The thiuram-type accelerator is a widely used vulcanization accelerator in rubber products. It includes monosulfide, disulfide and polysulfide. Among them, the disulfide and polysulfide thiuram are easy to release active sulfur under the conventional vulcanization temperature, so the rubber can be vulcanized without adding sulfur yellow, which is called “sulfur-free vulcanization”. The vulcanization accelerator with disulfide thiuram is mostly used as Tetramethyl Thiuram Disulfide (TMTD), Tetraethyl Thiuram Disulfide (TETD), etc. Tetra-methyl thiuram monosulfide (TMTM) and tetramethyl thiuram disulfide (TMTD) are good-performance vulcanization accelerators for rubber, but in recent years, it has been found that they produce amine nitrite during vulcanization, so new types of vulcanization accelerators with better performance and no carcinogenic substances are actively developed. Tetrabenzyl thiuram disulfide (TBzTD) is one of the rubber accelerator thiuram products, which is an efficient and green vulcanization accelerator suitable for natural rubber, p-butyl rubber, isoamyl rubber, butadiene rubber, nitrile rubber, butyl rubber, EPDM rubber and latex, its vulcanization promotion effect is similar to TMTD, the vulcanization speed is slightly inferior to TMTD, but the stability is better than TMTD, and it is widely used in the manufacture of wire and cable, tires, tapes It is widely used in the manufacture of wire and cable, tire, tape, colouring transparent products, footwear, heat-resistant products, etc. It does not produce carcinogenic nitrosamines and is a green, safe, environmentally friendly and efficient rubber vulcanization accelerator, which can replace TMTD, and TETD, with better processing safety and longer scorching time. TBzTD has a large molecular weight, and a high melting point and is not easy to decompose, so it does not produce carcinogenic nitrosamines and has become a new type of vulcanization accelerator with great development potential. TiBTM is a multi-functional and environment-friendly new type of accelerator with the performance of both a rubber vulcanization accelerator and an anti-coke agent, and it is the best substitute for TMTM (tetramethyl thiuram monosulfide). In the SBR/natural rubber system, when TiBTM and CTP are used with TBBS and CBS respectively, the two anti-coking agents have the same degree of delay in coking, and TiBTM can also make the vulcanization speed significantly faster, while CTP can sometimes cause a decrease in vulcanization speed. In natural rubber, the anti-coking effect of CTP is better than TiBTM, but TiBTM can increase the resistance of the rubber to vulcanization reversion, TiBTM is mainly used as a co-promoter. For SBR or natural rubber, either increasing the vulcanization temperature, changing the amount of sulfur or adding silica will not affect the performance of TiBTM which can both increase the scorch safety and vulcanization rate, and the use of accelerator TiBTM has no adverse effect on the physical properties of vulcanized rubber.

Sulfenamides accelerators mainly include TMTD(TT), TETD, TBTD, TMTM(TS), TiBTD, TBzTD, DPTT, TiBTM,