Patent · US Expired

Polyester film with hydrophilic coating, process for its production and its use

US7384684B2 · kind B2 · utility

3Cited by

26References

25Claims

0Family size

Assignee

Mitsubishi Polyester Film GmbH · US

Inventors

Matthias Konrad · Kriftel, DE
Dagmar Klein · Ockenheim, DE
Herbert Peiffer · Mainz, DE
Gottfried Hilkert · Saulheim, DE

Key dates

Filing date	Oct 4, 2005
Grant date	Jun 10, 2008
Priority date	—
Expiry date	Apr 26, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31935
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to an aqueous coating composition which comprises a mixture of polyvinylpyrrolidone, a surfactant and optionally an adhesion-promoting polymer. This mixture is suitable for inline coating of biaxially oriented polyester films. The thus obtained films feature a characteristic hydrophilic surface which prevents the fogging of the films with water droplets.

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