ELECTRICALLY INSULATING COMPOSITION Russian patent published in 2010 - IPC H01B3/44 C08L27/06 

FIELD: chemistry.

SUBSTANCE: invention relates to polymer compositions based on plasticised polyvinyl chloride (PVC) with low flammability, low emission of smoke and hydrogen chloride during combustion, designed for insulating inner and outer casings of wires and cables used in high fire risk conditions. The electrically insulating composition contains the following (pts. wt): suspended polyvinyl chloride 100, ester plasticiser 50-70, calcium-zinc complex stabiliser 5-12, epoxidated soya oil 1-4, calcium carbonate 100-500, antimony trioxide 5-10, zinc oxide 0.5-5, boric acid 0.1-1.5, additive (1,3,5-tris-(2,3-dibromoisopropyl)-isocyanurate (FR-930) 0.5-10, zinc chloride 0.01, diphenylolpropane 0.1-0.5, polyethylene wax 0.1-0.5. The non-toxic complex stabiliser used can be: Baeropan MC 9917 KA, Baeropan MC 8703 KA, Naftosafe GKX 2208, Naftosafe GKX 2292 Akropan 2593 PX, Akropan 2530 PX.

EFFECT: low smoke emission level in combustion conditions with preservation of the degree of non-flammability, improved fluidity of the molten polymer, and provision for environmental safety and competitive edge of the soft cable compound.

2 cl, 1 tbl