Company Filing History:
3 out of 3 
1 out of 1 Years Active: 2017-2025
Title: Quanzhong Zhao: Innovator in Polymerization and Chlorine Gas Recovery
Introduction
Quanzhong Zhao is a prominent inventor based in Shanghai, China, known for his significant contributions to the fields of polymerization and chemical processes. With a total of four patents to his name, Zhao has developed innovative methods that enhance production efficiency and environmental sustainability.
Latest Patents
One of Zhao's latest patents is the "Aramid polymerization method using carbon dioxide as solvent." This method involves reacting phenylenediamine with benzenedicarbonyl dichloride, utilizing an acid-binding agent and liquid carbon dioxide or supercritical carbon dioxide as a reaction solvent. This environmentally friendly approach not only saves resources but also reduces production costs while ensuring safety for industrial applications. The resulting polycondensate exhibits controllable molecular weight and high product quality, with a yield in the aramid condensation stage reaching 98% and a solvent recovery rate exceeding 90%.
Another notable patent is the "Method for preparing chlorine gas through catalytic oxidation of hydrogen chloride." This innovative process allows for the preparation of chlorine gas by employing one-time hydrogen chloride feeding and multi-stage oxygen feeding, or vice versa. By preventing excessive reaction heat concentration, this method presents a viable chlorine gas recovery solution that can be industrialized through the Deacon catalytic oxidation process.
Career Highlights
Throughout his career, Quanzhong Zhao has worked with several companies, including Finings Co. Ltd. and Shanghai Fanglun New Material Technology Co., Ltd. His expertise in chemical processes and polymerization has made him a valuable asset in these organizations.
Collaborations
Zhao has collaborated with notable colleagues such as Nongyue Wang and Jianming Shao, contributing to advancements in their respective fields.
Conclusion
Quanzhong Zhao's innovative work in polymerization and chlorine gas recovery showcases his commitment to developing environmentally friendly and efficient chemical processes. His contributions continue to impact the industry positively, reflecting his status as a leading inventor in his field.
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