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US 4,360,541 AGranted
Radiation cured microvoid coatings
AssigneeCelanese Corporation
InventorsJohn R. Costanza, George Collins
Life of this patent
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Abstract
This invention provides a process for preparing self-pigmented ultraviolet cured coating compositions, which involves preparing a dispersion of water in certain polyunsaturated ultraviolet curable monomers at a solids level of about 35 to about 85 weight percent, applying the dispersion as a coating on a substrate and curing the substrate coating by exposure to ultraviolet light. These cured compositions have utility as self-pigmented protective coatings.
Claims4
A process for obtaining a white self-pigmented ultraviolet cured coating composition which comprises:
- (a) forming a dispersion of water in monomers at about the 35 to 85 percent by weight solids level, utilizing about 20 to about 100 weight percent, by weight, based upon the solids portion of said dispersion, of emulsifiable alpha beta ethylenically unsaturated vinyl polymerizable compound containing on the average at least about two sites of alpha beta ethylenic unsaturation per molecule;
- up to about 60 weight percent on the same basis, of emulsifiable monounsaturated monomer;
- about 1 to about 20 weight percent, of a surfactant;
- and about 0.5 to about 15 weight percent, based on the total composition weight, of an ultraviolet photoinitiator;
- (b) applying said dispersion to a substrate as a coating;
- and
- (c) curing the substrate coating to a white, substantially opaque state by exposure to ultraviolet light.
4 more elements
Dependencies are inferred from the claim text.