Patents by Inventor Weida OU

Weida OU 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).

  • Polylactic acid 3D printing material and preparation method thereof
    Patent number: 11453776
    Abstract: The present invention relates to a polylactic acid 3D printing material and a preparation method thereof, which belong to the technical field of polymer materials. The polylactic acid 3D printing material of the present invention comprises the following preparation raw materials in parts by weight: (a) 40-95 parts of crystalline or semi-crystalline polylactic acid, (b) 5-60 parts of noncrystalline polylactic acid, and (c) 0-1.0 parts of a processing aid. In the polylactic acid 3D printing material, a weight of dextral polylactic acid represents 0.5%-8% of a total weight of the polylactic acid. According to the present invention, a polylactic acid 3D printing material with a good aging resistance property can be obtained, by selecting and using two kinds of polylactic acids with different optical purities as raw materials, rationally distributing the proportional relationship between the two, and defining the content of dextral polylactic acid.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: September 27, 2022
    Assignee: KINGFA SCI. & TECH. CO., LTD.
    Inventors: Kai Xiong, Zhimin Yuan, Tongmin Cai, Xianbo Huang, Xiangbin Zeng, Jian Jiao, Changli Lu, Hui Yang, Kaijin Mai, Xueteng Dong, Weida Ou
  • POLYLACTIC ACID 3D PRINTING MATERIAL AND PREPARATION METHOD THEREOF
    Publication number: 20210024745
    Abstract: The present invention relates to a polylactic acid 3D printing material and a preparation method thereof, which belong to the technical field of polymer materials. The polylactic acid 3D printing material of the present invention comprises the following preparation raw materials in parts by weight: (a) 40-95 parts of crystalline or semi-crystalline polylactic acid, (b) 5-60 parts of noncrystalline polylactic acid, and (c) 0-1.0 parts of a processing aid. In the polylactic acid 3D printing material, a weight of dextral polylactic acid represents 0.5%-8% of a total weight of the polylactic acid. According to the present invention, a polylactic acid 3D printing material with a good aging resistance property can be obtained, by selecting and using two kinds of polylactic acids with different optical purities as raw materials, rationally distributing the proportional relationship between the two, and defining the content of dextral polylactic acid.
    Type: Application
    Filed: May 28, 2019
    Publication date: January 28, 2021
    Applicant: KINGFA SCI. & TECH. CO., LTD.
    Inventors: Kai XIONG, Zhimin YUAN, Tongmin CAI, Xianbo HUANG, Xiangbin ZENG, Jian JIAO, Changli LU, Hui YANG, Kaijin MAI, Xueteng DONG, Weida OU