Process for the production of a chip resistant coating and/or a

Details Process for the production of a chip resistant coating and/or a Process for the production of a chip resistant coating and/or a

1989-02-23

1990-11-06

Lisignan, Michael

Coating processes

With post-treatment of coating or coating material

Heating or drying

427409, 524507, 524512, 524539, B05D 302

Patent

active

049685368

ABSTRACT:
An ecologically acceptable process is provided for the production of a chip resistant coating finishes by application of a chip resistant intermediate coating layer said coating comprising an aqueous based composition containing from 30 to 60% by weight carboxyl-containing polyesters or (meth)acrylates and copolymers thereof with vinyl compounds having an average acid value of 30 to 100 mg KOH/g and an average OH value of 50 to 250 mg KOH/g, neutralized with nitrogen bases, 5 to 25% by weight of a water-soluble or water-dispersible, blocked isocyanate prepolymer, 15 to 30% by weight water and @0 to 50% by weight pigments, fillers and/or auxililaries and additives, wet-in-wet overcoating with an aqueous filler, common stoving and painting with an aqueous based finishing paint.
The chip resistant coatings are aqueous (water) based and essentially free of ecologically contaminating volatile organic solvents.

REFERENCES:
patent: 4463038 (1984-07-01), Takeuchi et al.
patent: 4820555 (1989-04-01), Kuwajima et al.

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