Coating of porous, hydrophobic substrates with thermoplastic fluoropolymers

US6149978A · kind A · utility

Assignee

• Dyneon GmbH · DE

Inventors

• Hermann Bladel · Emmerting, DE
• Ludwig Mayer · San Jose, US
• Manfred Schmid · Neutraubling, DE

Key dates

• Filing date: Feb 22, 1994
• Grant date: Nov 21, 2000
• Expiry date: Feb 22, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D127/18
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

If hydrophobic substrates are coated--if appropriate under pressure--with an aqueous dispersion of a thermoplastic fluoropolymer having a number-average particle size of up to 100 nm and the fluoropolymer is fixed on the substrate thus impregnated by heat treatment, firmly adhering coatings are obtained.