High impact coatings
AssigneeLilly Industries Limited
InventorMatthew Ellison
Life of this patent
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Abstract
Curable coating compositions exhibiting exceptional resistance to high impact damage are described. The composition is formulated using a combination of poly and monofunctional ethylenically unsaturated monomers, oligomers and polymers. The composition can be applied using standard coating application techniques and cured rapidly under initiator dependent curing conditions. The compositions can be formulated to include optical brighteners, pigments, flow agents to enhance coating functionality in selected applications.
Claims30
A coating composition for producing high impact tolerant surfaces, said coating composition comprising 0 to about 70 percent by weight solvent and about 30% to 100% by weight of ethylenically unsaturated resin solids, said resin solids comprising about 10% to about 40% by weight of monoethylenically unsaturated monomers, about 60% to about 90% by weight polyethylenically unsaturated resins comprising a polyolefin functional aliphatic urethane (meth)acrylate having a functional equivalent molecular weight of about 500 to about 2500, a hexaolefin functional oligomer having a functional equivalent molecular weight of about 100 to about 250, and an alkoxylated polyol di- or tri(meth)acrylate monomer, and an initiator in an amount effective to polymerize the resin composition.
A radiation curable coating composition comprising a solvent solution containing greater than 40% by weight of ethylenically unsaturated resin solids, said resin solids comprising at least two monofunctional ethylenically unsaturated monomers, and at least two polyethylenically unsaturated urethane resins, one of which having a functional equivalent molecular weight of about 500 to about 2500 and the other having a functional equivalent molecular weight of about 100 to about 250, said polyethylenically unsaturated resins present in a weight ratio of about 2:1 to about 7:1 respectively, an effective amount of an optical brightener, and a free radical initiator in an amount effective to polymerize the resin composition.
Dependencies are inferred from the claim text.