A kind of clean production method of tetrabenzylthiuram disulfide

Abstract

The invention discloses a clean production method of tetrabenzylthiuram disulfide. Reactions are carried out in two steps. Dibenzylamine, alkali and carbon disulfide are reacted to form an intermediate, the intermediate is separated out and added to a new reaction container for neutralization and oxidation, and mother solutions obtained in the two steps are reused in each step. The clean production method has the advantages that the condensation reaction and the oxidation reaction are carried out in two steps, the mother solutions generated in each step are recycled, no waste water and waste residues are generated, the pollution is small, energy conservation and environmental protection are achieved, the production cost is reduced, the process safety hazards are reduced, the product yield is high, and the clean production method is adaptable to national policy requirements for green chemical engineering.

Description

technical field

[0001] The invention relates to a production method of tetrabenzylthiuram disulfide, in particular to a low-cost, clean and environment-friendly method for producing tetrabenzylthiuram disulfide, which belongs to the technical field of fine chemicals. Background technique

[0002] Rubber accelerator Tetrabenzylthiuram disulfide (TBzTD) is a new, safe and environmentally friendly thiuram accelerator. TBzTD is a safe secondary amine-based accelerator without nitrosamine hazards. Its high relative molecular weight and performance are incomparable to low relative molecular weight thiurams. The main features of this product are: (1) The vulcanization acceleration effect is equivalent to TMTD, the vulcanization speed is slightly slower than TMTD, but the stability is better than TMTD; (2) It will not produce carcinogenic nitrosamines, it is a green, A safe, environmentally friendly and efficient vulcanization accelerator that can replace TMTD, TETD, and MPhTD; (3)...

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