Basf Coatings Gmbh

Andreas Dopp

Heinz-Peter Rink

Bernhard Lettmann

Elke Westhoff

Lea Fedeler

Markus Saedler

Michael Grabbe

Anne Fickers

Henan Li

Henrik Ravn

The present disclosure relates to two-component coating material compositions including a paint base component A and a curing component B. The paint base component A includes one or more polyols A1 selected from the group of polyols containing ester groups and which possess a hydroxyl number of 300 to 500 mg KOH/g and have a hydroxyl group functionality of greater than 2. The curing component B includes one or more polyisocyanates B1 having on average 2.4 to 5 NCO groups. The two-component coating material composition possesses a solids content of at least 96 wt %, and the molar ratio of the NCO groups in the curing component B to the acidic hydrogen atoms in the paint base component A is from 1:1.15 to 1:0.95. The disclosure further relates to a method for coating fiber-reinforced plastics and to a method for producing coated fiber-reinforced plastics, and to coating fiber-reinforced plastics.

Two-component coating compositions for coating fiber-reinforced plastics materials

Disclosed is an aqueous clearcoat material for producing a waterborne urethane-based two-coat coating system, comprising at least one secondary polyacrylate dispersion having a polyacrylate glass transition temperature T&#x2267;20&#xb0; C. and at least one hybrid polyacrylate-polyurethane dispersion with a weight ratio of the polyacrylate fraction of the secondary dispersion to the polyacrylate-polyurethane fraction of the hybrid dispersion of 1:1 to 4:1, and as curing agent at least one low-viscosity aminosulfonic polyisocyanate and an aqueous basecoat material for producing a waterborne two-coat coating system comprising at least one polyurethane dispersion, at least one hybrid polyacrylate-polyurethane dispersion, and at least one melamine resin. Also disclosed are a waterborne two-coat coating system comprising the clearcoat material and the basecoat material, a process for producing it, its use to coat a substrate, and substrates coated with it.

Water-based two layer coating systems based on urethane, the use thereof and substrates coated with them

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Andreas Dopp