Process for the high-speed rotary application of liquid coating agents

US6733842B1 · kind B1 · utility

Assignee

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

Inventors

• Michael Becker · East Lansing, US
• Dirk Holfter · Hagen, DE
• Karl-Friedrich Doessel · Wiesbaden, DE

Key dates

• Filing date: May 1, 2003
• Grant date: May 11, 2004
• Expiry date: May 1, 2023

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05D2202/00
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A process for the high-speed rotary application of a liquid coating agent onto a substrate, wherein the process comprises the steps:(a) direct supply of at least two liquid components in a specified quantity ratio which determines the qualitative and quantitative composition of the coating agent to at least one high-speed rotary atomizer or preparation of a premix from at least two liquid components in a specified quantity ratio which determines the qualitative and quantitative composition of the coating agent and supply of the premix to at least one high-speed rotary atomizer,(b) high-speed rotary atomization of the components directly supplied in step (a) or of the premix supplied in step (a) to the at least one high-speed rotary atomizer and(c) application of the material atomized in step (b) onto a substrate,wherein at least one of the components used in step (a) differs from at least one further component used in step (a) with regard to density by 0.05 to 2 g/cm3 and/or with regard to flow time (DIN EN ISO 2431, DIN 4 cup, 20° C.) by 15 to 150 seconds.