公开(公告)号：US20220033631A1

公开(公告)日：2022-02-03

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 ,  C08L23/14 ,  C08L23/20 ,  B29C55/16 ,  B29C48/00 ,  C08J5/18 ,  H01G4/18

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：US20170341267A1

公开(公告)日：2017-11-30

申请号：US15534447

申请日：2015-12-07

Applicant: BOREALIS AG

Inventor： Martina SANDHOLZER ,  Klaus BERNREITNER ,  Hermann BRAUN ,  Hermann PROKSCHI ,  Ulrich SCHREIDER ,  Frank SCHRODER ,  Thomas HAGER ,  Katja KLIMKE ,  Markus GAHLEITNER

IPC: B29B9/06 ,  B29C47/00 ,  C08L23/14 ,  B29B9/12 ,  C08K5/00 ,  C08L23/16 ,  B29B9/16

CPC classification number: B29B9/065 ,  B29B9/12 ,  B29B9/16 ,  B29B2009/165 ,  B29C48/04 ,  C08K5/0083 ,  C08L23/142 ,  C08L23/16 ,  C08L2205/24 ,  C08L2207/02

Abstract: The present invention provides a process for extruding and pelletising a propylene copolymer. The copolymer has a content of comonomer from 5 to 40% by mole, a melt flow rate MFR2 measured at 230° C. under a load of 2.16 kg of from 0.5 to 15 g/10 min and a content of cold xylene soluble material of from 20 to 60% by weight. The process comprises extruding the propylene copolymer through a die plate into an underwater pelletiser and cutting strands of the propylene copolymer into pellets in the underwater pelletiser, wherein the ratio of the mass flow rate of the propylene copolymer to the mass flow rate of the cooling water is from 0.020 to 0.060; and the propylene copolymer comprises a polymeric nucleating agent.

公开(公告)号：US20220356330A1

公开(公告)日：2022-11-10

申请号：US17635892

申请日：2020-08-04

Applicant: Borealis AG

Inventor： Susanne Margarete KAHLEN ,  Hermann BRAUN ,  Yi LIU ,  Meta CIGON ,  Philip KNAPEN

IPC: C08L23/12 ,  C08L23/06

Abstract: Disclosed is a polymer composition comprising at least the following components A) 20 to 75 wt.-% based on the overall weight of the polymer composition of a polymer blend, comprising a1) polypropylene; a2) polyethylene; wherein the weight ratio of a1) to a2) is from 3:7 to 12:1; and wherein the polymer blend A) is a recycled material; B) 25 to 80 wt.-% based on the overall weight of the polymer composition of a virgin polypropylene homopolymer. Also disclosed are a process for manufacturing the polymer composition, a process for improving mechanical properties of a polymer blend A) by incorporating B) into A) and articles made from the resulting polymer composition.

公开(公告)号：US20220306844A1

公开(公告)日：2022-09-29

申请号：US17635838

申请日：2020-08-04

Applicant: Borealis AG

Inventor： Susanne Margarete KAHLEN ,  Hermann BRAUN ,  Yi LIU ,  Meta CIGON ,  Philip KNAPEN

IPC: C08L23/06 ,  C08L23/12

Abstract: Disclosed is a polymer composition comprising at least the following components A) 20 to 75 wt.-% based on the overall weight of the polymer composition of a polymer blend, comprising a1) polypropylene; a2) polyethylene; wherein the weight ratio of a1) to a2) is from 3:7 to 12:1; and wherein the polymer blend A) is a recycled material; B) 25 to 80 wt.-% based on the overall weight of the polymer composition of a virgin random polypropylene copolymer wherein the weight proportions of components A) and B) add up to 100 wt.-%. Also disclosed are a process for manufacturing the polymer composition to the use of component B) for improving mechanical properties of polymer blends A) and to articles comprising the polymer composition.

公开(公告)号：US20220289955A1

公开(公告)日：2022-09-15

申请号：US17635764

申请日：2020-08-04

Applicant: Borealis AG

Inventor： Susanne Margarete KAHLEN ,  Hermann BRAUN ,  Yi LIU ,  Meta CIGON ,  Philip KNAPEN

IPC: C08L23/12 ,  C08L23/06

Abstract: Disclosed is a polymer composition comprising at least the following components A) 20 to 75 wt.-% based on the overall weight of the polymer composition of a polymer blend, comprising a1) polypropylene; a2) polyethylene; wherein the weight ratio of a1) to a2) is from 3:7 to 12:1; and wherein the polymer blend A) is a recycled material; B) 25 to 80 wt.-% based on the overall weight of the polymer composition of a virgin heterophasic polypropylene block copolymer; wherein that the weight proportions of A) and B) add up to 100 wt.-%. Also disclosed are a process for manufacturing the polymer composition and articles comprising the polymer composition.

公开(公告)号：US20180079875A1

公开(公告)日：2018-03-22

申请号：US15566588

申请日：2016-04-25

Applicant: Borealis AG

Inventor： Hermann BRAUN ,  Michael JERABEK ,  Thomas LUMMERSTORFER ,  Andreas HAIDER ,  Lukas SOBCZAK

IPC: C08J5/04 ,  C08L23/12

CPC classification number: C08J5/046 ,  C08J2323/12 ,  C08J2423/26 ,  C08J2429/04 ,  C08L23/12 ,  C08L23/142 ,  C08L2205/02 ,  C08L2205/03 ,  C08L2205/16 ,  C08L29/04 ,  C08L23/16

Abstract: Polyvinyl alcohol fiber reinforced polypropylene composition with excellent impact/stiffness balance as well as to its preparation and use.