Preparation method of rubber vulcanizing agent dimorpholinyl disulfide

Abstract

The invention discloses a preparation method of a rubber vulcanizing agent dimorpholinyl disulfide. The method comprises the following steps: adding a petroleum ether solvent into a reaction kettle, heating to 45-60DEG C, adding a sodium hydroxide pulvis, uniformly stirring, adding a morpholine solution and a disulfur dichloride solution in a dropwise manner within 1-1.5h, continuously stirring for 3h for a reaction, standing, separating out the petroleum ether solvent, and drying to obtain a white crystal. The method improves the quality and the yield of the above product, allows the acidity of the product to be not greater than 0.05 and the ash content to be not greater than 0.15, and realizes small discharge of three wastes.

Description

technical field

[0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing rubber vulcanizing agent dimorpholine disulfide. Background technique

[0002] Dimorpholine disulfide, as an advanced vulcanizing agent in the rubber industry, is widely used in the manufacture of tires and other rubber composite products, such as radial tires, bias rubber tires, engineering tires, butyl inner tubes and high-quality rubber products. , can also be used in rubber products such as cables, rubber rollers, oil seals, rubber shoes, etc., and can also be used as a highway asphalt stabilizer.

[0003] At present, domestic production of dimorpholine disulfide generally uses benzene, toluene, or gasoline as a solvent, which is easy to react with disulfur dichloride to produce toxic gas, which poses a big threat to the health of the workers and also has a negative impact on the governance of the environment. A lot of difficulties came, whic...