Patents by Inventor Jinlin YU

Jinlin YU 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).

  • AZO dye for waterless dyeing of natural fibers in supercritical COfluid, and preparation method thereof
    Patent number: 11193024
    Abstract: The invention discloses a special-purpose reactive disperse dye for waterless dyeing of natural fibers in supercritical CO2 fluid and an intermediate thereof. The reactive disperse dye has a longer alkane-chain bridging group between a chromophoric parent structure and an active group of the dye, which effectively promotes the donating-withdrawing effect on the electron cloud in the conjugated system, enhances the hyperchromic effect, effectively reduce the influence of the active group itself and its reaction on the dye coloring system, improves the color and stability against acid and alkali of the dye, and facilitate the improvement of the compatibility of the dye with supercritical fluid and the dyeing performance for natural fibers as well. The invention also discloses an intermediate of the reactive disperse dye, and a method for preparing the reactive disperse dye.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: December 7, 2021
    Assignees: SOOCHOW UNIVERSITY, JIANGSU DANMAO TEXTILE CO., LTD., NANTONG TEXTILE AND SILK INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Jiajie Long, Kai Yan, Dao Xu, Jinlin Yu
  • AZO DYE FOR WATERLESS DYEING OF NATURAL FIBERS IN SUPERCRITICAL CO2 FLUID, AND PREPARATION METHOD THEREOF
    Publication number: 20210332245
    Abstract: The invention discloses a special-purpose reactive disperse dye for waterless dyeing of natural fibers in supercritical CO2 fluid and an intermediate thereof. The reactive disperse dye has a longer alkane-chain bridging group between a chromophoric parent structure and an active group of the dye, which effectively promotes the donating-withdrawing effect on the electron cloud in the conjugated system, enhances the hyperchromic effect, effectively reduce the influence of the active group itself and its reaction on the dye coloring system, improves the color and stability against acid and alkali of the dye, and facilitate the improvement of the compatibility of the dye with supercritical fluid and the dyeing performance for natural fibers as well. The invention also discloses an intermediate of the reactive disperse dye, and a method for preparing the reactive disperse dye.
    Type: Application
    Filed: November 23, 2018
    Publication date: October 28, 2021
    Inventors: Jiajie LONG, Kai YAN, Dao XU, Jinlin YU