Patents by Inventor Zhenguo Liu

Zhenguo 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).

  • Publication number: 20200369883
    Abstract: Described herein is a thermoplastic polyamide composition comprising long chain polyamide of 25-65 wt %, modified poly (arylene ether) resin of 5-20 wt %, and D-glass fibers of 30-65 wt %. Also described herein is a manufacturing process of the thermoplastic polyamide composition and a method of using the thermoplastic polyamide composition in high frequency communication products. The thermoplastic polyamide composition expresses very good dielectric property and good mechanical properties useful in high frequency communication technology.
    Type: Application
    Filed: November 21, 2018
    Publication date: November 26, 2020
    Inventors: Lin Chen, Zhenguo Liu
  • Patent number: 10814314
    Abstract: The present invention relates to a catalyst for aminating a polyether polyol and preparation method thereof and a method of preparing a polyetheramine using the catalyst. The catalyst has active components and a carrier. The active components are Ni, Cu, and Pd. The method of preparing the catalyst comprises the following steps: using a metal solution or a metal melt impregnated carrier, obtaining a catalyst precursor; and drying and calcinating the obtained catalyst precursor, so as to obtain a catalyst. By introducing the active component Pd in the catalyst, the present invention clearly improves selectivity of an amination catalyst with respect to a preaminated product, and increases raw material conversion rate.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: October 27, 2020
    Assignee: Wanhua Chemical Group Co., Ltd.
    Inventors: Congying Zhang, Shujie Ren, Xin Li, Zhenguo Liu, Xiaolong Wang, Ningning Wang, Hao Chen, Yuan Li, Xueli Yu, Jinhong Song
  • Patent number: 10703900
    Abstract: The present invention relates to a polyester composition comprising: (A) 15 to 99 wt % of polyester blend of two or more polyesters based on the total weight of the polyester composition, (B) 0.05 to 5 wt % of a transesterification accelerator based on the total weight of the polyester composition, wherein the transesterification accelerator comprises alkali metal carbonate salt, alkali earth metal carbonate salt, alkali metal bicarbonate salt, alkali earth metal bicarbonate salt and combination thereof, (C) optionally a reinforcing filler, and (D) optionally further an additive. The present invention also relates to an article prepared from the polyester composition and a method of preparing the article.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: July 7, 2020
    Assignee: BASF SE
    Inventors: Zhenguo Liu, Siqi Xue, Ting Liu, Eason Sun
  • Publication number: 20190243055
    Abstract: Disclosed is an edge-lit backlight module, including: a mono-color backlight source; a light guide panel (LGP); a light entrance surface of the LGP opposite to the mono-color backlight source and configured to receive light emitted from the mono-color backlight source; a quantum dot (QD) film disposed on a light emergent surface of the LGP; and a reflective sheet disposed on a bottom surface of the LGP opposite to the light emergent surface, where diffusion dots and fluorescence excitation dots are disposed on the bottom surface; where the diffusion dots are disposed in a center region of the bottom surface and configure to receive the light emitted from the mono-color backlight source and generate a diffusion light having a same color with the light emitted from the mono-color backlight source, and the fluorescence excitation dots are disposed in an edge region of the bottom surface.
    Type: Application
    Filed: March 20, 2019
    Publication date: August 8, 2019
    Applicant: Qingdao Hisense Electronics Co., Ltd.
    Inventors: Fulin Li, Zhicheng Song, Zhenguo Liu
  • Publication number: 20190201878
    Abstract: A supported catalyst used for synthesizing a polyether amine, and a manufacturing method of the catalyst. The catalyst comprises: a porous oxide as a support; Ni, Cu, Pd, and Rh as active components; and one or more of any of Zr, Cr, Mo, Fe, Zn, Sn, Bi, Ce, La, Hf, Sr, Sb, Mg, Be, Re, Ta, Ti, Sc, Ge and related metals as an auxiliary agent. The catalyst can be used in an amination reaction for a large molecular weight polyether polyol, and is particularly active and selective for an amination reaction of a low molecular weight polyether polyol. The catalyst has a simple and economic manufacturing technique and good potential for future applications.
    Type: Application
    Filed: August 24, 2016
    Publication date: July 4, 2019
    Applicant: Wanhua Chemical Group Co., Ltd.
    Inventors: Shujie Ren, Congying Zhang, Xin Li, Zhenguo Liu, Xiaolong Wang, Lei Tang, Zhipeng Liu, Zhanyu Gao, Jian Wu, Cong Wang, Yuan Li, Qingmei Jiang, Jinhong Song, Weiqi Hua, Hao Ding
  • Publication number: 20180318806
    Abstract: The present invention relates to a catalyst for aminating a polyether polyol and preparation method thereof and a method of preparing a polyetheramine using the catalyst. The catalyst has active components and a carrier. The active components are Ni, Cu, and Pd. The method of preparing the catalyst comprises the following steps: using a metal solution or a metal melt impregnated carrier, obtaining a catalyst precursor; and drying and calcinating the obtained catalyst precursor, so as to obtain a catalyst. By introducing the active component Pd in the catalyst, the present invention clearly improves selectivity of an amination catalyst with respect to a preaminated product, and increases raw material conversion rate.
    Type: Application
    Filed: November 13, 2015
    Publication date: November 8, 2018
    Applicant: Wanhua Chemical Group Co., Ltd.
    Inventors: Congying Zhang, Shujie Ren, Xin Li, Zhenguo Liu, Xiaolong Wang, Ningning Wang, Hao Chen, Yuan Li, Xueli Yu, Jinhong Song
  • Publication number: 20180284534
    Abstract: A quantum dot color filter, a liquid crystal panel and a liquid crystal display device, belonging to the field of liquid crystal display, are disclosed, where the quantum dot color filter comprising a quantum dot light conversion layer; a base panel arranged on a light incident side of the quantum dot conversion layer; and a protection layer arranged on a light emitting side of the quantum dot conversion layer, wherein a micro-lens array is arranged between the quantum dot conversion layer and the protection layer, the micro-lens array is configured to condense the light emitted from the quantum dot conversion layer. By utilizing the light convergence capability of the micro-lens array, the light emitted by the pixels in the quantum dot color filter is converged to a range of angle-of-view, thereby increasing the brightness within the range of angle-of-view, and improving the display effect of the liquid crystal display device.
    Type: Application
    Filed: December 28, 2017
    Publication date: October 4, 2018
    Inventors: ZHICHENG SONG, ZHENGUO LIU, WEIDONG LIU, FULIN LI
  • Publication number: 20180179376
    Abstract: The present invention relates to a polyester composition comprising: (A) 15 to 99 wt % of polyester blend of two or more polyesters based on the total weight of the polyester composition, (B) 0.05 to 5 wt % of a transesterification accelerator based on the total weight of the polyester composition, wherein the transesterification accelerator comprises alkali metal carbonate salt, alkali earth metal carbonate salt, alkali metal bicarbonate salt, alkali earth metal bicarbonate salt and combination thereof, (C) optionally a reinforcing filler, and (D) optionally further an additive. The present invention also relates to an article prepared from the polyester composition and a method of preparing the article.
    Type: Application
    Filed: June 28, 2016
    Publication date: June 28, 2018
    Inventors: Zhenguo LIU, Siqi XUE, Ting LIU, Eason SUN
  • Publication number: 20180075625
    Abstract: The present application provides an LED package structure, a display apparatus, and a method for color display. The LED package structure of the present application includes: at least one graphene LED chip, a white-light LED structure, an LED package holder provided with an optical cup; where the at least one graphene LED chip and the white-light LED structure are packaged in the optical cup, and a plurality of adjustable wavelength points of the at least one graphene LED chip together with a white light point of the white-light LED structure form a gamut display range. The present application can improve the gamut display range of the display apparatus.
    Type: Application
    Filed: December 29, 2016
    Publication date: March 15, 2018
    Inventors: FULIN LI, ZHENGUO LIU
  • Patent number: 9580380
    Abstract: Disclosed is a method for preparing diamino-dicyclohexyl methane (H12MDA) by hydrogenation of diamino-diphenyl methane (MDA). In the process, 4,4?-MDA used as the starting material is firstly hydrogenated to prepare 4,4?-H12MDA. When the activity of the catalyst is reduced, the feed is switched from 4,4?-MDA to the mixture of 2,4?-MDA and 4,4?-MDA, and then when the conversion is stabilized, the feed is switched to 4,4?-MDA again. The deactivated catalyst is activated on line by switching the feed to the mixture of 2,4?-MDA and 4,4?-MDA. 4,4?-H12MDA having the trans-trans isomer content of 16˜24 wt % is produced, and the mixture of 2,4?-H12MDA and 4,4?-H12MDA is also produced, wherein the content of 2,4?-H12MDA in the mixture is 4˜15 wt %.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: February 28, 2017
    Assignee: Wanhua Chemical Group Co., Ltd.
    Inventors: Xin Li, Hao Chen, Congying Zhang, Shan Gao, Zhenguo Liu, Weijia Wang, Lei Tang, Zhipeng Liu, Yuan Li, Qingmei Jiang, Jinhong Song, Weiqi Hua, Hao Ding
  • Patent number: 9546266
    Abstract: A polyamide composition comprises a polyamide, an anhydride-functional copolymer reactive with the polyamide, and a poly (ethylene-co-methacrylic acid) ionomer. A pneumatic tire assembly includes an inner liner which is formed from the polyamide composition. The inner liner comprises the reaction product of the polyamide and the anhydride-functional copolymer, as well as the (ethylene-co-methacrylic acid) ionomer.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: January 17, 2017
    Assignee: BASF SE
    Inventors: Stephen Hanley, Zhenguo Liu
  • Patent number: 9382028
    Abstract: The present invention describes both a stretch-blow-molded opaque polyester container and a method of making it. The container, typically a beverage bottle has less than 15% transmission of visible light (500 nm) through a 0.4 millimeter wall thickness. It contains from about 0.1 to about 5 wt. % of said opacifying material. The opacifying material may be any material compatible with polyester resin. The method of making the container includes introducing the opacifying material during polymerization, or prepared as a master batch for mixing with the polymer. Selection of certain opacifying materials can also result in favorable reheat properties, gas permeation-barrier improvements, and when the resin contains both opacifying material and oxygen scavenger there can be a synergistic effect with respect to CO2 permeation.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: July 5, 2016
    Assignee: Invista North America S.A.R.L.
    Inventors: Geoffrey R. Scantlebury, Zhenguo Liu, Xiaoyan Huang
  • Publication number: 20160068472
    Abstract: Disclosed is a method for preparing diamino-dicyclohexyl methane (H12MDA) by hydrogenation of diamino-diphenyl methane (MDA). In the process, 4,4?-MDA used as the starting material is firstly hydrogenated to prepare 4,4?-H12MDA. When the activity of the catalyst is reduced, the feed is switched from 4,4?-MDA to the mixture of 2,4?-MDA and 4,4?-MDA, and then when the conversion is stabilized, the feed is switched to 4,4?-MDA again. The deactivated catalyst is activated on line by switching the feed to the mixture of 2,4?-MDA and 4,4?-MDA. 4,4?-H12MDA having the trans-trans isomer content of 16˜24 wt % is produced, and the mixture of 2,4?-H12MDA and 4,4?-H12MDA is also produced, wherein the content of 2,4?-H12MDA in the mixture is 4˜15 wt %.
    Type: Application
    Filed: November 22, 2013
    Publication date: March 10, 2016
    Applicants: WANHUA CHEMICAL (NINGBO) CO., LTD., WANHUA CHEMICAL GROUP CO., LTD.
    Inventors: Xin LI, Hao CHEN, Congying ZHANG, Shan GAO, Zhenguo LIU, Weijia WANG, Lei TANG, Zhipeng LIU, Yuan LI, Qingmei JIANG, Jinhong SONG, Weiqi HUA, Hao DING
  • Publication number: 20160060452
    Abstract: A composition comprises polyalkylene terephthalate and terpolymer of alkylene diol, isophthalic acid and terephthalic acid, and polyalkylene terephthalate reinforcing fiber. The composition may be used to form an article, alone or with other thermoplastic material, at lower processing temperature, with higher melt flowability. The article formed is characterized with lower warpage and improved mechanical properties. The article may be useful for automotive, electrical, household, construction, and industrial applications. A method of preparing such thermoplastic polyester is also disclosed.
    Type: Application
    Filed: March 26, 2014
    Publication date: March 3, 2016
    Inventors: Zhenguo Liu, Dai Watanabe, Hui Wang, Simon Kniesel
  • Publication number: 20160002453
    Abstract: A polyamide composition comprises a polyamide, an anhydride-functional copolymer reactive with the polyamide, and a poly (ethylene-co-methacrylic acid) ionomer. A pneumatic tire assembly includes an inner liner which is formed from the poly-amide composition. The inner liner comprises the reaction product of the polyamide and the anhydride-functional copolymer, as well as the (ethylene-co-methacrylic acid) ionomer.
    Type: Application
    Filed: March 4, 2014
    Publication date: January 7, 2016
    Inventors: Stephen Hanley, Zhenguo Liu
  • Patent number: 8372477
    Abstract: A method of adhering a particulate material, such as a hydrocarbon adsorbent material and/or a catalytic material, to a plastic surface, and products comprising the adhered material are disclosed.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: February 12, 2013
    Assignee: BASF Corporation
    Inventors: Mark T. Buelow, Laif R. Alden, John Kauffman, John J. Steger, William McMaster, Zhenguo Liu, Raghuram Gummaraju
  • Patent number: 8092884
    Abstract: A single layer fuel tank includes a polyamide component, an impact modifier, and a binding filler. The polyamide component has a polyamide selected from the group of polyamide 6, polyamide 6/6, polyamide 6/66, and combinations thereof. The polyamide component also includes up to 5 parts by weight of polyamide oligomers per 100 parts by weight of the polyamide component. The impact modifier is an organic copolymer and is present in an amount of up to 30 parts by weight per 100 parts by weight of the fuel tank. The binding filler is not covalently bonded to the polyamide and includes at least one of a silica and a cyclodextrin. In addition, the binding filler is present in an amount of up to 10 parts by weight per 100 parts by weight of the fuel tank.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: January 10, 2012
    Assignee: BASF SE
    Inventors: Zhenguo Liu, Stephen J. Hanley, Frank Aadahl
  • Patent number: 7943216
    Abstract: The present invention comprises a blend of polyester and a partially aromatic polyamide with an ionic compatibilizer and a cobalt salt. This blend can be processed into a container that has both active and passive oxygen barrier and carbon dioxide barrier properties at an improved color and clarity than containers known in the art. The partially aromatic polyamide is preferably meta-xylylene adipamide. The ionic compatibilizer is preferably 5-sodiumsulfoisophthalic acid or 5-zincsulfoisophthalic acid, or their dialkyl esters such as the dimethyl ester (SIM) and glycol ester (SIPEG). The cobalt salt is selected form the class of cobalt acetate, cobalt carbonate, cobalt chloride, cobalt hydroxide, cobalt naphthenate, cobalt oleate, cobalt linoleate, cobalt octoate, cobalt stearate, cobalt nitrate, cobalt phosphate, cobalt sulfate, cobalt (ethylene glycolate), or mixtures of two or more of these. The partially aromatic polyamide is present in a range from about 1 to about 10 wt. % of said composition.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: May 17, 2011
    Assignee: INVISTA North Americal S.ar.l.
    Inventors: Zhenguo Liu, Sanja Mehta, Xiaoyan Huang, David A Schiraldi
  • Patent number: 7919159
    Abstract: The present invention comprises a blend of polyester and a partially aromatic polyamide with an ionic compatibilizer and a cobalt salt. This blend can be processed into a container that has both active and passive oxygen barrier and carbon dioxide barrier properties at an improved color and clarity than containers known in the art. The partially aromatic polyamide is preferably meta-xylylene adipamide. The ionic compatibilizer is preferably 5-sodiumsulfoisophthalic acid or 5-zincsulfoisophthalic acid, or their dialkyl esters such as the dimethyl ester (SIM) and glycol ester (SIPEG). The cobalt salt is selected form the class of cobalt acetate, cobalt carbonate, cobalt chloride, cobalt hydroxide, cobalt naphthenate, cobalt oleate, cobalt linoleate, cobalt octoate, cobalt stearate, cobalt nitrate, cobalt phosphate, cobalt sulfate, cobalt (ethylene glycolate), or mixtures of two or more of these. The partially aromatic polyamide is present in a range from about 1 to about 10 wt. % of said composition.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: April 5, 2011
    Assignee: INVISTA North America S.ar.l.
    Inventors: Zhenguo Liu, Sanjay Mehta, Xiaoyan Huang, David A. Schiraldi
  • Patent number: 7879930
    Abstract: The present invention relates to a melt blend of a base polymer, an oxidizable organic polymer, a transition metal salt catalyst and a colorant that does not completely deactivate the catalyzed oxidation. A preferred colorant, yields in an article made from the polymer melt blend a Catalyst Deactivation Factor (CDF) of less than about 0.25, preferably less than 0.15, more preferably less than 0.1, and most preferred less than 0.05. The present invention also comprises a colored monolayer article having the described CDF, such as a film, thermoformed tray, or blow molded container, that has active oxygen scavenging properties. The colorant, after melt blending a base polymer, an oxidizable organic polymer, a transition metal catalyst, does not increase the binding energy of the transition metal catalyst ion by more than 1 eV.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: February 1, 2011
    Assignee: INVISTA North America S.a r.l.
    Inventor: Zhenguo Liu