UV curable deck sealer
OwnerAndrew A. Sokolinventor
Life of this patent
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Abstract
A substantially 100% solids sealer composition for use with wood and, in particular, weathered wood surfaces and other porous surfaces is prepared from a mixture of UV curable acrylates and a photoinitiator blend. The composition may further include fillers, fungicides, insect repellents, animal repellents, UV light absorbers, pigments, dyes, and the like. The photoinitiator blend is used at relatively low levels to controll the degree of polymerization.
Claims16
A substantially 100% solids sealant composition for application to a porous surface which comprises:
- (a) a polymerizable compound which is a mixture of acrylates, the acrylate mixture comprising at least a first and a second acrylate, the second acrylate having a lower mean molecular weight than the first acrylate;
- and
- (b) a mixture of organic photoinitiators which initiates the polymerization reaction upon exposure of the composition to ultraviolet light, the mixture consisting essentially of:
- (1) a blend of:
- (a) phosphine oxide;
- (b) a phenyl ketone;
- (2) a first propanone;
- and
- (3) a mixture of:
- (a) a first benzophenone;
- (b) a second benzophenone, the second benzophenone being different from the first benzophenone;
- (c) a second propanone, the second propanone being different from the first propanone, and wherein the mixture of photoinitiators is present in a respective weight ratio of (a) to (b) to (c) of 0.5-1.0:0.031.0:0.51.0.
A substantially 100% solids sealant composition for application to a porous surface which comprises:
- (a) a polymerizable compound which is a mixture of acrylates, the acrylate mixture comprising at least a first acrylate and a second acrylate, the second acrylate having a lower mean molecular weight than the first acrylate;
- (b) a mixture of organic photoinitiators selected from the group consisting at least one ketone, at least one benzophenone and at least one phosphine oxide, the mixture comprising from about 0.001% to about 2.0% by weight, based on the total weight of the composition;
- and
- (c) a filler for controlling the degree of penetration of the composition into the surface, the filler being selected from the group consisting of fumed silica, polyethylene, polytetrafluoroethylene, clays, kiesulguhr earth and mixtures thereof.
Dependencies are inferred from the claim text.