Patents by Inventor Fuyou LU

Fuyou LU 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).

  • Storage-stable polyisocyanate composition and preparation method therefor
    Patent number: 12723124
    Abstract: The present invention belongs to the technical field of preparing isocyanate derivatives, and particularly relates to a storage-stable polyisocyanate composition and a preparation method therefor. The method comprises: in the presence of a catalyst system, subjecting an isocyanate monomer to a polymerization reaction; terminating the reaction after a suitable conversion rate is reached, so as to obtain a polyisocyanate reaction solution; and then performing heat treatment on the obtained polyisocyanate reaction solution to obtain a heat-treated polyisocyanate mixture, wherein the heat treatment temperature is 10-30° C. higher than the heat-sensitive temperature of the obtained polyisocyanate product, and the heat treatment time is 5-30 min; and then performing separation treatment on the heat-treated polyisocyanate mixture. When the polyisocyanate composition of the present invention is stored at 50° C.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: September 1, 2026
    Assignees: WANHUA CHEMICAL GROUP CO., LTD., WANHUA CHEMICAL (NINGBO) CO., LTD.
    Inventors: Bin Shi, Yonghua Shang, Tao Yu, Xianfeng Zhang, Chengyue Yan, Zhicheng Zhu, Wei Liu, Fuyou Lu, Nuancheng Wang, Yuqi Wang, Yuan Li, Xiaopeng Zhang, Haijun Li
  • STORAGE-STABLE POLYISOCYANATE COMPOSITION AND PREPARATION METHOD THEREFOR
    Publication number: 20230272151
    Abstract: The present invention belongs to the technical field of preparing isocyanate derivatives, and particularly relates to a storage-stable polyisocyanate composition and a preparation method therefor. The method comprises: in the presence of a catalyst system, subjecting an isocyanate monomer to a polymerization reaction; terminating the reaction after a suitable conversion rate is reached, so as to obtain a polyisocyanate reaction solution; and then performing heat treatment on the obtained polyisocyanate reaction solution to obtain a heat-treated polyisocyanate mixture, wherein the heat treatment temperature is 10-30° C. higher than the heat-sensitive temperature of the obtained polyisocyanate product, and the heat treatment time is 5-30 min; and then performing separation treatment on the heat-treated polyisocyanate mixture. When the polyisocyanate composition of the present invention is stored at 50° C.
    Type: Application
    Filed: September 25, 2020
    Publication date: August 31, 2023
    Inventors: Bin SHI, Yonghua SHANG, Tao YU, Xianfeng ZHANG, Chengyue YAN, Zhicheng ZHU, Wei LIU, Fuyou LU, Nuancheng WANG, Yuqi WANG, Yuan LI, Xiaopeng ZHANG, Haijun LI