Accelators An accelerator is defined as the chemical added into a rubber compound to increase the speed of vulcanization and to permit vulcanization to proceed at lower temperature and with greater efficiency.• CBS, MBTS, MBT, DPG, DOTG, TMTM, TMTD, DPTT, DPTU, DTDM, TETD, ETU, NOBS, TBBS, ZDEC, ZDBC, F, ZDMC, NOBS, ZMBT,ZBEC, DCBS, TDEC