Thiourea accelerator promotion effectiveness is low and poor resistance to scorching, diene vulcanized rubber has been very little application. But in some special cases, such as the use of thiuram disulfide or polysulfide sulfur to give the body as a vulcanizing agent, it has the efficacy of the active agent; thiourea accelerator is basically a special accelerator for chloroprene rubber, can produce tensile strength, fixed extension stress, reduce permanent deformation and other performance of excellent vulcanization rubber.