CURRENT-CONDUCTING RUBBER WITH POSITIVE THERMAL COEFFICIENT OF RESISTANCE BASED ON RECLAIMED WASTE FROM TIRE WASTES Russian patent published in 2021 - IPC C08L23/00 

FIELD: chemistry.

SUBSTANCE: invention relates to rubber production, in particular, to production of electroconductive elastomers with positive thermal coefficient of resistance (PTCR) based on regenerate from tire wastes and current-carrying technical carbon. Described is an electrically conductive rubber mixture with a positive thermal coefficient of resistance (PTCR), comprising a tire regenerate obtained by devulcanisation of rubber crumbs in a medium of stearic acid, electroconductive technical carbon CH85, altax, diphenyl guanidine and sulphur, with the following ratio of initial components, wt. pts.: tire reclaim obtained by devulcanisation of rubber crumbs in stearic acid medium - 100.0, electroconductive technical carbon CH85 -10.0–20.0, altax - 1.0, diphenylguanidine - 0.5, S - 1.0.

EFFECT: technical result is conduction of rubber with electric conductivity plate regenerate with positive thermal coefficient of resistance.

1 cl, 1 tbl, 5 ex