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公开(公告)号：DE3877970D1
公开(公告)日：1993-03-11
申请号：DE3877970
申请日：1988-09-21
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , OGAWA KATSUYA , NISHIURA EIICHI , OKUMURA YOSHIHARU , II YOSHIKAZU
Abstract: Packaging material has on its front and back surfaces surface portions having charges that are polarised mutually differently. @(30pp Dwg.No.5/6)@
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公开(公告)号：DE3877970T2
公开(公告)日：1993-05-13
申请号：DE3877970
申请日：1988-09-21
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , OGAWA KATSUYA , NISHIURA EIICHI , OKUMURA YOSHIHARU , II YOSHIKAZU
Abstract: Packaging material has on its front and back surfaces surface portions having charges that are polarised mutually differently. @(30pp Dwg.No.5/6)@.
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公开(公告)号：AU2520488A
公开(公告)日：1990-04-18
申请号：AU2520488
申请日：1988-09-21
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , OGAWA KATSUYA , OKUMURA YOSHIHARU , YOSHIKAZU II , NISHIURA EIICHI
Abstract: Packaging material has on its front and back surfaces surface portions having charges that are polarised mutually differently. @(30pp Dwg.No.5/6)@.
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公开(公告)号：AT85021T
公开(公告)日：1993-02-15
申请号：AT88908346
申请日：1988-09-21
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , OGAWA KATSUYA , NISHIURA EIICHI , OKUMURA YOSHIHARU , II YOSHIKAZU
Abstract: Packaging material has on its front and back surfaces surface portions having charges that are polarised mutually differently. @(30pp Dwg.No.5/6)@.
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公开(公告)号：BR8807808A
公开(公告)日：1990-11-27
申请号：BR8807808
申请日：1988-09-21
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , OGAWA KATSUYA , NISHIURA EIICHI , OKUMURA YOSHIHARU , YOSHIKAZU II
Abstract: Packaging material has on its front and back surfaces surface portions having charges that are polarised mutually differently. @(30pp Dwg.No.5/6)@.
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Patent Agency Ranking
公开(公告)号：DE3887337T2
公开(公告)日：1994-06-30
申请号：DE3887337
申请日：1988-11-11
Applicant: TORAY INDUSTRIES
Inventor： NISHIURA EIICHI , ANDO KATSUTOSHI
IPC: D06M10/00 , D06M101/00 , D06M101/16 , D06M101/18 , D06M101/20 , D06M101/22 , H01G7/02
Abstract: This invention relates to an electret material having thermal stability and capable of having high trapped charge quantity and stably existing for a long period of time and a process for preparing said electret material. The electret material of the present invention is characterized in that it comprises 100 parts by weight of polypropylene, 0.01 to 2 parts by weight of at least one stabilizer selected from among hindered amine, nitrogen-containing hindered phenol, and metal-containing hindered phenol stabilizers and that at least part of said propylene has such a molecular weight distribution that the Mw/Mn ratio wherein Mw is a weight-average molecular weight is 5.5 or less. The electret material of the present invention can be widely used for various applications and, e.g., is best suited for use in, e.g., various filter materials, wiper materials, adsorption materials, masking materials, and dust-proof materials.
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公开(公告)号：AU621568B2
公开(公告)日：1992-03-19
申请号：AU2520488
申请日：1988-09-21
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , OGAWA KATSUYA , OKUMURA YOSHIHARU , YOSHIKAZU II , NISHIURA EIICHI
Abstract: Packaging material has on its front and back surfaces surface portions having charges that are polarised mutually differently. @(30pp Dwg.No.5/6)@.
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公开(公告)号：DE3887337D1
公开(公告)日：1994-03-03
申请号：DE3887337
申请日：1988-11-11
Applicant: TORAY INDUSTRIES
Inventor： NISHIURA EIICHI , ANDO KATSUTOSHI
IPC: D06M10/00 , D06M101/00 , D06M101/16 , D06M101/18 , D06M101/20 , D06M101/22 , H01G7/02
Abstract: This invention relates to an electret material having thermal stability and capable of having high trapped charge quantity and stably existing for a long period of time and a process for preparing said electret material. The electret material of the present invention is characterized in that it comprises 100 parts by weight of polypropylene, 0.01 to 2 parts by weight of at least one stabilizer selected from among hindered amine, nitrogen-containing hindered phenol, and metal-containing hindered phenol stabilizers and that at least part of said propylene has such a molecular weight distribution that the Mw/Mn ratio wherein Mw is a weight-average molecular weight is 5.5 or less. The electret material of the present invention can be widely used for various applications and, e.g., is best suited for use in, e.g., various filter materials, wiper materials, adsorption materials, masking materials, and dust-proof materials.
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公开(公告)号：AT100628T
公开(公告)日：1994-02-15
申请号：AT88909835
申请日：1988-11-11
Applicant: TORAY INDUSTRIES
Inventor： NISHIURA EIICHI , ANDO KATSUTOSHI
IPC: H01G7/02
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公开(公告)号：DE3168597D1
公开(公告)日：1985-03-14
申请号：DE3168597
申请日：1981-05-27
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , NISHIURA EIICHI
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