Process for coating substrates

US6432490B1 · kind B1 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Volker Rekowski · Bochum, DE
• Oliver Reis · Witten, DE
• Martin Wulf · Langenfeld, DE

Key dates

• Filing date: Feb 12, 2001
• Grant date: Aug 13, 2002
• Expiry date: Feb 12, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D175/16
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The process of this invention applies at least one coating composition to an optionally precoated substrate and then cures the thus obtained coating layer(s), whereby at least one of the coating layers is prepared from a coating composition that can be chemically cross-linked solely by radical polymerization of olefinic double bonds, the resin solid of the composition has a C═C equivalent weight from 100 to 10,000, preferably from 100 to 5,000, and the curing of the coating layer(s) is carried out with NIR radiation in the wave length range from 760-1500 nm.