Super Corona Dope 4226 Technical Data Sheet 4226-Liquid Description Our 4226 Super Corona Dope is a highly insulating coating with excellent arc and corona resistance. This low viscosity, one part varnish coating is easy to use and adheres well to many substrates. Applications & Usages The 4226 insulates transformers, coils, motor windings, and various electric generator parts against arc and corona. As well, it protects these parts from corrosion and moisture. Benefits and Features High dielectric strength4 100 V/mil (dry) 3 000 V/mil (wet) Excellent moisture resistant Excellent finishtough, flexible, glossy, and durable transparent coat Good adhesion a) Usage Parameters Temperature Ranges Properties Value Properties Value Tack Free 10 min Constant Service -40 to 180 C Recoat Time 4 h Temperature -40 to 356 F d) Dry to Handle 20 min Storage Temperature 25 C 104 F Full Cure 22 C 72 F 2 to 3 days Full Cure 80 C 176 F 1 h d) The product should not be exposed to direct Full Cure 110 C 230 F 30 min sunlight. b) Shelf Life 5 y c) 2 Theoretical 1 L Coverage <78 000 cm 2 <84 ft Recommended Thickness 25 to 38 m 1 to 1.5 mil a) Cure times assume a thickness of 1 mil and standard conditions. b) After date of shipment c) Idealized estimate based on dip coat method and 90% transfer efficiency Chemical Components Name CAS Number Modified Alkyd Resin proprietary Xylene 1330-20-7 Ethyl benzene 100-41-4 Toluene 108-88-3 Cumene 98-82-8 Page 1 of 5 Rev. Date: 24 November 2016 / Ver. 1.02 Super Corona Dope 4226 Technical Data Sheet 4226-Liquid Properties of Cured 4226 Physical Properties Method Value Color Visual Clear Moisture Resistance Excellent Oil Resistance ASTM Fair Electric Properties Method Value a) Dielectric Strength 2 mil (dry) ASTM D149 4100 V/mil b) Dielectric strength 2 mil (wet) ASTM D149 3000 V/mil c) Insulation Class 130(B) 150(F) 180(H) a) After conditioning in air at 25 C for 24 h coat thickness 50 m b) After conditioning in water at 25 C for 24 h coat thickness 50 m c) Meets UL EIS standards Properties of Uncured 4226 Physical Properties Method Value Viscosity 25 C 77 F ASTM D2196 105 cP 0.105 Pas Solids Content (w/w) 35% 1% Density 0.926 0.010 g/mL Flash Point ASTM D93 27 C 81 F Odor aromatic a) Brookfield viscometer with spindle LV1 Compatibility Adhesion The 4226 insulation coating adheres well to copper and steel however, it is not compatible with contaminants like water, oil, and greasy flux residues that may affect adhesion. If contamination is present on the substrate, clean the surface first. 4226 Adherence Compatibility Substrate Note Copper Excellent Steel Excellent Page 2 of 5 Rev. Date: 24 November 2016 / Ver. 1.02