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.

公开(公告)号：US10526478B2

公开(公告)日：2020-01-07

申请号：US15576757

申请日：2016-05-13

Applicant: BOREALIS AG

Inventor： Hermann Braun ,  Luca Boragno ,  Klaus Bernreitner ,  Sanna Martin ,  Tiina Suikkanen ,  Wolfram Stadlbauer

IPC: C08L23/14

Abstract: A propylene copolymer composition which comprises —a random copolymer of propylene (A), —a random copolymer of propylene (B), and —optional additive(s), suitable for pressure pipe applications.

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

IPC: B32B27/32 ,  C08L23/12 ,  C08J5/18 ,  H01G4/18

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.

公开(公告)号：US20180298179A1

公开(公告)日：2018-10-18

申请号：US15576757

申请日：2016-05-13

Applicant: BOREALIS AG

Inventor： Hermann Braun ,  Luca Boragno ,  Klaus Bernreitner ,  Sanna Martin ,  Tiina Suikkanen ,  Wolfram Stadlbauer

IPC: C08L23/14

CPC classification number: C08L23/14 ,  C08L23/142 ,  C08L2203/18 ,  C08L2205/025 ,  C08L2205/242

Abstract: A propylene copolymer composition which comprises —a random copolymer of propylene (A), —a random copolymer of propylene (B), and —optional additive(s), suitable for pressure pipe applications.

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

IPC: C08L23/12 ,  C08J5/18 ,  H01G4/18

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.