Preparing radiation-curable, urethane-functional prepolymers

US6177535A · kind A · utility

Assignee

• BASF SE

Inventors

• Reinhold Schwalm · Monsheim, DE
• Rainer Koniger · Freinsheim, DE
• Wolfgang Paulus · Lam, DE
• Wolfgang Reich · Frankenthal (Pfalz), DE
• Erich Beck · Ladenburg, DE
• Matthias Lokai · Enkenbach-Alsenborn, DE
• Klaus Menzel · Berlin, DE

Key dates

• Filing date: Sep 21, 1998
• Grant date: Jan 23, 2001
• Expiry date: Sep 21, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D175/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for preparing radiation-curable, urethane-functional prepolymers by reacting an isocyanate-functional component A with an OH-containing component B, wherein either component A embraces two different isocyanate compounds A1 or one isocyanate compound A1 and at least one isocyanate compound A2 or component B embraces at least two different compounds B1. Also, the prepolymers obtainable by the process and the radiation-curable formulations comprising them. Furthermore, the use of the radiation-curable formulations for coating substrates, a method of coating substrates, and the coated substrates themselves.