UV-curable binders and their use for production of high gloss coatings

US6323254A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Jan Weikard · Neunburg vorm Wald, DE
• Wolfgang Fischer · Meerbusch, DE
• Manfred Muller · Berlin, DE

Key dates

• Filing date: Jan 10, 2000
• Grant date: Nov 27, 2001
• Expiry date: Jan 10, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D167/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to binders, which can be cured by free-radical polymerization initiated by UV light, and contain PA1 a) 10 to 90 parts by wt. of a polymer which contains, in chemically bound form, both ethylenically unsaturated groups and the reaction product of a resin containing abietic acid with not more than 50% of the OH groups of a polyfunctional alcohol having a molecular weight of less than 500, PA1 b) 10 to 90 parts by wt. of one or more mono- di-or oligoesters of (meth)acrylic acid having a molecular weight of less than 800 and PA1 c) optionally 0.1 to 10 parts by wt. of a photoinitiator component for the free-radical polymerization wherein the weights of a) and b) add up to 100. The present invention also relates to coating compositions containing these binders which are suitable for the production high-gloss coatings.