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About Us
Jiangxi Punhan New Material Co., Ltd. is located in Xiangtun Industrial Park, Dexing City, Jiangxi Province, covering an area of 120 acres with a registered capital of 70 million yuan and a total investment of 250 million yuan.
News
Stay up-to-date with the latest news from Jiangxi Punhan New Material Co., Ltd!
Products
The company's current main products include several series of products, including organosilicon sealing agents, polysiloxane/silicone oil, functional silane, pharmaceutical intermediates, etc.
Advantages
A high-tech enterprise engaged in the production of organic silicon new materials and a potential gazelle enterprise in Jiangxi Province.
Environment
Located in Xiangtun Industrial Park, Dexing City, Jiangxi Province, covering an area of 120 acres with a registered capital of 70 million yuan.
Recruitment
Sincerely invite like-minded individuals (leading projects and technologies) to discuss and develop together. There are wutong trees. I hope the phoenix will come to me!
Preparation of Diphenyldichlorosilane
2024.01.31

1. Phenyltrichlorosilane can be directly synthesized from chlorobenzene and silicon powder in one step in the presence of copper catalyst, while producing diphenyldichlorosilane as a byproduct.

2. Prepare diphenyldichlorosilane using silicon tetrachloride.

① Under nitrogen protection, Grignard reagent and lithium chloride or Grignard reagent and aluminum chloride, as well as chlorobenzene and initiator (the molar ratio of the initiator bromoethane or iodine to magnesium metal is 1-5%) are respectively added to react to produce phenyl Grignard reagent;

② Add silicon tetrachloride to the solvent containing phenyl Grignard reagent in a molar ratio of 1:1 (or 2:1);

③ Filter out suspended solids from the reaction solution;

④ Atmospheric distillation, collecting corresponding fractions, recovering chlorobenzene, and then distillation to obtain phenyltrichlorosilane (or diphenyldichlorosilane).