Shandong Yanggu Huatai Chemicals' first 10 thousand tons/year of rubber vulcanization accelerator M purification product line has come into operation, which is also the first product line in the world.
The purification product line solve three problems in present product process, including low quality,anti-environment and a lot of waste
Rubber vulcanization accelerator M is a rubber industry Important types of accelerators, usually, the main impurities of the accelerator and the resin intermediate (e.g. benzothiazole), the presence of impurities such that the quality of the product is not high.
The present, China's refined rubber vulcanization accelerator M is powered by a conventional alkali-soluble acid precipitation method, this process with a base volume, high cost, and another obvious flaw in environmental protection, not only have a lot of difficult to deal with black tar-like substance, but produce large amounts of wastewater.
The literature also aniline extraction and crystallization method refined rubber vulcanization accelerator M, is the use of rubber vulcanization accelerator M is not soluble aniline to remove dissolved aniline resin, but this method is a long process, the operation is more complex.
Another alkali-soluble toluene extraction, the crude product is a rubber vulcanization accelerator M were added to an excess of an alkaline solution, the filtrate was extracted with toluene several times to remove soluble impurities and insoluble impurities portions, together with an acid precipitation of the rubber vulcanization accelerator Agent M, although this method combines the advantages of high purity solvent extraction and alkali fusion yield, but still produce a lot of waste.
