ELECTRICALLY INSULATING COMPOSITION Russian patent published in 2018 - IPC C08K3/20 C08L67/02 C08L23/18 C08L31/04 C08L9/02 C08L35/04 C08L9/06 C08L25/10 H01B3/42 H01B3/02 H01B3/44 

FIELD: cable industry.

SUBSTANCE: invention relates to the cable industry, namely to polymer electrical insulating compositions intended for use in cable structures, operated in conditions of increased fire hazard and low temperatures when exposed to diesel fuel and lubricating oils. Electrically insulating composition contains, by weight: copolymer of butylene phthalate and polybutylene glycol with butylenphthalate (50–95) wt % and polybutylene glycol (5–50) wt % – 20–90, polyethylene wax 1–5, high molecular weight polydimethylsiloxane 2–20, additionally contains aluminum hydroxide Al(OH)₃ or magnesium hydroxide Mg(OH)₂ 100–200, copolymer of ethylene with octene, or ethylene with vinyl acetate, or copolymer of butadiene with acrylonitrile, or copolymer of styrene with butadiene 8–60, high-density polyethylene modified with maleic anhydride 2–20.

EFFECT: technical result – invention makes it possible to provide a high degree of incombustibility, a lower rate of emission of smoke and hydrogen chloride during combustion in combination with increased resistance to diesel fuel and lubricating oils, as well as resistance to low temperatures.

1 cl, 8 tbl, 4 ex