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US 8,795,792 B2Granted
Process for forming multilayer coating with radiation curable polyene/polythiol coating compositions
AssigneePPG Industries Ohio, Inc.
InventorsMark P. Bowman, Stephen J. Thomas, David N. Walters
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Abstract
A process for forming a color-clear multilayer coating on a substrate is disclosed. The clear topcoat comprises a polyene and a polythiol that is radiation curable.
Claims14
A process for refinishing a motor vehicle part comprising forming a multilayer coating on a substrate comprising:
- (a) forming a basecoat layer containing organic and/or inorganic color- and/or effect-imparting pigments on the substrate that is a metal or plastic part of a motor vehicle precoated with a primer, primer surfacer or other it coating;
- (b) forming a clear topcoat layer on the basecoat layer by depositing a radiation curable topcoat composition onto the basecoat layer in which the topcoat composition comprises:
- (i) a polyene comprising polyurethane (meth)acrylate or polyester (meth)acrylate,
- (ii) a polythiol;
- and
- (c) exposing the topcoat composition to radiation to cure the topcoat.
3 more elements
A process for refinishing a motor vehicle part comprising forming a multilayer coating on a substrate comprising:
- (a) forming a basecoat layer containing organic and/or inorganic color- and/or effect-imparting pigments on the substrate that is a metal or plastic part of a motor vehicle precoated with a primer, primer surfacer or other intermediate coating;
- (b) forming a clear topcoat layer on the basecoat layer by depositing a radiation curable topcoat composition onto the basecoat layer in which the topcoat composition comprises:
- (i) a polyene comprising polyurethane (meth)acrylate,
- (ii) a polythiol;
- and
- (c) exposing the topcoat composition to radiation to cure the topcoat.
3 more elements
Dependencies are inferred from the claim text.