1964, coran et nnipa sɛnea nea efii vulcanizate nhwehwɛmu mu bae no kyerɛ no, wɔde 2-mercapto-thiazole (MBT) zinc nkyene ho nhyehyɛe a ɛyɛ vulcanization no ho nyansahyɛ mae: thiazole zinc nkyene a ɛne sulfur molecule no yɛɛ adwuma no, hyehyɛɛ MS-SX-Sy-Sm-SM, ne MS-sx-sm-sm-sm-sm-sm-sm-sm no Mfinimfini a ɛyɛ adwuma no yɛ sulfide a ɛnyɛ cross-linked, a vulcanizing promoter kuw wɔ awiei, na sɛ ɛporɔw nkakrankakra ma ɛyɛ free radicals a, active free radicals no ne rɔba hydrocarbons no yɛ ade ma wonya vulcanized rɔba.
Wɔ 1969 mu no, Manik ne nnipa afoforo a egyina srade acid a wɔde bae wɔ thiazole promoter nkɛntɛnso so, de promotion akwan soronko. ogye dii sɛ thiazole-te sɛ vulcanizing accelerator ne srade acid yɛɛ ionic active intermediates wɔ vulcanization bere mu, mmom free radicals sɛ coran said{3}} first of stear zinc stearate a thiazole nkyene wom, denam O atom ahorow a ɛwɔ N atom ne zinc stearate a ɛwɔ thiazole zinc nkyene mu no mu, sɛnea ɛbɛyɛ a Zn-S nkitahodi no bɛyɛ adwuma, yɛ nsakrae tebea (A), na (a) ɛne sulfur molecule (S8) no yɛ adwuma ma ɛyɛ adwuma wɔ rɔba a ɛyɛ adwuma (B){ MSSXR no ntumi nnyina, ions a ɛyɛ papa ne nea enye no porɔw, na wɔde ions no ka rɔba hydrocarbon ho ma ɛyɛ vulcanized rɔba.