Patent · US Active

Calcium carbonate as cavitation agent for biaxially oriented polypropylene films

US11746196B2 · kind B2 · utility

0Cited by

15References

23Claims

0Family size

Assignee

OMYA INTERNATIONAL AG · CH

Inventors

Martin Brunner · Pforzheim, DE
Christoph Hirsiger · Koppigen, CH
Pierre Blanchard · Échirolles, FR
Christophe Roux · L'Essart Mador, FR

Key dates

Filing date	Jul 17, 2017
Grant date	Sep 5, 2023
Priority date	—
Expiry date	Nov 26, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2201/006
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to a mono or multi-layer biaxially oriented polypropylene film having a density of ≤0.72 g/cm3, a process for producing the mono or multi-layer biaxially oriented polypropylene film, the use of at least one natural calcium carbonate as cavitation agent in the mono or multi-layer biaxially oriented polypropylene film, an article comprising the mono or multi-layer biaxially oriented polypropylene film as well as the uses.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.