METHOD FOR PRODUCTION OF MULTIPLE APPLICATION IMPREGNATING COMPOSITION AND MICA-PAPER CAPACITORS MANUFACTURE METHOD Russian patent published in 2012 - IPC H01G4/06 H01G4/16 H01G4/22 H01G4/32 C08L63/00 C08L63/04 C08J5/00 C08J5/24 

FIELD: electricity.

SUBSTANCE: method for production of a multiple application impregnating composition for manufacture of mica-paper capacitors is as follows: the impregnating composition base is represented by diphenylolpropane dicyanate which is heated, one introduces a catalyst, performs a polymerisation stage with a reversible polymerisation stage performed by way of heating diphenylolpropane dicyanate up to a temperature of 95±5°C, the catalyst is represented by diphenylolpropane in an amount of 1.5-2%, before repeated usage of the worked-out impregnating composition one performs introduction of no less than 50% of freshly prepared impregnating composition. One also proposes a method for mica-paper capacitors manufacture. One produces the multiple application impregnating composition, manufactures mica-paper capacitors using such composition; thus one enables the catalyst application simplification and efficient expenditure of expensive dicyanate used for capacitors impregnation.

EFFECT: method ensures the required value of the impregnating composition viscosity by way of the composition polymerisation process adjustment under prolonged temperature exposures and the required electrical parameters of mica-paper capacitors impregnated with the multiple application composition.

2 cl, 3 tbl, 2 dwg, 5 ex