Copolymerizable photoinitiators for UV-crosslinkable adhesives

US7304119B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Wolf-Dieter Balzer · Ludwigshafen, DE
• Ulrich Erhardt · Ladenburg, DE
• Volker Ladenberger · Schwetzingen, DE
• Harald Meyer · Monsheim, DE
• Bernd Bruchmann · Ludwigshafen, DE
• Karl-Heinz Schumacher · Ludwigshafen, DE

Key dates

• Filing date: Oct 4, 2002
• Grant date: Dec 4, 2007
• Expiry date: Dec 20, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2/50
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to radically copolymerizable acetophenone or benzophenone derivatives, which may be obtained by reacting a) acrylic or methacrylic compounds, which contain at least one isocyanate-reactive group [compounds a)], with b) compounds, which contain at least two isocyanate groups [compounds b)] and c) acetophenone or benzophenone derivatives, which contain at least one isocyanate-reactive group [compounds c)]. Said invention also relates to copolymers, which contain said copolymerizable photoinitiators, as well as to the use of said copolymers in UV-crosslinkable substances, in particular hot-melt pressure-sensitive adhesives.