Xinan Chemical and others have filed patents for a continuous synthesis system and method for chloropropyltrichlorosilane, aiming to improve reaction efficiency

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Xinan Chemical and others have filed for a patent on a continuous synthesis system and method for γ-chloropropyltrichlorosilane, aimed at improving reaction efficiency. According to information from the Intellectual Property Office, Zhejiang Xinan Chemical Group Co., Ltd. and Zhejiang Kaihua Synthetic Materials Co., Ltd. have applied for a patent titled “A Continuous Synthesis System and Method for γ-Chloropropyltrichlorosilane”; the publication number is CN120420927A, and the application was submitted in April 2025. The patent abstract indicates that the present invention provides a continuous synthesis system for γ-chloropropyltrichlorosilane, comprising a silicon trichloride storage tank, a chloropropene storage tank, a catalyst storage tank, a static mixer, an n-stage series-connected tubular reaction system, and a distillation unit ； The tubular reaction system includes a tubular reactor, a backpressure valve, a degassing device, and a condenser; the liquid-phase outlet of the degassing device is connected, along with the liquid-phase outlet of the condenser, to the next stage of tubular reactor ； The silicon trichlorohydride storage tank, the chloropropene storage tank, and the catalyst storage tank are each connected to the inlet of the static mixer, while the outlet of the static mixer is connected to the first-stage tubular reactor ； The inlet feed to the 2nd through n-th stage tubular reactors includes chloropropene ； The liquid-phase outlet of the degassing unit at stage n is connected to the inlet of the distillation unit, which is in turn connected back to the tubular reactor of stage 1, producing γ-chloropropyltrichlorosilane as the product. The present invention improves reaction efficiency and conversion rate, resulting in low production energy consumption and costs. The present invention also provides a synthesis method based on this system, with a simple process flow. According to Tianyancha, Zhejiang Xinan Chemical Group Co., Ltd., founded in 1993 and located in Hangzhou, is a company that specializes in the manufacturing of chemical raw materials and chemical products. The registered capital of the enterprise is 1,349,597.049 million RMB. According to the big data analysis conducted by Tianyancha, Zhejiang Xinan Chemical Group Co., Ltd. has made investments in 55 companies in total, participated in 5,000 bidding projects. In terms of property-related information, there are 734 trademark records and 589 patent records; furthermore, the company holds 281 administrative licenses.