Postformable ultraviolet curable coatings
AssigneeDeSoto, Inc.
InventorsA. Frank Leo, Clive J. Coady
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Abstract
A postformable ultraviolet curable primer coating composition is disclosed which consists essentially of: (A) from 10% to 80% of a linear acrylate-terminated polyurethane based on a polycarbonate diol; (B) from 2% to 35%, of acrylic acid; (C) from 15% to 65% of a monoethylenically unsaturated monomer having the rapid ultraviolet cure rate associated with acrylate monomers and having a glass transition temperature above 35.degree. C.,; (D) from 0% to 25% of a polyacrylate monomer; and (E) photoinitiator rendering the composition curable with ultraviolet light.
Claims6
A postformable ultraviolet curable highly adherent coating composition consisting essentially of:
- (A) from 15% to 30% of a linear acrylate-terminated polyurethane based on a polycarbonate diol, said polycarbonate diol having the formula:
- ##STR2## in which R is alkylene having from 2-20 carbon atoms;
- y is at least 1;
- and R and y are selected to provide a molecular weight for the polycarbonate diol reactant of from 300 to 3000;
- (B) from 10% to 20% of acrylic acid;
- (C) from 30% to 60% of a monoethylenically unsaturated monomer having the rapid ultraviolet cure rate associated with acrylate monomers and having a glass transition temperature above 55.degree. C.;
- (D) from 8% to 25% of a triacrylate monomer;
- and (E) photoinitiator rendering the composition curable with ultraviolet light.
Dependencies are inferred from the claim text.