Curable sealant composition
AssigneeDenovus LLC
InventorsDonald W. Taylor, Todd W. Scrivens, Laurie Denise Lovshe, Jeffrey T. Pachl
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Abstract
A radiation curable, flexible, paintable composition produced from epoxy compounds and one or more polyol(s) has enhanced durability, thick and thin film adhesion, resistance to mold growth and dimensional changes while reducing solvent emissions. The composition can reduce, if not eliminate, runs and drips during the thermal bake cycles which are associated with using conventional compositions in automotive applications.
Claims45
A method for providing a cured coating on a substrate comprising at least one member selected from the group consisting of metal, wood, concrete and cement from a composition comprising a combination comprising at least one epoxy functional compound, greater than about 0.1 wt % and less than 20 wt % of at least one of ethyl vinyl acetate and copolymers thereof, and at least one photoinitiator wherein said method comprises:
- (a) exposing at least one component of the composition to a source of radiation;
- and
- (b) applying the composition onto a substrate thereby forming a coating upon the substrate.
A composition comprising a combination comprising:
- (a) about 40 to about 90 wt. % of at least one epoxy functional compound;
- (b) at least one member selected from the group consisting of ethyl vinyl acetate and copolymers thereof;
- (c) at least one polyol wherein the ratio of said at least one epoxy functional compound to said at least one polyol is greater than 1:1 to about 2:1;
- and
- (d) al least one photoinitiator.
A method of providing a self supporting article or layer comprising:
- (a) providing a first component comprising at least one epoxy functional compound, find a second component comprising at least one acid source, with at least one of the first component and second component comprising ethyl vinyl acetate and copolymers thereof, and
- (b) combining the first and second components so as to react the epoxy functional compound with the acid source.
A composition for forming a self-supporting article or layer comprising:
- (a) a first component comprising at least one epoxy functional compound, and
- (c) a second component comprising at least one acid source, wherein at least one of the first and second component comprises ethyl vinyl acetate and copolymers thereof.
A composition for forming a self-supporting article or layer comprising:
- (a) a first component comprising at least one epoxy compound, and
- (b) a second component comprising at least one acid source, wherein at least one of the first and second component comprises at least one polyol and at least one member selected from the group consisting of ethyl vinyl acetate and copolymers thereof.
A composition comprising a combination comprising:
- (a) at least one epoxy functional compound;
- (b) at least one member selected from the group consisting of ethyl vinyl acetate and copolymers thereof;
- (c) greater than 40 wt. % of at least one polyol;
- and
- (d) at least one photoinitiator.
A method for sealing a weld between at least two metallic substrates with a composition comprising a combination comprising at least one epoxy functional compound, at least one of ethyl vinyl acetate and copolymers thereof, at least one polyol and at least one photoinitiator wherein said method comprises:
- (a) applying the composition onto the substrate,
- (b) exposing at least a portion of the composition to at least one source of radiation;
- (c) heating at least a portion of the radiation exposed composition.
A method for providing a coating on a substrate comprising at least one member selected from the group consisting of metal, wood, concrete and cement from a composition comprising a first component and a second component wherein at least one of said first and second components comprise at least one epoxy functional compound, at least one polyol, at least one thickener, and at least one photoinitiator wherein said method comprises:
- (a) exposing at least one of said first and second components to a source of UV radiation;
- (b) combining the first and second components;
- and
- (c) applying the combined first and second components onto the substrate thereby forming a coating upon the substrate.
Dependencies are inferred from the claim text.