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公开(公告)号：US11851552B2
公开(公告)日：2023-12-26
申请号：US17413612
申请日：2019-12-20
Applicant: BOREALIS AG
Inventor： Dietrich Gloger , Hermann Braun , Antonios Gitsas , Davide Tranchida , Franciscus Jacobs , Wolfram Stadlbauer
IPC: C08L23/12 , B29C48/00 , B29C55/16 , C08J5/18 , C08L23/14 , C08L23/20 , H01G4/18 , B29K23/00 , B29L9/00
CPC classification number: C08L23/12 , B29C48/022 , B29C55/16 , C08J5/18 , C08L23/142 , C08L23/20 , H01G4/18 , B29K2023/12 , B29K2023/14 , B29K2023/18 , B29L2009/003 , C08L2203/16 , C08L2205/025 , C08L2205/03
Abstract: The present invention is directed to a biaxially oriented polypropylene (BOPP) film with improved breakdown strength and to a capacitor comprising an insulation film comprising a layer of the biaxially oriented polypropylene film of the present invention. The present invention is further directed to a process for producing a biaxially oriented polypropylene film. Finally, the present invention is further directed to the use of a biaxially oriented polypropylene film of the present invention as layer of an insulation film of a capacitor. The BOPP film comprises a polypropylene composition, wherein the polypropylene composition comprises a high isotactic homopolymer of propylene and a polymeric α-nucleating agent. The BOPP film has a dielectric breakdown field strength Eb63.2 of at least 595 kV/mm. The process for producing a biaxially oriented polypropylene film comprises the steps of extruding a polypropylene composition to a flat film and orienting the flat film simultaneously in the machine direction and in the transverse direction.
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公开(公告)号：US10886070B2
公开(公告)日：2021-01-05
申请号：US15568291
申请日：2016-04-26
Applicant: BOREALIS AG
Inventor： Franciscus Jacobs , Guido Boelaers
Abstract: The present invention is a structure comprising a biaxially oriented film having a layer comprising a homopolymer of propylene which layer is in contact with oil, characterised in that the homopolymer of propylene has a content of isotactic pentads of from 95% to 98% and a content of ash of not more than 30 ppm.
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公开(公告)号：US20180108484A1
公开(公告)日：2018-04-19
申请号：US15568291
申请日：2016-04-26
Applicant: BOREALIS AG
Inventor： Franciscus Jacobs , Guido Boelaers
CPC classification number: H01G4/32 , B29K2023/14 , C08J5/18 , C08J2323/12 , H01B3/22 , H01B3/441 , H01G4/18 , H01G4/22
Abstract: The present invention is a structure comprising a biaxially oriented film having a layer comprising a homopolymer of propylene which layer is in contact with oil, characterised in that the homopolymer of propylene has a content of isotactic pentads of from 95% to 98% and a content of ash of not more than 30 ppm.
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公开(公告)号：US20170240733A1
公开(公告)日：2017-08-24
申请号：US15509177
申请日：2015-09-09
Applicant: BOREALIS AG
Inventor： Antonis Gitsas , Dietrich Gloger , Franciscus Jacobs , Hermann Braun , Johannes Wolfschwenger
CPC classification number: C08L23/12 , C08J5/18 , C08J2323/12 , C08J2423/12 , C08K5/0083 , C08L23/10 , C08L2203/16 , C08L2203/20 , C08L2203/206 , C08L2205/025 , C08L2207/07 , C08L2207/10 , H01G4/18 , H01G4/33
Abstract: The present invention relates to a newpolypropylene composition with improved processability and heat resistance for use in a capacitor film, as well as a cast film and a biaxially oriented film for the use as capacitor film comprising such polypropylene composition.
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公开(公告)号：US09637602B2
公开(公告)日：2017-05-02
申请号：US15101837
申请日：2014-12-18
Applicant: BOREALIS AG
Inventor： Gregory Potter , Dietrich Gloger , Thomas Horill , Antonis Gitsas , Franciscus Jacobs , Matthew Parkinson
CPC classification number: C08J5/18 , B29C55/10 , B29C55/12 , B29K2023/14 , B29L2007/008 , C08F210/16 , C08J2323/12 , C08J2323/14 , C08F110/06 , C08F4/6543 , C08F210/06 , C08F2/001 , C08F210/02 , C08F2500/12 , C08F2500/26
Abstract: The present invention relates to a new biaxially oriented polypropylene (BOPP) film, a process for the preparation of such film as well as the use of a polypropylene for the preparation of such film and an article comprising such film.
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Patent Agency Ranking
公开(公告)号：US20160222189A1
公开(公告)日：2016-08-04
申请号：US15096030
申请日：2016-04-11
Applicant: Borealis AG
Inventor： Franciscus Jacobs
IPC: C08K5/098 , H01G2/00 , B32B15/085
CPC classification number: C08K5/098 , B32B15/085 , B32B2250/02 , B32B2457/16 , C08J5/18 , H01G2/00 , H01G4/18 , H01G4/33 , Y10T428/31692 , C08L23/10
Abstract: Capacitor film comprising a biaxially oriented polypropylene (BOPP) and more than 100 to below or equal 400 ppm of an alkali earth fatty acid salt.
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公开(公告)号：US11591444B2
公开(公告)日：2023-02-28
申请号：US16340219
申请日：2017-10-24
Applicant: Borealis AG
Inventor： Franciscus Jacobs , Guido Boelaers , Dietrich Gloger , Helmut Rinnerthaler
IPC: C08J5/18 , B32B15/085 , B32B15/20 , H01G4/04 , H01G4/18 , H01G4/32 , H01B3/22 , H01B3/44 , B32B37/20
Abstract: The present invention refers to a structure comprising a biaxially oriented polypropylene (BOPP) film having at least one layer comprising a homopolymer of propylene which layer is in contact with an oil phase, the homopolymer of propylene has a) a content of isotactic pentads in the range from 95% to 98%, and b) a content of ash of not more than 30 ppm, based on the total weight of the homopolymer of propylene, characterized in that the oil phase has an absorbance value of ≤0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity. The present invention further refers to the use of a biaxially oriented polypropylene (BOPP) film for making capacitors comprising said structure, wherein the oil phase has an absorbance value of ≤0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity as well as the use of the homopolymer of propylene for increasing the life time of a capacitor.
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公开(公告)号：US11021597B2
公开(公告)日：2021-06-01
申请号：US15766399
申请日：2016-10-14
Applicant: BOREALIS AG
Inventor： Antonios Gitsas , Dietrich Gloger , Hermann Braun , Franciscus Jacobs , Davide Tranchida , Wolfram Stadlbauer
Abstract: The present invention is biaxially oriented film comprising a layer comprising a propylene polymer composition comprising a high isotactic homopolymer of propylene and a polymeric α-nucleating agent. The composition may also comprise other propylene polymers.
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公开(公告)号：US20200040150A1
公开(公告)日：2020-02-06
申请号：US16340219
申请日：2017-10-24
Applicant: Borealis AG
Inventor： Franciscus Jacobs , Guido Boelaers , Dietrich Gloger , Helmut Rinnerthaler
Abstract: The present invention refers to a structure comprising a biaxially oriented polypropylene (BOPP) film having at least one layer comprising a homopolymer of propylene which layer is in contact with an oil phase, the homopolymer of propylene has a) a content of isotactic pentads in the range from 95% to 98%, and b) a content of ash of not more than 30 ppm, based on the total weight of the homopolymer of propylene, characterized in that the oil phase has an absorbance value of ≤0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity. The present invention further refers to the use of a biaxially oriented polypropylene (BOPP) film for making capacitors comprising said structure, wherein the oil phase has an absorbance value of ≤0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity as well as the use of the homopolymer of propylene for increasing the life time of a capacitor.
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公开(公告)号：US20180298172A1
公开(公告)日：2018-10-18
申请号：US15766399
申请日：2016-10-14
Applicant: BOREALIS AG
Inventor： Antonios Gitsas , Dietrich Gloger , Hermann Braun , Franciscus Jacobs , Davide Tranchida , Wolfram Stadlbauer
Abstract: The present invention is biaxially oriented film comprising a layer comprising a propylene polymer composition comprising a high isotactic homopolymer of propylene and a polymeric α-nucleating agent. The composition may also comprise other propylene polymers.
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