Patents by Inventor Weida QU

Weida 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).

  • Biodegradable polyester composition and use thereof
    Patent number: 11370909
    Abstract: The present invention discloses a biodegradable polyester composition, wherein the biodegradable polyester composition comprises the following components in parts by weight: i) 58 to 80 parts by weight of an aliphatic-aromatic copolyester; ii) 20 to 32 parts by weight of starch; and iii) 0 to 10 parts by weight of a processing agent. The present invention unexpectedly found by research that by using an aliphatic-aromatic copolyester in which an amount of aromatic carboxylic acid accounts for a total amount of diacid is 44 mol % to 48 mol % as a matrix resin, where the aliphatic-aromatic copolyester has a crystallization peak width D of 5° C. to 16° C.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: June 28, 2022
    Assignee: KINGFA SCI. & TECH. CO., LTD.
    Inventors: Chunping Ouyang, Jian Jiao, Kaijin Mai, Xueteng Dong, Hui Yang, Weida Qu, Kai Xiong, Changli Lu, Xiangbin Zeng, Tongmin Cai, Xianbo Huang
  • BIODEGRADABLE POLYESTER COMPOSITION AND USE THEREOF
    Publication number: 20210061989
    Abstract: The present invention discloses a biodegradable polyester composition, wherein the biodegradable polyester composition comprises the following components in parts by weight: i) 58 to 80 parts by weight of an aliphatic-aromatic copolyester; ii) 20 to 32 parts by weight of starch; and iii) 0 to 10 parts by weight of a processing agent. The present invention unexpectedly found by research that by using an aliphatic-aromatic copolyester in which an amount of aromatic carboxylic acid accounts for a total amount of diacid is 44 mol % to 48 mol % as a matrix resin, where the aliphatic-aromatic copolyester has a crystallization peak width D of 5° C. to 16° C.
    Type: Application
    Filed: May 24, 2019
    Publication date: March 4, 2021
    Inventors: Chunping OUYANG, Jian JIAO, Kaijin MAI, Xueteng DONG, Hui YANG, Weida QU, Kai XIONG, Changli LU, Xiangbin ZENG, Tongmin CAI, Xianbo HUANG