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N-甲基苯胺：汽油添加剂生产及出口

Why You Should Purchase Chemicals in China through Sunchem

Н-метиланилин: производство и экспорт присадок к бензинам

Н-метиланилин

N-methylaniline: gasoline additive production and export

N-methylaniline

Fluorinated Pharmaceutical Intermediates

4-fluorocyclohexanone, 2,2-difluoropropanol and 2-amino-3-bromo-5-fluoropyridine are important intermediates for the synthesis of anticancer drugs, anti-leukemia drugs and antibiotic drugs, respectively, with high value and market The advantages of good prospects, but due to the current high cost of raw materials, low yield of target products and cumbersome synthetic routes, the paper re-optimizes the synthetic route of these three target compounds. The realization of low raw material cost, high product yield and the optimal reaction conditions for pilot production.

Suspension Concentrate

Suspension concentrate is a coarse suspension system with water as the dispersing medium, which is evenly dispersed in water through grinding and crushing with the help of surfactants and other auxiliaries to form a uniform and stable suspension system with fine particles and high suspension and flow. Suspension not only has a small particle size, good dispersion, good fluidity, high suspension rate, high biological activity, the use of small doses, rainwater resistance, low residue, low toxicity to humans and animals, and other characteristics but also has good compatibility with the environment, safe to use, easy to administer and so on.

Hindered Amine Light Stabilizers

Hindered amine light stabilizers (HALS) are one of the most important thermal/light stabilizing agents of polymeric materials due to their excellent compatibility and photo-stabilization effect on organic materials. The synthetic technologies of hindered amine light stabilizers 5529 and 5513 were established in this paper. Through deeply systematic research, domestic technical difficulties in hindered amine light stabilizers 5529 industrial productions in taking off impurities and decolorization have been resolved, establishing the production technology of high quality 5529 and conducting industrial production practice. Based on the investigation of the transesterification between dimethyl sebacate and 1,2,2,6,6-pentamethyl-4-piperonal, the synthetic technologies of the Solvent method and free solvent method were established in the second chapter. The hindered amine light stabilizers 5529 were obtained in the yield of97.9% and 97.6% respectively and qualified as the advanced level of the kindred overseas products.

Rubber Vulcanization Accelerator

Vulcanization, as the key step in rubber process，directly affects the processing and performance of rubber products. Compared with sulfur alone, the presence of small amounts of accelerator together with sulfur can significantly improve the properties of final vulcanisate.

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