ELECTRICALLY INSULATING COMPOSITION Russian patent published in 2013 - IPC C08L27/06 H01B3/44 C08K3/22 C08K3/26 C08K3/04 C08K5/02 C08K5/103 C08K5/3492 C08K13/02 

FIELD: chemistry.

SUBSTANCE: invention relates to electrical engineering, specifically to cable engineering and polymer compositions based on plasticised polyvinyl chloride (PVC) with low inflammability, release of smoke and hydrogen chloride during combustion, intended for insulating inner and outer sheaths of cables. The electrically insulating composition contains suspended polyvinyl chloride, an ester plasticiser - dioctyl phthalate, tricresyl phosphate, chalk, soot, a stabiliser - melanine, antipyrenes - magnesium hydroxide and ammonium polyphosphate, smoke absorber - chlorinated paraffins, lubricant agent - calcium stearate, antioxidant - diphenylol propane and filler - organoclay, which is a product of modifying montmorillonite from the Gerpegezh deposit of the Kabardino-Balkaria Republic with cation-exchange capacity of 95 mg-eq/100 g clay with urea, in amount of 10% of the mass of montmorillonite.

EFFECT: obtaining a composition characterised by high non-flammability and low release of smoke during combustion.

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