Patents by Inventor Libo Du

Libo Du 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).

  • Publication number: 20240026154
    Abstract: A nylon composition comprising a blend, wherein the blend includes: (a) at least one polyamide; and (b) at least one modifier, wherein the modifier includes a substantially linear functionalized ethylene/alpha-olefin copolymer having at least one side chain furan moiety crosslinked with at least one maleimide structure; a process for making the composition; and an article made from the composition.
    Type: Application
    Filed: February 1, 2021
    Publication date: January 25, 2024
    Applicant: Dow Global Technologies LLC
    Inventors: Xilun Weng, Hongyu Chen, Ming Ming, Yonghua Gong, Wuye Ouyang, Libo Du, Shijie Ren
  • Publication number: 20220169841
    Abstract: Polymer compositions include an interpolymer of ethylene, an ?-olefin, and a nonconjugated polyene; and from 10% to 40% by weight oil. The polymer composition has a Mooney viscosity from 20 to 70. The interpolymer may include from 66% to 75% by weight monomer units derived from ethylene; and from 0.5% to 10% by weight monomer units derived from the nonconjugated polyene. The neat interpolymer may have: a weight-average molecular weight Mw from 250 kDa to 300 kDa; a Mooney viscosity from 50 to 200; a rheology ratio V0.1/V100 less than 30; a ratio of molecular weight to low-shear viscosity Mw/V0.1 greater than 4.0; a polydispersity index from 2.0 to 3.5; and a tan ? at 0.1 rad/sand 190° C. greater than 2.0. The polymer compositions may be in the form of pellets having desirable flow characteristics. Thermoplastic vulcanizates may include the polymer compositions. Articles may include the thermoplastic vulcanizates.
    Type: Application
    Filed: March 29, 2019
    Publication date: June 2, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Xiaosong Wu, Colin Lipishan, Tao Han, Libo Du
  • Patent number: 11319419
    Abstract: A multilayer film (10) having excellent mechanical strength and transparency comprise a core layer (12), at least two skin layers, and at least two sub-skin layers disposed between the core layer (12) and the two skin layers. The core layer (12) comprises at least 60 wt. % linear low density polyethylene (LLDPE). The sub-skin layers comprise at least 60 wt. % low density polyethylene (LDPE). The skin layers comprise at least 80 wt. % of LLDPE wherein the LLDPE comprises C6 LLDPE, C8 LLDPE, or combinations thereof, and each skin layer has a thickness of less than 25% of the overall thickness of the multilayer film (10). The multilayer film (10) comprises at least 0.1 wt. % ultraviolet stabilizer.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: May 3, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Yong Chen, Xiaobing Yun, Libo Du
  • Publication number: 20200165396
    Abstract: A multilayer film (10) having excellent mechanical strength and transparency comprise a core layer (12), at least two skin layers, and at least two sub-skin layers disposed between the core layer (12) and the two skin layers. The core layer (12) comprises at least 60 wt. % linear low density polyethylene (LLDPE). The sub-skin layers comprise at least 60 wt. % low density polyethylene (LDPE). The skin layers comprise at least 80 wt. % of LLDPE wherein the LLDPE comprises C6 LLDPE, C8 LLDPE, or combinations thereof, and each skin layer has a thickness of less than 25% of the overall thickness of the multilayer film (10). The multilayer film (10) comprises at least 0.1 wt. % ultraviolet stabilizer.
    Type: Application
    Filed: May 11, 2017
    Publication date: May 28, 2020
    Inventors: Yong Chen, Xiaobing Yun, Libo Du
  • Publication number: 20200140665
    Abstract: A masterbatch formulation comprising from 40 to 82.5 wt. % of a polyolefin resin; from 0.5 to 10 wt. % of a hydrophilic fumed silica, wherein the hydrophilic fumed silica has a specific surface area of 30 m2/g to 750 m2/g; and greater than or equal to 17 wt. % of an anti-dripping agent.
    Type: Application
    Filed: June 28, 2017
    Publication date: May 7, 2020
    Inventors: Libo Du, Andong Liu, Yong Chen, Hongyu Chen
  • Patent number: 10603877
    Abstract: A multi-layer film comprising: a) a first layer comprising i) a polyolefin component; and ii) a polyethylene oxide/polyethylene copolymer having a Hydrophile-Lipophile Balance value in the range of from 2 to 6; b) a second layer comprising i) a polyolefin component; ii) from 1 to 5 weight percent of an additive selected from the group consisting of sorbitan esters, polyoxyethylene esters, glycerol esters, polyglycerol esters, fluorine-based compounds and combinations thereof, wherein the additive has a Hydrophile-Lipophile Balance value in the range of from 7 to 18; and iii) an inorganic filler; wherein the second layer is adjacent to the first layer and c) a skin layer comprising a polyolefin component, is disclosed. The multi-layer film is used in greenhouse applications.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: March 31, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Qing Shi, Hongyu Chen, Daojin Hang, Libo Du, Andong Liu, Yong Chen
  • Patent number: 10561073
    Abstract: Embodiments of films, for example, infrared absorbing, heat retaining films, comprise at least one polymer selected from: a low density polyethylene (LDPE) having a density range of 0.900 g/cc to 0.930 g/cc and a melt index (I2) of 0.3 g/10 min to 2.0 g/10 min as measured in accordance with ASTM D1238; a linear low density polyethylene (LLDPE) having a density range of 0.900 g/cc to 0.930 g/cc and a melt index I2 of 0.3 g/10 min to 2.0 g/10 min; and a ethylene vinyl acetate copolymer having a vinyl acetate content ranging from 3 wt. % to 27 wt. % and a melt index I2 of 0.2 g/10 min to 10 g/10 min. The films also comprise a hybrid filler comprising (i) a layered double hydroxide, and (ii) an inorganic powder complex having a particle size distribution defined by a median diameter (D50) of 1.5 to 20 ?m.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: February 18, 2020
    Assignee: Dow Global Technologies LLC
    Inventors: Libo Du, Hongyu Chen, Qing Shi, Yong Chen, Hong Liang Zhang, Hong Zheng, QiQi Tang
  • Publication number: 20180310490
    Abstract: Embodiments of films, for example, infrared absorbing, heat retaining films, comprise at least one polymer selected from: a low density polyethylene (LDPE) having a density range of 0.900 g/cc to 0.930 g/cc and a melt index (I2) of 0.3 g/10 min to 2.0 g/10 min as measured in accordance with ASTM D1238; a linear low density polyethylene (LLDPE) having a density range of 0.900 g/cc to 0.930 g/cc and a melt index I2 of 0.3 g/10 min to 2.0 g/10 min; and a ethylene vinyl acetate copolymer having a vinyl acetate content ranging from 3 wt. % to 27 wt. % and a melt index I2 of 0.2 g/10 min to 10 g/10 min. The films also comprise a hybrid filler comprising (i) a layered double hydroxide, and (ii) an inorganic powder complex having a particle size distribution defined by a median diameter (D50) of 1.5 to 20 ?m.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 1, 2018
    Applicant: Dow Global Technologies LLC
    Inventors: Libo Du, Hongyu Chen, Qing Shi, Yong Chen, Hong Liang Zhang, Hong Zheng, QiQi Tang
  • Publication number: 20180244021
    Abstract: A multi-layer film comprising: a) a first layer comprising i) a polyolefin component; and ii) a polyethylene oxide/polyethylene copolymer having a Hydrophile-Lipophile Balance value in the range of from 2 to 6; b) a second layer comprising i) a polyolefin component; ii) from 1 to 5 weight percent of an additive selected from the group consisting of sorbitan esters, polyoxyethylene esters, glycerol esters, polyglycerol esters, fluorine-based compounds and combinations thereof, wherein the additive has a Hydrophile-Lipophile Balance value in the range of from 7 to 18; and iii) an inorganic filler; wherein the second layer is adjacent to the first layer and c) a skin layer comprising a polyolefin component, is disclosed. The multi-layer film is used in greenhouse applications.
    Type: Application
    Filed: September 18, 2015
    Publication date: August 30, 2018
    Inventors: Qing Shi, Hongyu Chen, Daojin Hang, Libo Du, Andong Liu, Yong Chen
  • Publication number: 20160134231
    Abstract: Photovoltaic or solar module frames, racks, or frame or rack components are made from a composition comprising (A) a thermoplastic polymer, particularly a thermoplastic polyolefin, (B) a reinforcing element, particularly glass fiber, (C) a non-halogen containing, intumescent flame retardant, (D) an impact-modifier, particularly a polyolefin elastomer, (E) a coupling agent, and, optionally, (F) one or more additives such as an antioxidant, UV-stabilizer, etc. These frames provide for easy assembly without the need for screws, bolts or other metal fasteners.
    Type: Application
    Filed: June 28, 2013
    Publication date: May 12, 2016
    Inventors: Shaofu Wu, YanLi Huo, Yongjin Guo, Wenbin Yao, Zhiqing Lin, Jie Cai, Bin Chen, Yudong Qi, Libo Du, Hongyu Chen