Patents by Inventor Xiqiang LIU

Xiqiang LIU 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).

  • Patent number: 11814505
    Abstract: A pipe- or tube-shaped article having an innermost layer, wherein the innermost layer has a thickness of 0.001 to 100 mm and comprises a polyolefin composition comprising a) a propylene-ethylene copolymer, wherein the amount of repeat units derived from ethylene is 1 to 20 wt % based on the weight of the propylene-ethylene copolymer and wherein the propylene-ethylene copolymer has a density of at most 0.9 g/cm3 as determined by ASTM D1505 and b) an olefin polymer selected from high-density polyethylene (HDPE), linear low density polyethylene (LLDPE), polypropylene (PP) and combinations thereof.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: November 14, 2023
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Dongbo Xing, Hongtao Shi, Kai Guo, Xiqiang Liu, Dong Wan, Maria Soliman
  • Publication number: 20230080269
    Abstract: The present invention relates to a multi-layer polypropylene film comprising: A base layer of polypropylene (2); Optionally, a tie layer (3) comprising a blend of polypropylene and an sacrificial engineering thermoplastic; A top layer (1) comprising film having a structured surface with water contact angles (WCA) superior to 104.5°, preferentially superior to 110°, more preferentially uperior to 120°, more preferentially superior to 130°; Wherein the top layer comprises a blend 20 to 40 wt % of polypropylene and 60 to 80 wt % of said engineering thermoplastic and in which the engineering thermoplastic has been selectively etched in order to create the said structured surface.
    Type: Application
    Filed: February 2, 2021
    Publication date: March 16, 2023
    Inventors: Karin Irene van de Wetering, Xiqiang Liu
  • Patent number: 11479663
    Abstract: The invention relates to a composition comprising: (A) a propylene-based polymer which is a propylene homopolymer or a propylene copolymer consisting of at least 90 wt % of propylene monomer units and at most 10 wt % of ethylene monomer units and/or an ?-olefin monomer units having 4 to 10 carbon atoms, (B) a terpolymer of propylene, an ?-olefin having 4 to 10 carbon atoms and ethylene and (C) a copolymer of ethylene and an ?-olefin having 4 to 10 carbon atoms, wherein the copolymer (C) has a density of at least 0.880 g/cm3, wherein the amount of the propylene-based polymer (A) is at least 60 wt % with respect to the total composition.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: October 25, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Jing Guo, Xiqiang Liu, Chaodong Jiang, Shengying Qian, Chunfa Li
  • Publication number: 20210301115
    Abstract: The invention relates to a composition comprising: (A) a propylene-based polymer which is a propylene homopolymer or a propylene copolymer consisting of at least 90 wt % of propylene monomer units and at most 10 wt % of ethylene monomer units and/or an ?-olefin monomer units having 4 to 10 carbon atoms, (B) a terpolymer of propylene, an ?-olefin having 4 to 10 carbon atoms and ethylene and (C) a copolymer of ethylene and an ?-olefin having 4 to 10 carbon atoms, wherein the copolymer (C) has a density of at least 0.880 g/cm3, wherein the amount of the propylene-based polymer (A) is at least 60 wt % with respect to the total composition.
    Type: Application
    Filed: July 30, 2018
    Publication date: September 30, 2021
    Inventors: Jing Guo, Xiqiang Liu, Chaodong Jiang, Shengying Qian, Chunfa Li
  • Publication number: 20210079203
    Abstract: A pipe- or tube-shaped article having an innermost layer, wherein the innermost layer has a thickness of 0.001 to 100 mm and comprises a polyolefin composition comprising a) a propylene-ethylene copolymer, wherein the amount of repeat units derived from ethylene is 1 to 20 wt % based on the weight of the propylene-ethylene copolymer and wherein the propylene-ethylene copolymer has a density of at most 0.9 g/cm3 as determined by ASTM D1505 and b) an olefin polymer selected from high-density polyethylene HDPE), linear low density polyethylene (LLDPE), polypropylene (PP) and combinations thereof.
    Type: Application
    Filed: January 15, 2019
    Publication date: March 18, 2021
    Inventors: Dongbo XING, Hongtao SHI, Kai GUO, Xiqiang LIU, Dong WAN, Maria SOLIMAN