H - Electricity – 01 – F
Patent
H - Electricity
01
F
400/4024, 204/91
H01F 5/06 (2006.01) C08F 299/02 (2006.01) C08G 18/67 (2006.01) C08G 18/81 (2006.01) C08G 59/14 (2006.01) C09D 5/25 (2006.01) C09D 163/10 (2006.01)
Patent
CA 1206671
26 ABSTRACT OF THE DISCLOSURE Disclosed is a UV-curable coating composition and method of preparing it, a method of coating a con- ductor with it, and the resulting coated conductor. The composition comprises about 20 to about 40% by weight of an acrylated epoxy which is the reaction product of an epoxy resin and an acrylate adduct. The acrylate adduct is the reaction product of an acrylate which may be either 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl methacrylate or mixture thereof, and either an anhydride or a diisocyanate. The anhydride may be phthalic anhydride, maleic anhydride, trimellitic anhy- dride, or mixtures thereof. The diisocyanate can be tol- uene diisocyanate, 4,4'-diisocyanato diphenyl methane, or mixtures thereof. The composition also includes about 4 to about 15% by weight of an acrylated blocked isocyanate which is the reaction product of caprolactam and an acry- lated isocyanate. The acrylated isocyanate is the reac- tion product of an acrylate which can be 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 2-hydroxyethyl meth- acrylate, or mixtures thereof, with an isocyanate which can be toluene diisocyanate, 4,4'-diisocyanato diphenyl methane, or mixtures thereof. The composition also in- cludes about 45 to about 65% by weight of a mono-acrylate of which at least 60% by weight is phenoxyethyl acrylate, about 5 to about 20% by weight of a polyacrylate of which at least about 50% is triethylene glycol diacrylate, about 2 to about 5% of a photoinitiator, and about 0.05 to about 0.3% by weight of an inhibitor. .
438215
Gorton William S. Jr.
Sattler Frank A.
Oldham And Company
Westinghouse Electric Corporation
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