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US 4,593,051 AGranted
Photocopolymerizable compositons based on epoxy and polymer/hydroxyl-containing organic materials
AssigneeUnion Carbide Corporation
InventorJoseph V. Koleske
Life of this patent
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Abstract
This invention is directed to photocopolymerizable compositions comprising an epoxide containing two or more epoxy groups, a polymer/poly (active hydrogen) organic compound and a photoinitiator. The cured coating compositions exhibit a clear appearance, good water resistance and can have utility as automotive finishes, can finishes, appliance finishes, general metal finishes, adhesives, printing inks, and the like.
Claims23
A photocopolymerizable composition comprising:
- (a) an epoxide containing two or more epoxy groups,
- (b) a polymer-polyol dispersion prepared by the free radical polymerization of acrylonitrile or a mixture of acrylonitrile and styrene in an organic polyol, said polyol being a polyoxyalkylene polyol containing unsaturation, and
- (c) at least one aromatic onium salt photoinitiator.
A process for preparing a cured film coating comprising:
- (1) mixing until homogeneous a photocopolymerizable composition comprising an epoxide containing two or more epoxy groups, a polymer-polyol dispersion prepared by the free radical polymerization of acrylonitrile or a mixture of acrylonitrile and styrene in an organic polyol, said polyol being a polyoxyalkylene polyol containing unsaturation, and at least one aromatic onium salt photoinitiator;
- (2) applying the homogeneous photocopolymerizable composition as a film coating on a suitable surface or substrate;
- and
- (3) exposing the film coating to actinic irradiation at a wavelength within the ultraviolet and visible spectral regions or electron beam irradiation for a period of time sufficient to cure the film coating.
1 more element
Dependencies are inferred from the claim text.