Process for priming plastic substrates, coating compositions for this purpose, and the use thereof

US5399383A · kind A · utility

Assignee

• Herberts Gesellschaft mit beschrankter Haftung · DE

Inventors

• Manfred Mass · Remscheid, DE
• Klaus Bederke · Sprockhövel, DE
• Hermann Kerber · Wuppertal, DE

Key dates

• Filing date: Feb 16, 1994
• Grant date: Mar 21, 1995
• Expiry date: Feb 16, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L63/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for priming of plastic substrates without adverse effects on the mechanical stability by applying to a plastic substrate, particularly a polyolefin substrate, a coating composition which comprises from 10 to 35% by weight of binders having an OH number of from 40 to 150, prepared from (meth)acrylamides, hydroxyalkyl (meth) acrylates and copolymerisable, olefinically unsaturated compounds with subsequent modification by means of polyisocyanates, up to 20% by weight of further binders, from 30 to 70% by weight of organic solvents, from 15 to 45% by weight of pigments and/or fillers, from 0 to 15% by weight of additives and from 1 to 30% by weight of epoxide- or polyisocyanate-based crosslinking agents.