Curable sealant composition
First Claim
Patent Images
1. A composition obtained by combining a mixture comprising at least one epoxy, at least one polyol, a thickener, a photoinitiator and at least one monomer wherein said monomer comprises at least one member selected from the group consisting of acrylates and caprolactones.
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Accused Products
Abstract
A UV curable, flexible, paintable composition is disclosed. The disclosed composition has enhanced durability, thick and thin film adhesion, resistance to mold growth and dimensional changes while reducing solvent emissions. The disclosed composition reduces, if not eliminates, runs and drips during the thermal bake cycles which are associated with using conventional compositions in automotive applications.
169 Citations
34 Claims
- 1. A composition obtained by combining a mixture comprising at least one epoxy, at least one polyol, a thickener, a photoinitiator and at least one monomer wherein said monomer comprises at least one member selected from the group consisting of acrylates and caprolactones.
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2. A composition comprising at least one cationic curing epoxy, at least two polyester polyols, at least one phenoxy resin, silica and an amount of a UV photoinitiator sufficient to cause at least a portion of the composition to cross link when exposed to a source of UV radiation.
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4. A fluid radiation curable composition comprising a combination of at least one cationic epoxy, bis-F-epoxy, at least one polyester polyol, at least one thickener comprising silica and at least one photoinitiator.
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5. A fluid radiation curable composition comprising a combination of at least one cycloaliphatic epoxy, at least one polyester polyol, at least one thickener comprising silica, at least one photoinitiator and at least one phenoxy resin wherein the composition is essentially free of volatile organic compounds.
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6. A fluid radiation curable composition comprising a combination of at least one cycloaliphatic epoxy, at least one polyester polyol, at least one thickener comprising silica, at least one photoinitiator and at least one monomer.
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19. A method for treating an automotive component comprising,
providing a fluid radiation curable composition comprising a combination of at least one epoxy, at least one polyester polyol, at least one thickener comprising silica and at least one photoiniator, providing an automotive component having an E-coated surface, applying the composition onto said automotive component, substantially simultaneously with said applying exposing the composition to a source of radiation sufficient to cause in-situ cross linking of at least a portion of the composition, heating said at least partially cross-linked composition to a temperature sufficient to improve the adhesion of the cross-linked composition to the E-coated surface, painting the composition and said component.
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20. A method for sealing a welded joint or a seam between automotive components comprising,
providing a fluid radiation curable composition comprising a combination of at least one epoxy, at least one polyester polyol, at least one thickener comprising silica and at least one photoiniator having a viscosity of about 20,000 to about 80,000 centipoise, providing automotive components having a weld or seam therebetween, applying the composition onto said weld or into said seam, substantially simultaneously with said applying exposing the composition to a source of radiation sufficient to cause in-situ cross linking of a least a portion of the composition wherein said cross-linked composition is substantially shrink-free in accordance with ASTM D2453, painting the composition and said component.
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21. A method for repairing a painted automotive component comprising:
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providing a radiation curable composition comprising a combination of at least one epoxy, at least one polyester polyol, at least one phenoxy resin, at least one thickener comprising silica and at least one photoiniator, providing a painted automotive component, applying the composition onto said painted automotive component as a spray or gel, exposing the composition to a source of radiation sufficient to cause in-situ cross linking of a least a portion of the composition thereby obtaining a cross-linked composition having a Shore D hardness of at least about 60, sanding the composition and painting the composition and said component. - View Dependent Claims (34)
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Specification