Flexible bonded mica insulation

Claim 1

A FLEXIBLE ELECTRICALLY INSULATING MATERIAL COMPRISING A LAYER OF POLYTETRAFLUOROETHYLENE, A LAYER OF MICA FLAKES DISPOSED THEREON, AND A FLEXIBLE BONDING AGENT BINDING THE LAYER OF POLYTETRAFLUOROETHYLENE AND THE MICA FLAKES INTO A WHOLE, SAID BONDING AGENT COMPRISING A POLYSILOXANE MATERIAL COMPOSED ESSENTIALLY OF (A) 5 TO 70 PERCENT BY WEIGHT OF A BENZENE SOLUBLE RESIN COPOLYMER COMPOSED ESSENTIALLY OF STRUCTURAL UNITS OF SIO2 AND (CH3)3SIO1/2 AND IN SAID COPOLYMER THE RATIO OF (CH3)2SIO2 UNITS IS BETWEEN 0.6 TO 0.9 INCLUSIVE AND (B) 95 TO 30 PERCENT BY WEIGHT OF A BENZENE SOLUBLE ORGANOSILOXANE OF AT LEAST 1,000,000 CENTISTOKES AT 25*C. AND SAID ORGANOSILOXANE HAVING THE GENERAL FORMULA R''2SIO WHERE R'' IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF METHYL AND PHENYL AND AT LEAST 90 PERCENT OF THE TOTAL NUMBER R'' RADICALS ARE METHYL TO BIND THE LAYERS OF POLYTETRAFLUOROETHYLENE AND THE MICA FLAKES INTO A WHOLE.