Weiyuan Co., Ltd. has obtained a patent for pretreatment technology of raw materials for polycarbonate production. This technology can improve product quality and quality stability.

News on December 20, 2023, according to the announcement of the State Intellectual Property Office, Lihua Yiweiyuan Chemical Co., Ltd. obtained a project called "A system and method for pretreatment of raw materials for polycarbonate production" , authorization announcement number CN110577633B, application date is September 2019.

The patent abstract shows that the invention discloses a polycarbonate production raw material pretreatment system and method, including a bisphenol A storage tank, a diphenyl carbonate storage tank, a bisphenol A pipeline and a diphenyl carbonate pipeline; the bisphenol The A storage tank is connected to the polycarbonate reaction device through a bisphenol A pipeline, and a static mixer is provided on the bisphenol A pipeline; the diphenyl carbonate storage tank is incorporated into the static mixer inlet through the diphenyl carbonate pipeline. on the front bisphenol A pipeline. The production raw material pretreatment system of the present invention can avoid the problem of hue and quality deterioration caused by the exchange of raw materials and the decomposition of raw materials. Combined with the precise molar ratio of raw materials, it can greatly improve the quality and quality stability of polycarbonate products.