Rapid cure paint technology
AssigneeDamar Industries Limited
InventorsVictor Holmes, Kishor Soma
Life of this patent
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Abstract
The present disclosure relates to a road marking paint composition for painting a coating a road substrate adapted for accelerated cure by exposure to UV light.
Claims28
A road marking composition for application of a coating up to 400 um thickness on a substrate, the road marking composition comprising a paint formulation adapted for accelerated cure by exposure to UV light and spray application, and a surface coating adapted for partial cover of the paint formulation, the paint formulation comprising:
- multifunctional acrylate oligomer comprising one or more of epoxy acrylate, polyester acrylate, and/or urethane acrylate having a concentration of between about 10 and 40% by weight;
- one or more of a multi and/or mono functional acrylate monomer comprising at least one of isobornyl acrylate, hexanedioldiacrylate, versatic acid, vinyl ester, lauryl acrylate, tetra hydroxy furfuryl acrylate and/or phenoxy ethyl acrylate having a concentration between about 15 and 50% by weight;
- a photoinitiator comprises bisacylphosphine oxide of about 1 to 4% by weight;
- thiol and/or mercaptan of about 1 to 4% by weight;
- an acid functional acrylate of about 0.5 to 3% by weight;
- and
- a first optically transmissive component, comprising quartz, nepheline syenite and/or feldspar filler adapted for substantial transparency to incident light of at least 365 to 405 nm,
- wherein the surface coating comprises a second optically transmissive component, comprising glass beads, angled glass and/or quartz agglomerates adapted for substantial transparency to incident light of at least 365 to 405 nm.
A road marking system comprising an LED UV light source of between 1.2 to 1.8 W/cm2 and a road marking composition for application of a coating up to 400 um thickness on a substrate, the composition comprising a paint formulation adapted for accelerated cure by exposure to UV light and spray application, and a surface coating adapted for partial cover of the paint formulation the paint formulation comprising:
- multifunctional acrylate oligomer comprising one or more of epoxy acrylate, polyester acrylate, and/or urethane acrylate having a concentration of between about 10 and 40% by weight;
- one or more of a multi and/or mono functional acrylate monomer comprising at least one of isobornyl acrylate, hexanedioldiacrylate, versatic acid, vinyl ester, lauryl acrylate, tetra hydroxy furfuryl acrylate and/or phenoxy ethyl acrylate having a concentration between about 15 and 50% by weight;
- a photoinitiator comprises bisacylphosphine oxide of about 1 to 4% by weight;
- thiol and/or mercaptan of about 1 to 4% by weight;
- an acid functional acrylate of about 0.5 to 3% by weight;
- and
- a first optically transmissive component, comprising quartz, nepheline syenite and/or feldspar filler adapted for substantial transparency to incident light of at least 365 to 405 nm,
- wherein the surface coating comprises a second optically transmissive component, comprising glass beads, angled glass and/or quartz agglomerates adapted for substantial transparency to incident light of at least 365 to 405 nm, and
- wherein the LED UV light source is adapted to cure the road marking composition when sprayed on the substrate.
A method of painting a coating on a substrate, comprising:
- spraying a paint formulation to form the coating on the substrate, the paint formulation comprising:
- multifunctional acrylate oligomer comprising one or more of epoxy acrylate, polyester acrylate, and/or urethane acrylate having a concentration of between about 10 and 40% by weight;
- one or more of a multi and/or mono functional acrylate monomer comprising at least one of isobornyl acrylate, hexanedioldiacrylate, versatic acid, vinyl ester, lauryl acrylate, tetra hydroxy furfuryl acrylate and/or phenoxy ethyl acrylate having a concentration between about 15 and 50% by weight;
- a photoinitiator comprises bisacylphosphine oxide of about 1 to 4% by weight;
- thiol and/or mercaptan of about 1 to 4% by weight;
- an acid functional acrylate of about 0.5 to 3% by weight;
- and
- a first optically transmissive component, comprising quartz, nepheline syenite and/or feldspar filler adapted for substantial transparency to incident light of at least 365 to 405 nm.
Dependencies are inferred from the claim text.