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公开(公告)号：CA2518414A1
公开(公告)日：2004-09-16
申请号：CA2518414
申请日：2004-03-05
Applicant: TORAY INDUSTRIES
Inventor： ITO NOBUAKI , IZUHARA DAISUKE , NAKAMURA MASATAKA , ADACHI SHINYA
IPC: C08G79/04 , C08G65/40 , C08G75/02 , C08G75/20 , C09K5/20 , H01B1/06 , H01B1/12 , H01M4/86 , H01M4/88 , H01M4/92 , H01M8/02 , H01M8/04 , H01M8/04186 , H01M8/06 , H01M8/10 , H01M8/1004 , H01M8/1009 , H01M8/1027 , H01M8/1034 , H01M8/1067 , H01M8/1088
Abstract: A polymer electrolyte material excelling in not only proton conductivity but also fuel cutoff properties; and a polymer electrolyte type fuel cell of hig h efficiency. In particular, a polymer electrolyte material wherein in a hydro us state the fraction of antifreeze water (Rw1) represented by the following formula (S1) is in the range of 20 to 100 wt.%. Rw1 = [Wnf/(Wfc + Wnf)] x 10 0 (S1) wherein Wnf: amount of antifreeze water per g of dry weight of polymer electrolyte material, and Wfc: amount of low-melting-point water per g of dr y weight of polymer electrolyte material.
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公开(公告)号：DE69520815D1
公开(公告)日：2001-06-07
申请号：DE69520815
申请日：1995-09-14
Applicant: TORAY INDUSTRIES
Inventor： ITO NOBUAKI , TSUKUDA AKIMITSU , YONEYAMA KAZUMASA
Abstract: A magnetic recording medium comprises a base film consisting essentially of an aromatic polyamide and a magnetic layer formed on at least one surface of the base film, wherein the base film has a tensile Young's modulus in at least one direction of not less than 700 kg/mm , a content of materials which are extractable with methylene chloride of not more than 0.5% and a dimensional change in the longitudinal direction after applying a load of 1 kg per 1 mm at 100 DEG C for 10 minutes of not more than 2%.
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公开(公告)号：CA2256433A1
公开(公告)日：1998-10-01
申请号：CA2256433
申请日：1998-03-19
Applicant: TORAY INDUSTRIES
Inventor： YONEYAMA KAZUMASA , ITO NOBUAKI
Abstract: An aromatic polyamide film which has a thermal shrinkage in the transverse direction of 0.2 to 8 % as measured at 220 ~C under a load of 80 kg/cm2 and has a ten-point average surface roughness, Rz, of 10 to 200 nm on its side opposite to the side where a magnetic layer is to be formed; and a magnetic recording medium comprising this film and a magnetic layer formed on one side thereof. Using the film having a high-temperature thermal shrinkage and a surface property respectively within the above ranges can provide a magnetic recording medium which is reduced in curling and has excellent surface flatness.
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公开(公告)号：DE60133150T2
公开(公告)日：2008-06-12
申请号：DE60133150
申请日：2001-01-05
Applicant: TORAY INDUSTRIES
Inventor： SUEOKA MASANORI , TSUKUDA AKIMITSU , ITO NOBUAKI
Abstract: Disclosed is a magnetic recording medium having a magnetic layer directly formed on at least one surface of a base film that comprises, as the essential ingredient, an aromatic polyamide, in which the number of protrusions having a height of at least 10 nm on the surface of the magnetic layer, Na(10) (/mm ), the number of protrusions having a height of at least 50 nm thereon, Na(50) (/mm ), and the number of protrusions having a height of at least 10 nm on the surface of the base film coated with the magnetic layer, Na(10)' (/mm ), all satisfy the following formulae: 2 x 10 ≤ Na(10) ≤ 2 x 10 , 0 ≤ Na(50) ≤ 5 x 10 , -0.9 ≤ (Na(10) - Na(10)')/Na(10)' ≤ 0. The medium has, as the non-magnetic substrate (base film), a highly-tough, aromatic polyamide film, and the surface profile of its magnetic layer and that of its base film are specifically controlled. Therefore, its overall thickness can be reduced without lowering its recording capacity. Such high-capacity, thin tapes of the medium have good running durability, and the reliability for data recording and reading thereon is high. The medium is favorable to computer data recording thereon.
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公开(公告)号：DE69824261D1
公开(公告)日：2004-07-08
申请号：DE69824261
申请日：1998-03-19
Applicant: TORAY INDUSTRIES
Inventor： ITO NOBUAKI , YONEYAMA KAZUMASA
Abstract: The present invention provides an aromatic polyamide film wherein a heat-shrinkage in the TD direction at 220 DEG C is of 0.2 to 8% under a load of 80 kg/cm , and wherein an average ten-point roughness Rz of the surface that is opposite to a surface for providing a magnetic layer is 10 to 200 nm; and a magnetic recording medium, wherein a magnetic layer is provided on a surface of the film. Since the heat-shrinkage at a high temperature and the properties of the surface of the film are within the confines of the present invention, there is obtained a magnetic recording medium having a high degree of flatness with small curls, and a high recording density by using the film.
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Patent Agency Ranking
公开(公告)号：DE69530463T2
公开(公告)日：2004-02-12
申请号：DE69530463
申请日：1995-06-21
Applicant: TORAY INDUSTRIES
Inventor： TSUKUDA AKIMITSU , YONEYAMA KAZUMASA , ITO NOBUAKI
Abstract: A magnetic recording medium comprising a magnetic layer provided on one side of a base film made from an aromatic polyamide or polyimide, wherein the number (H2) of coarse surface protrusions on the magnetic layer side and the number (H3) of coarse surface protrusions on the nonmagnetic layer side satisfy the following conditions: H2 /= 800 kg/mm , 0.5
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公开(公告)号：CA2518414C
公开(公告)日：2013-01-08
申请号：CA2518414
申请日：2004-03-05
Applicant: TORAY INDUSTRIES
Inventor： ADACHI SHINYA , IZUHARA DAISUKE , NAKAMURA MASATAKA , ITO NOBUAKI
IPC: C08G79/04 , H01M8/02 , C08G65/40 , C08G75/02 , C08G75/20 , C09K5/20 , H01B1/06 , H01B1/12 , H01M4/86 , H01M4/88 , H01M4/92 , H01M8/04 , H01M8/04186 , H01M8/06 , H01M8/10 , H01M8/1004 , H01M8/1009 , H01M8/1027 , H01M8/1034 , H01M8/1067 , H01M8/1088
Abstract: The invention aims to provide a polymer electrolytic material excellent in proton conductivity and also excellent in fuel shutting property, and accordingly provide a polymer electrolytic fuel cell with a high efficiency. That is, the invention provides a polymer electrolytic material having an unfreezable water ratio Rw1 defined by the following expression (S1) in a range of 20 to 100% by weight in hydrated state: Rw1 = [Wnf/(Wfc + Wnf)] x 100 ...... (S1) in which Wnf represents the unfreezable water content per 1 g of the polymer electrolytic material in dry state and Wfc represents the low freezing point water content per 1 g of the polymer electrolytic material in dry state.
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公开(公告)号：DE69824261T2
公开(公告)日：2004-09-23
申请号：DE69824261
申请日：1998-03-19
Applicant: TORAY INDUSTRIES
Inventor： ITO NOBUAKI , YONEYAMA KAZUMASA
Abstract: The present invention provides an aromatic polyamide film wherein a heat-shrinkage in the TD direction at 220 DEG C is of 0.2 to 8% under a load of 80 kg/cm , and wherein an average ten-point roughness Rz of the surface that is opposite to a surface for providing a magnetic layer is 10 to 200 nm; and a magnetic recording medium, wherein a magnetic layer is provided on a surface of the film. Since the heat-shrinkage at a high temperature and the properties of the surface of the film are within the confines of the present invention, there is obtained a magnetic recording medium having a high degree of flatness with small curls, and a high recording density by using the film.
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公开(公告)号：DE69530463D1
公开(公告)日：2003-05-28
申请号：DE69530463
申请日：1995-06-21
Applicant: TORAY INDUSTRIES
Inventor： TSUKUDA AKIMITSU , YONEYAMA KAZUMASA , ITO NOBUAKI
Abstract: A magnetic recording medium comprising a magnetic layer provided on one side of a base film made from an aromatic polyamide or polyimide, wherein the number (H2) of coarse surface protrusions on the magnetic layer side and the number (H3) of coarse surface protrusions on the nonmagnetic layer side satisfy the following conditions: H2 /= 800 kg/mm , 0.5
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公开(公告)号：DE60133150D1
公开(公告)日：2008-04-24
申请号：DE60133150
申请日：2001-01-05
Applicant: TORAY INDUSTRIES
Inventor： SUEOKA MASANORI , TSUKUDA AKIMITSU , ITO NOBUAKI
Abstract: Disclosed is a magnetic recording medium having a magnetic layer directly formed on at least one surface of a base film that comprises, as the essential ingredient, an aromatic polyamide, in which the number of protrusions having a height of at least 10 nm on the surface of the magnetic layer, Na(10) (/mm ), the number of protrusions having a height of at least 50 nm thereon, Na(50) (/mm ), and the number of protrusions having a height of at least 10 nm on the surface of the base film coated with the magnetic layer, Na(10)' (/mm ), all satisfy the following formulae: 2 x 10 ≤ Na(10) ≤ 2 x 10 , 0 ≤ Na(50) ≤ 5 x 10 , -0.9 ≤ (Na(10) - Na(10)')/Na(10)' ≤ 0. The medium has, as the non-magnetic substrate (base film), a highly-tough, aromatic polyamide film, and the surface profile of its magnetic layer and that of its base film are specifically controlled. Therefore, its overall thickness can be reduced without lowering its recording capacity. Such high-capacity, thin tapes of the medium have good running durability, and the reliability for data recording and reading thereon is high. The medium is favorable to computer data recording thereon.
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