plate and a positive plate, and making nonporous the vicinity of both end parts in the cross direction of a spirally wound battery separator like a belt. SOLUTION: A microporous film uses a single layer or a multilayer film of polyolefin. Preferably, the vicinity of both end parts in the cross direction of a porous film is made nonporous by thermo compression bonding or by disposing a nonporous material. The region of the microporous film to be subjected to nonporous processing is preferably an outer area with a border recessed from the plate end face by a length 1-3% of the width of the belt-like plate. As a method of disposing a nonporous material, a method of sticking a nonporous film to a microporous film to perform hot compression bonding, and a method of impregnating a microporous film with thermoplastic material and solidifying the same in the micropores to be blocked can be cited. A nonporous film to be stuck is preferably, such that the thickness is equal to the thickness of the whole after hot compression bonding.

15. 发明专利

JPH0812827A POLYPROPYLENE COMPOSITION 失效
公开(公告)号：JPH0812827A
公开(公告)日：1996-01-16
申请号：JP14669294
申请日：1994-06-28
申请人： UBE INDUSTRIES
发明人： KAWABATA KENJI , FUKUNAGA KENJI , KAMEI EIICHI
IPC分类号： C08L23/12 , C08L23/16
摘要： PURPOSE:To obtain a polypropylene composition good in balance among rigidity, heat distortion resistance and impact resistance (esp. at low temperatures), and useful for large-sized molded products such as bumpers. CONSTITUTION:This composition comprises 50-99wt.% of crystalline polypropylene and 50-1wt.% of an amorphous ethylene-propylene copolymer. In this composition, the amorphous ethylene-propylene copolymer stands as disperse phase in the crystalline polypropylene matrix and the interwall distance for the disperse phase is

16. 发明专利

JPH0812826A POLYPROPYLENE COMPOSITION AND ITS PRODUCTION 失效
公开(公告)号：JPH0812826A
公开(公告)日：1996-01-16
申请号：JP14669194
申请日：1994-06-28
申请人： UBE INDUSTRIES
发明人： KAWABATA KENJI , KAMEI EIICHI , IGAI SHIGERU , TAMURA MASANORI , IKEUCHI HIROMICHI
IPC分类号： C08L23/12 , C08L23/16
摘要： PURPOSE:To obtain a polypropylene composition good in balance among rigidity, heat distortion resistance and impact resistance (esp. at low temperatures), useful for large-sized molded products such as bumpers. CONSTITUTION:This polypropylene composition comprises 50-99wt.% of crystalline polypropylene and 50-1wt.% of an amorphous ethylenepropylene copolymer. For the amorphous ethylene-propylene copolymer, it is characteristic that the R-value expressed by the formula: R=4[EE] [PP]/[PE] ([EE] is the molar fraction of ethylene-ethylene chain; [PP] is the molar fraction of propylene- propylene chain; [PE] is the molar fraction of propylene-ethylene chain) is

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