IMPREGNATING INSULATING ENAMEL Russian patent published in 2016 - IPC C08L83/04 C09D183/04 C09D5/25 

FIELD: electricity.

SUBSTANCE: invention relates to electric engineering, and more specifically to compositions of insulating coatings and impregnation compounds for windings of electrical machines and mechanisms operated at high temperatures and intended mainly for application of coating by dipping. Impregnating insulating enamel includes polymethylphenylsiloxane lacquer, metal oxides, acrylate copolymer, butyl acetate, silicone antifoamer, rheological additive with thixotropic effect and aromatic solvent.

EFFECT: coatings are obtained with electric strength of enamel film at AC voltage (50 Hz) at temperature of 15-35°C and relative humidity of 45-75% equal to at least 60 kV/mm and specific volume resistance of enamel film in initial state at temperature of 15-35°C relative humidity of 45-75% equal to at least 1,0·10¹² Ohm·cm.

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