(Meth)acrylic esters containing urethane groups, their preparation, radiation-curable coating compositions and a process for preparing these coating compositions

US6319983A · kind A · utility

Assignee

• BASF SE

Inventors

• Matthias Lokai · Enkenbach-Alsenborn, DE
• Erich Beck · Ladenburg, DE
• Wolfgang Reich · Frankenthal (Pfalz), DE
• Peter Enenkel · Konstanz, DE
• Herbert Marky · Kaiserslautern, DE
• Rainer Koniger · Freinsheim, DE

Key dates

• Filing date: Mar 30, 2000
• Grant date: Nov 20, 2001
• Expiry date: Mar 30, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D175/16
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing nondispersing (meth)acrylic esters containing urethane groups, comprising PA1 a) reacting at least one hydroxyl-containing compound with (meth)acrylic acid in a solvent, to form an ester; PA1 b) removing the solvent and optionally a part of unreacted (meth) acrylic acid; PA1 c) reacting the mixture resulting from stage a) or b) with at least one epoxy-functional compound in an amount corresponding to the acid number of the mixture; and PA1 d) reacting the mixture resulting from stage c) with at least one compound containing isocyanate groups, and such esters obtainable in this way, and radiation-curable coating compositions comprising said esters, and a process for preparing these coating compositions.