Polypropylenfolienstruktur mit Erhöhter Lebensdauer

Details

Veröffentlichungs-Nr.

EP3315543

Aktenzeichen

EP16196111

Anmeldetag

27. Oktober 2016

Veröffentlichung

23. September 2020

Erteilung

23. September 2020

Rechtsraum

EP

IPC

C08J5/18H01B3/22H01B3/44H01G4/18H01G4/22// B32B27/32B29C55/12

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.

Anmelder

Firma

Borealis AG

Land

🇦🇹 Österreich

Fachgebiete