Patents by Inventor Longlan Cui

Longlan Cui 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).

  • COPOLYMER ADDITIVE
    Publication number: 20250059309
    Abstract: A copolymer additive comprising water and a copolymer prepared from an acetoacetamide functional monomer and a ureido monomer is stable in a wide range of pH values and a coating composition comprising such copolymer additive can provide coating films made therefrom with good formaldehyde abatement performance and good resistance to yellowing.
    Type: Application
    Filed: January 25, 2021
    Publication date: February 20, 2025
    Inventors: Longlan Cui, Shaoguang Feng, Rui Wang, Jieying Chen, James C. Bohling, Alvin M. Maurice, Chen Chen, Xiuqing Xu
  • AQUEOUS COATING COMPOSITION
    Publication number: 20250059380
    Abstract: An aqueous coating composition contains: (A) a polyacid polymer containing a phosphonate and/or phosphinate functional group, wherein the polyacid polymer has a weight average molecular weight of 2000 to 25000 g/mol and comprises, by weight based on the weight of the polyacid polymer, from 20% to 100% of structural units of an acid monomer, a salt thereof, or mixtures thereof; and from zero to 80% of structural units of an ethylenically unsaturated nonionic monomer; (B) an emulsion polymer comprising, by weight based on the weight of the emulsion polymer, from 0.3% to 2.5% of structural units of an ethylenically unsaturated phosphorous-containing acid monomer, a salt thereof, or mixtures thereof; from zero to 10% of structural units of an additional acid monomer, a salt thereof, or mixtures thereof; and structural units of an ethylenically unsaturated nonionic monomer; (C) from 0.005% to 0.
    Type: Application
    Filed: December 24, 2021
    Publication date: February 20, 2025
    Inventors: Weijun Yang, Longlan Cui
  • Dispersant and waterborne epoxy coating composition
    Patent number: 12146074
    Abstract: A polymeric dispersant and a stable two-component epoxy coating composition comprising an epoxy component A comprising: a waterborne epoxy resin, the polymeric dispersant, and pigments and/or extenders; and a component B comprising a curing agent; providing coatings made therefrom with improved anti-corrosion properties; and a method of preparing the coating composition.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: November 19, 2024
    Assignee: Dow Global Technologies LLC
    Inventors: Weijun Yang, Hu Li, Longlan Cui
  • Aqueous thickener blend composition
    Patent number: 11505691
    Abstract: An aqueous thickener blend composition comprising an aqueous hydrophobically-modified alkali soluble or alkali swellable thickener composition and an acid-suppressible associative thickener composition, affording high thickening efficiency and providing an aqueous coating composition comprising such aqueous thickener blend composition with good heat-age stability and color float stability.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: November 22, 2022
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Longlan Cui, Rui Wang, Ling Li, Wei Gao
  • Low sheen paint composition with effective opacity
    Patent number: 11498992
    Abstract: The present invention provides an aqueous paint composition comprising by dry weight based on total dry weight of the pigment composition, from 11% to 35% of a polymeric duller of (co)polymeric particles having an average diameter of from 1 to 20 ?m, and from 25% to 70% of titanium dioxide particles; wherein from 50% to 100% of the titanium dioxide particles are encapsulated by polymer shell of (co)polymeric particles.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: November 15, 2022
    Assignees: Dow Global Technologies LLC, Rohm and Has Company
    Inventors: Junyu Chen, Wei Cui, Tao Wang, Tao Wang, Qianqian Li, Juan Li, Longlan Cui, David G. Speece, Jr.
  • Aqueous dispersion of multistage polymer
    Patent number: 11499043
    Abstract: An aqueous dispersion of a hydrophobically-modified alkali-soluble multistage polymer useful as a thickener affording high thickening efficiency and an aqueous coating composition comprising such aqueous dispersion showing good stability after heat aging without compromising stability upon addition of colorants.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: November 15, 2022
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Longlan Cui, Rui Wang, Siyuan Jiang, Wei Gao
  • Aqueous coating composition
    Patent number: 11225587
    Abstract: The present invention provides an aqueous coating composition that provides coatings with improved hydrophilic stain repellency.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: January 18, 2022
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Longlan Cui, Junyu Chen, Tao Wang
  • Waterborne epoxy coating composition
    Patent number: 11186743
    Abstract: A stable two-component waterborne coating composition comprising an epoxy component A comprising a waterborne epoxy resin, a polymeric dispersant, and pigments and/or extenders; and a component B comprising a curing agent; providing coatings made therefrom with improved anti-corrosion properties; and a method of preparing the coating composition.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: November 30, 2021
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Weijun Yang, Hu Li, Longlan Cui, Siyuan Jiang, Tao Wang, Yu Cai, Jia Tang, Antony K. Van Dyk
  • DISPERSANT AND WATERBORNE EPOXY COATING COMPOSITION
    Publication number: 20210363363
    Abstract: A polymeric dispersant and a stable two-component epoxy coating composition comprising an epoxy component A comprising: a waterborne epoxy resin, the polymeric dispersant, and pigments and/or extenders; and a component B comprising a curing agent; providing coatings made therefrom with improved anti-corrosion properties; and a method of preparing the coating composition.
    Type: Application
    Filed: December 3, 2018
    Publication date: November 25, 2021
    Inventors: Weijun Yang, Hu Li, Longlan Cui
  • WATERBORNE EPOXY COATING COMPOSITION
    Publication number: 20210284863
    Abstract: A stable two-component waterborne coating composition comprising an epoxy component A comprising a waterborne epoxy resin, a polymeric dispersant, and pigments and/or extenders; and a component B comprising a curing agent; providing coatings made therefrom with improved anti-corrosion properties; and a method of preparing the coating composition.
    Type: Application
    Filed: June 2, 2017
    Publication date: September 16, 2021
    Inventors: Weijun Yang, Hu Li, Longlan Cui, Siyuan Jiang, Tao Wang, Yu Cai, Jia Tang, Antony K. Van Dyk
  • AQUEOUS THICKENER BLEND COMPOSITION
    Publication number: 20210171787
    Abstract: An aqueous thickener blend composition comprising an aqueous hydrophobically-modified alkali soluble or alkali swellable thickener composition and an acid-suppressible associative thickener composition, affording high thickening efficiency and providing an aqueous coating composition comprising such aqueous thickener blend composition with good heat-age stability and color float stability.
    Type: Application
    Filed: December 14, 2018
    Publication date: June 10, 2021
    Inventors: Longlan Cui, Rui Wang, Ling Li, Wei Gao
  • AQUEOUS DISPERSION OF MULTISTAGE POLYMER
    Publication number: 20200354559
    Abstract: An aqueous dispersion of a hydrophobically-modified alkali-soluble multistage polymer useful as a thickener affording high thickening efficiency and an aqueous coating composition comprising such aqueous dispersion showing good stability after heat aging without compromising stability upon addition of colorants.
    Type: Application
    Filed: December 25, 2017
    Publication date: November 12, 2020
    Inventors: Longlan Cui, Rui Wang, Siyuan Jiang, Wei Gao
  • AQUEOUS COATING COMPOSITION
    Publication number: 20190315997
    Abstract: The present invention provides an aqueous coating composition that provides coatings with improved hydrophilic stain repellency.
    Type: Application
    Filed: December 19, 2016
    Publication date: October 17, 2019
    Inventors: Longlan Cui, Junyu Chen, Tao Wang
  • Multi-stage latex polymers, process of making the same, and coating compositions made thereof
    Patent number: 10227500
    Abstract: A latex polymer of multi-stage polymerization comprising a first stage polymer and a second stage polymer wherein the first stage polymer comprises a first portion of an acrylic monomer and a first portion of a phosphorus acid monomer, and the second stage polymer comprises a second portion of an acrylic monomer and a second portion of a phosphorus acid monomer. A process of making such latex polymer.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: March 12, 2019
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Wei Cui, Tao Wang, Longlan Cui, James C. Bohling
  • ANTIMICROBIAL COATING COMPOSITION WITH IMPROVED YELLOWING RESISTANCE
    Publication number: 20180215931
    Abstract: The present invention provides an antimicrobial coating composition comprising (i) a binder dispersion of (co)polymer particles and (ii) from 50 ppm to 2000 ppm, by dry weight based on total dry weight of the coating composition, a silver; wherein the binder dispersion comprises, as polymerized units, by dry weight based on total dry weight of the binder dispersion, (a) from 40% to 99.9% ethylenically unsaturated nonionic monomers and (b) from 0.1% to 60% phosphate group-containing (meth)acrylate monomers.
    Type: Application
    Filed: August 13, 2015
    Publication date: August 2, 2018
    Inventors: Junyu Chen, Tao Wang, Longlan Cui, Tao Wang
  • A LOW SHEEN PAINT COMPOSITION WITH EFFECTIVE OPACITY
    Publication number: 20180072911
    Abstract: The present invention provides an aqueous paint composition comprising by dry weight based on total dry weight of the pigment composition, from 11% to 35% of a polymeric duller of (co)polymeric particles having an average diameter of from 1 to 20 ?m, and from 25% to 70% of titanium dioxide particles; wherein from 50% to 100% of the titanium dioxide particles are encapsulated by polymer shell of (co)polymeric particles.
    Type: Application
    Filed: April 28, 2015
    Publication date: March 15, 2018
    Inventors: Junyu Chen, Wei Cui, Tao Wang, Tao Wang, Qianqian Li, Juan Li, Longlan Cui, David G. Speece, Jr.
  • Aqueous coating composition with improved viscosity stability
    Patent number: 9816002
    Abstract: This invention relates to a coating composition, especially, relates to an aqueous coating composition with improved viscosity stability.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: November 14, 2017
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Tao Wang, Juan Li, Junyu Chen, Longlan Cui
  • MULTI-STAGE LATEX POLYMERS, PROCESS OF MAKING THE SAME, AND COATING COMPOSITIONS MADE THEREOF
    Publication number: 20170096575
    Abstract: A latex polymer of multi-stage polymerization comprising a first stage polymer and a second stage polymer wherein the first stage polymer comprises a first portion of an acrylic monomer and a first portion of a phosphorus acid monomer, and the second stage polymer comprises a second portion of an acrylic monomer and a second portion of a phosphorus acid monomer. A process of making such latex polymer.
    Type: Application
    Filed: June 20, 2014
    Publication date: April 6, 2017
    Inventors: Wei Cui, Tao Wang, Longlan Cui, James C. Bohling
  • AQUEOUS COATING COMPOSITION WITH IMPROVED DURABILITY
    Publication number: 20160168414
    Abstract: This invention relates to a coating composition and, especially, relates to an aqueous coating composition with improved durability.
    Type: Application
    Filed: July 31, 2013
    Publication date: June 16, 2016
    Inventors: Juan LI, Tao Wang, Tao Wang, Junyu Chen, Longlan Cui, Wei Cui, David G. Speece
  • Aqueous coating composition with improved stability
    Patent number: 9303182
    Abstract: This invention relates to a coating composition, especially, relates to an aqueous coating composition with improved stability.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: April 5, 2016
    Assignees: Dow Global Technologies LLC, Rohm and Haas Company
    Inventors: Tao Wang, Junyu Chen, Tao Wang, Yujiang Wang, Longlan Cui