Patents by Inventor Xianwei Qu

Xianwei Qu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Corrosion inhibitor for soft water circulation heating and cooling system and preparation method of corrosion inhibitor
    Patent number: 11781068
    Abstract: A corrosion inhibitor for a soft water circulation heating and cooling system, wherein the corrosion inhibitor is pentapentanol core hyperbranched macromolecule functionalized by isothiourea and carboxyl, which has a chemical formula of C5H7O5{COC(CH3)[CH2OCOCH2CH(COOH)SC(NH)NH2]2}5. The corrosion inhibitor provided by the present invention is non-phosphorus, biodegradable, non-toxic, low in cost and has good corrosion inhibition effect. Moreover, it has excellent corrosion inhibition performance for circulating heating and cooling systems using soft water as the water source, and can significantly improve the reuse rate of circulating water. The present invention also provides a preparation method of the corrosion inhibitor, which is simple, easy to obtain raw materials and easy to industrialize.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: October 10, 2023
    Assignees: Shanghai CEO Environmental Protection Technology Co., Ltd., Tongji University
    Inventors: Fengting Li, Yufei Lu, Bingru Zhang, Xianwei Qu, Chunjiang Li