Patents by Inventor Pu Luo

Pu Luo 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: 20250109228
    Abstract: A one-step process for preparing a silicone impact modifier comprises polymerizing a reaction mixture, where the reaction mixture comprises a telechelic methacrylate functional silicone and at least one alkyl (meth)acrylate.
    Type: Application
    Filed: December 15, 2022
    Publication date: April 3, 2025
    Inventors: Pu Luo, Morris Wills
  • Publication number: 20250011596
    Abstract: Provided are multistage polymer compositions comprising (a) a core comprising a silicone polymer, and (b) a shell comprising a silicone polymer. At least one of the silicone polymer in the core and the acrylic polymer in the shell comprise polymerized units derived from an organo-phosphorus monomer. Also provided are matrix resin compositions comprising such polymer compositions and a matrix resin.
    Type: Application
    Filed: December 7, 2022
    Publication date: January 9, 2025
    Inventors: Pu Luo, Morris Wills
  • Publication number: 20250011586
    Abstract: Provided are multistage polymer compositions comprising (a) an initial stage polymer, and (b) a latter stage polymer, wherein latter stage polymer comprises polymerized units derived from at least one alkyl (meth)acrylate monomer, a styrene monomer, and at least one organo-phosphorus monomer. The at least one organo-phosphorus monomer is in the acid form as a salt of the phosphorus acid group. The weight ratio of the at least one alkyl (meth)acrylate monomer to styrene monomer in the latter stage polymer ranges from 50:50 to 90:10. Also provided are matrix resin compositions comprising such polymer compositions and a matrix resin, and a method for making the multistage polymer compositions.
    Type: Application
    Filed: December 7, 2022
    Publication date: January 9, 2025
    Inventors: Pu Luo, Morris Wills, William Rohrbach, Mark A. Kesselmayer
  • Publication number: 20240309126
    Abstract: Provided are a process for making a polymer composition comprising (i) providing a multistage polymer latex by emulsion polymerization in the presence of at least one organo-phosphorus soap, wherein providing the multistage polymer comprises (a) providing a first stage polymer, wherein the first stage polymer comprises polymerized units derived from at least one organo-phosphorus monomers, and (b) providing a final stage polymer, and (ii) isolating the multistage polymer by spray drying or coagulation with one or more divalent cations. Also provided is a process for making a matrix resin composition comprising mixing multistage polymer compositions and a matrix resin.
    Type: Application
    Filed: March 2, 2022
    Publication date: September 19, 2024
    Inventors: William Rohrbach, Pu Luo, Mark A. Kesselmayer
  • Patent number: 11981804
    Abstract: Provided is a polymeric composition comprising a continuous phase that comprises a matrix polymer and a dispersed phase comprising polymer particles, wherein the polymer particles comprise: (a) 30% to 85% by weight, based on the dry weight of the polymer particles, a core polymer having Tg of ?35° C. or lower; (b) 15% to 50% by weight, based on the dry weight of the polymer particles, an intermediate polymer having Tg that is 20° C. or lower and that is higher than the Tg of the core polymer by 10° C. or more; and (c) 5% to 30% by weight, based on the dry weight of the polymer particles, a shell polymer having Tg of 50° C. or higher; wherein the shell polymer comprises polymerized units of all vinyl aromatic monomers in an amount of 1% or less, by weight based on the weight of the shell polymer. Also provided is a method of making the composition.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: May 14, 2024
    Assignee: Rohm and Haas Company
    Inventors: Hailan Guo, Pu Luo, Morris Wills
  • Publication number: 20240124637
    Abstract: Provided are polymer compositions comprising (i) one or more multistage polymers comprising (a) a first stage polymer, wherein the first stage polymer comprises polymerized units derived from at least one organo-phosphorus monomers, and (b) a final stage polymer, and (ii) at least one organo-phosphorus soap in an amount of 50 ppm or more, based on the dry weight of the multistage polymer. Also provided are matrix resin compositions comprising such polymer compositions and a matrix resin.
    Type: Application
    Filed: March 1, 2022
    Publication date: April 18, 2024
    Inventors: William Rohrbach, Pu Luo, Mark A. Kesselmayer
  • Publication number: 20240076486
    Abstract: Disclosed is an impact modified resin comprises a matrix polymer resin and an impact modifier. The impact modifier comprises particles of a crosslinked polyolefin elastomer having one or more (meth)acrylic monomers grafted to the crosslinked polyolefin elastomer particles. The matrix polymer resin is a styrenic polymer.
    Type: Application
    Filed: October 14, 2020
    Publication date: March 7, 2024
    Inventors: Carlos Alfonso Cruz, Liang Chen, Steven C. Brown, Pu Luo
  • Patent number: 11845998
    Abstract: The present invention relates to a composition comprising an aqueous dispersion of submicron-sized polymer particles and micron-sized polymer beads, wherein the polymer particles or beads or both are functionalized with phosphorus acid groups. The composition of the present invention is useful for providing a matte finish on substrates, such as leather, textiles, wallboard, decorative coatings, concrete, and wood, with improved stain resistance. The present invention also relates to a leather substrate coated with a clear matte finish comprising an acrylic or styrene-acrylic polymer film and micron-sized polymer beads, wherein the film or the beads or both are functionalized with a phosphorus acid monomer.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: December 19, 2023
    Assignee: Rohm and Haas Company
    Inventors: Joy A. Gallagher, Philip R. Harsh, Pu Luo, Edwin Nungesser
  • Publication number: 20230399502
    Abstract: A composition for dispersing multilayer polymers has an oligomer prepared from at least one alkyl (meth)acrylate monomer in the presence of a chain transfer agent. The oligomer has a number average molecular weight of less than 2,500 g/mol. A composition containing the oligomer and a multilayer polymer, such as an acrylic core-shell polymer or methacrylate butadiene styrene core-shell polymer, and a resin composition are also disclosed.
    Type: Application
    Filed: November 15, 2021
    Publication date: December 14, 2023
    Inventors: Pu Luo, Morris Wills, Steven C. Brown
  • Publication number: 20230383026
    Abstract: A composition for dispersing multilayer polymers has an oligomer prepared from at least one alkyl (meth)acrylate monomer in the presence of a chain transfer agent. The oligomer has a number average molecular weight of less than 10,000 g/mol and a glass transition temperature, Tg, as measured by DSC, less than a coagulation temperature of a composition comprising the oligomer and a multilayer polymer, wherein the coagulation temperature is based on an average particle diameter of 200 microns. A composition containing the oligomer and a multilayer polymer, such as an acrylic core-shell polymer or methacrylate butadiene styrene core-shell polymer, and a resin composition are also disclosed.
    Type: Application
    Filed: November 15, 2021
    Publication date: November 30, 2023
    Inventors: Pu Luo, William Rohrbach, Morris Wills, Steven C. Brown
  • Patent number: 11814512
    Abstract: A multi-stage flexible acrylic resin comprises a branched polymer which is a reaction product of reactants comprising one or more monoethylenically unsaturated ester monomers, a chain transfer agent in an amount of 0.1 to 10 wt. %, and a crosslinker in an amount of 0.1 to 10 wt. %, wherein wt. % is based on total amount of reactants, provided the amount of crosslinker in moles is less than the amount of chain transfer agent in moles. A process for producing the multi-stage flexible acrylic resin is also disclosed.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: November 14, 2023
    Assignee: Rohm and Haas Company
    Inventors: Pu Luo, Hailan Guo, Morris Wills
  • Publication number: 20230183469
    Abstract: A composite polymer composition comprising: the emulsion polymerization product of: (i) an aqueous polyolefin dispersion comprising the melt kneading product of one or more polyolefins, from 0.5 to 25 wt % of one or more dispersion stabilizing agents and water, and (ii) one or more (meth)acrylic monomers; wherein the one or more polyolefins have a Tg equal to or less than 50° C.; wherein the melt kneading product (i) comprises polymer particles having a volume average particle size between 50 nm and 2000 nm dispersed in the water; wherein the one or more dispersion stabilizing agents comprises a fatty acid or fatty acid salt stabilizing agent; and wherein the one or more (meth)acrylic monomers graft onto the polymer particles form composite polymer particles is provide. Also provided is a method of making the composition and impact modifiers comprising the composition.
    Type: Application
    Filed: June 17, 2021
    Publication date: June 15, 2023
    Inventors: Pu Luo, Steven C. Brown, Matthew Carter, Liang Chen, Ralph C. Even, Junsi Gu, Miroslav Janco, Robert S. Moglia, Johnpeter N. Ngunjiri, Tanvi S. Ratani
  • Patent number: 11473156
    Abstract: A method for forming chrome-free retanned leather including: (a) contacting wet white (chrome-free tanned hide) with a retanning mixture comprising from 2% to 15%, by solids weight, based on the wet weight of the wet white, of an amphoteric polymer composition comprising amine functional units and acid functional units; and (b) applying a polymeric overcoat containing an acrylic copolymer with one or more metal transition elements, with a thickness of no greater than 100 microns, to the retanned wet white, is provided. The present invention also provides a chrome-free retanned leather formed by the method.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: October 18, 2022
    Assignee: Rohm and Haas Company
    Inventors: Edwin Nungesser, Andrew Hejl, Caiyun Li, Pu Luo
  • Patent number: 11441026
    Abstract: Provided is polymer particle comprising (a) 40% to 85% by weight, based on the dry weight of the polymer particle, a core polymer having Tg of ?35° C. or lower; (b) 15% to 50% by weight, based on the dry weight of the polymer particle, an intermediate polymer having Tg that is 20° C. or lower and that is higher than the Tg of the core polymer by 10° C. or more; (c) 5% to 30% by weight, based on the dry weight of the polymer particle, a shell polymer having Tg of 50° C. or higher; wherein the shell polymer comprises polymerized units of all vinyl aromatic monomers in an amount of 1% or less, by weight based on the weight of the shell polymer.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: September 13, 2022
    Assignee: Rohm and Haas Company
    Inventors: Hailan Guo, Pu Luo, Morris Wills
  • Publication number: 20220153984
    Abstract: A multi-stage flexible acrylic resin comprises a branched polymer which is a reaction product of reactants comprising one or more monoethylenically unsaturated ester monomers, a chain transfer agent in an amount of 0.1 to 10 wt. %, and a crosslinker in an amount of 0.1 to 10 wt. %, wherein wt. % is based on total amount of reactants, provided the amount of crosslinker in moles is less than the amount of chain transfer agent in moles. A process for producing the multi-stage flexible acrylic resin is also disclosed.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 19, 2022
    Inventors: Pu Luo, Hailan Guo, Morris Wills
  • Publication number: 20220127686
    Abstract: The present invention relates to a composition comprising an aqueous dispersion of submicron-sized polymer particles and micron-sized polymer beads, wherein the polymer particles or beads or both are functionalized with phosphorus acid groups. The composition of the present invention is useful for providing a matte finish on substrates, such as leather, textiles, wallboard, decorative coatings, concrete, and wood, with improved stain resistance. The present invention also relates to a leather substrate coated with a clear matte finish comprising an acrylic or styrene-acrylic polymer film and micron-sized polymer beads, wherein the film or the beads or both are functionalized with a phosphorus acid monomer.
    Type: Application
    Filed: January 11, 2022
    Publication date: April 28, 2022
    Inventors: Joy A. Gallagher, Philip R. Harsh, Pu Luo, Edwin Nungesser
  • Patent number: 11254990
    Abstract: The present invention relates to a composition comprising an aqueous dispersion of submicron-sized polymer particles and micron-sized polymer beads, wherein the polymer particles or beads or both are functionalized with phosphorus acid groups. The composition of the present invention is useful for providing a matte finish on substrates, such as leather, textiles, wallboard, decorative coatings, concrete, and wood, with improved stain resistance. The present invention also relates to a leather substrate coated with a clear matte finish comprising an acrylic or styrene-acrylic polymer film and micron-sized polymer beads, wherein the film or the beads or both are functionalized with a phosphorus acid monomer.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: February 22, 2022
    Assignee: Rohm and Haas Company
    Inventors: Joy A. Gallagher, Philip R. Harsh, Pu Luo, Edwin Nungesser
  • Publication number: 20210246293
    Abstract: Provided is a polymeric composition comprising a continuous phase that comprises a matrix polymer and a dispersed phase comprising polymer particles, wherein the polymer particles comprise: (a) 30% to 85% by weight, based on the dry weight of the polymer particles, a core polymer having Tg of ?35° C. or lower; (b) 15% to 50% by weight, based on the dry weight of the polymer particles, an intermediate polymer having Tg that is 20° C. or lower and that is higher than the Tg of the core polymer by 10° C. or more; and (c) 5% to 30% by weight, based on the dry weight of the polymer particles, a shell polymer having Tg of 50° C. or higher; wherein the shell polymer comprises polymerized units of all vinyl aromatic monomers in an amount of 1% or less, by weight based on the weight of the shell polymer. Also provided is a method of making the composition.
    Type: Application
    Filed: March 4, 2019
    Publication date: August 12, 2021
    Inventors: Hailan Guo, Pu Luo, Morris Wills
  • Publication number: 20210054183
    Abstract: Provided is polymer particle comprising (a) 40% to 85% by weight, based on the dry weight of the polymer particle, a core polymer having Tg of ?35° C. or lower; (b) 15% to 50% by weight, based on the dry weight of the polymer particle, an intermediate polymer having Tg that is 20° C. or lower and that is higher than the Tg of the core polymer by 10° C. or more; (c) 5% to 30% by weight, based on the dry weight of the polymer particle, a shell polymer having Tg of 50° C. or higher; wherein the shell polymer comprises polymerized units of all vinyl aromatic monomers in an amount of 1% or less, by weight based on the weight of the shell polymer.
    Type: Application
    Filed: March 4, 2019
    Publication date: February 25, 2021
    Inventors: Hailan Guo, Pu Luo, Morris Wills
  • Publication number: 20200385825
    Abstract: A method for forming chrome-free retanned leather including: (a) contacting wet white (chrome-free tanned hide) with a retanning mixture comprising from 2% to 15%, by solids weight, based on the wet weight of the wet white, of an amphoteric polymer composition comprising amine functional units and acid functional units; and (b) applying a polymeric overcoat containing an acrylic copolymer with one or more metal transition elements, with a thickness of no greater than 100 microns, to the retanned wet white, is provided. The present invention also provides a chrome-free retanned leather formed by the method.
    Type: Application
    Filed: December 18, 2015
    Publication date: December 10, 2020
    Inventors: Edwin Nungesser, Andrew Hejl, Caiyun Li, Pu Luo