Patent · US Expired

Modification of drawn film

US8079480B2 · kind B2 · utility

9Cited by

10References

46Claims

0Family size

Inventors

Thomas Häring · Stuttgart, DE
Rima Häring · Stuttgart, DE

Key dates

Filing date	May 13, 2002
Grant date	Dec 20, 2011
Priority date	—
Expiry date	Dec 6, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31504
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The Invention relates to a drawn polymer film, comprising (A) a polymer or polymer blend and at least (B) one additional component with an average particle diameter of between 0.1 and 15 μm, which by means of (C) one or several secondary treatment steps is processed to form a membrane after being drawn. The average particle diameter of component (B) ranges between 0.1 and 15 μm, preferably 0.5-8.0 μm, with the range between 1.0 and 7.0 μm being particularly preferred. The membranes are used for alkene-alkane separation, electrodialysis, the desalinisation of seawater, in fuel cell applications and other membrane applications.

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