Patents by Inventor Sepehr M. Tehrani

Sepehr M. Tehrani 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: 20220162464
    Abstract: Methods for forming a monodisperse latex are provided. In an embodiment, such a method comprises adding a monomer emulsion comprising water, a monomer, an acidic monomer, a multifunctional monomer, a first reactive surfactant, and a chain transfer agent, to a reactive surfactant solution comprising water, a second reactive surfactant, and an initiator, at a feed rate over a period of time so that monomers of the monomer emulsion undergo polymerization reactions to form resin particles in a monodisperse latex, wherein the reactive surfactant solution does not comprise monomers other than the second reactive surfactant, the reactive surfactant solution does not comprise a resin seed, and the monomer emulsion does not comprise the resin seed. The monodisperse latexes are also provided.
    Type: Application
    Filed: November 24, 2020
    Publication date: May 26, 2022
    Inventors: Sepehr M. Tehrani, Marcel P. Breton
  • Publication number: 20220162349
    Abstract: Methods for forming a latex are provided. In an embodiment, such a method comprises adding a monomer emulsion comprising water, a monomer, an acidic monomer, a multifunctional monomer, a first reactive surfactant, and a chain transfer agent, to a reactive surfactant solution comprising water, a second reactive surfactant, and an initiator, at a feed rate over a period of time so that monomers of the monomer emulsion undergo polymerization reactions to form resin particles in a latex, wherein the reactive surfactant solution does not comprise monomers other than the second reactive surfactant, the reactive surfactant solution does not comprise a resin seed, and the monomer emulsion does not comprise the resin seed. The latexes are also provided.
    Type: Application
    Filed: April 14, 2021
    Publication date: May 26, 2022
    Inventors: Sepehr M. Tehrani, Marcel P. Breton
  • Publication number: 20220162460
    Abstract: Aqueous inkjet ink compositions are provided. In an embodiment, such an aqueous inkjet ink composition comprises water; a high viscosity latex; a colorant; and optionally, a wax. The high viscosity latex comprises water and resin particles comprising a polymerization product of a monomer, an acidic monomer, a hydrophilic monomer, a difunctional monomer, and a reactive surfactant. The high viscosity latex is characterized by a viscosity in a range of from 10 cP to 100 cP as measured at a solid content of 30% and at room temperature. The aqueous inkjet ink composition is free of a water-soluble binder. Methods of forming and using the aqueous inkjet ink compositions are also provided.
    Type: Application
    Filed: November 24, 2020
    Publication date: May 26, 2022
    Inventors: Sepehr M. Tehrani, Syed Mohsin Ali, Carlos Dondon, Biby Esther Abraham, C. Geoffrey Allen, Mihaela Maria Birau, Jennifer L. Belelie
  • Publication number: 20220162461
    Abstract: Aqueous inkjet ink compositions are provided. In an embodiment, such a composition comprises water; resin particles; and a colorant; wherein the resin particles comprise a polymerization product of reactants comprising a monomer, an acidic monomer, a multifunctional monomer, and a reactive surfactant, the resin particles having a D(z, ave) of no greater than about 150 nm, a D(v,90) of less than about 200 nm, and a polydispersity index (PDI) of no greater than about 0.050. Methods of forming and using the aqueous inkjet ink compositions are also provided.
    Type: Application
    Filed: April 14, 2021
    Publication date: May 26, 2022
    Inventors: Sepehr M. Tehrani, Marcel P. Breton, Syed Mohsin Ali, Carlos Dondon, Biby Esther Abraham, C. Geoffrey Allen, Mihaela Maria Birau
  • Publication number: 20220162361
    Abstract: Methods for forming high viscosity latexes are provided. In an embodiment, such a method comprises adding a monomer emulsion comprising water, a monomer, an acidic monomer, a hydrophilic monomer, a difunctional monomer, a first reactive surfactant, and a chain transfer agent, to a reactive surfactant solution comprising water, a second reactive surfactant, and an initiator, at a feed rate over a period of time so that monomers of the monomer emulsion undergo polymerization reactions to form resin particles in a high viscosity latex. The reactive surfactant solution does not comprise monomers other than the second reactive surfactant, the reactive surfactant solution does not comprise a resin seed, and the monomer emulsion does not comprise the resin seed. The high viscosity latex is characterized by a viscosity in a range of from 10 cP to 100 cP as measured at a solid content of 30% and at room temperature. The high viscosity latexes are also provided.
    Type: Application
    Filed: November 24, 2020
    Publication date: May 26, 2022
    Inventor: Sepehr M. Tehrani
  • Publication number: 20220162465
    Abstract: Aqueous inkjet ink compositions are provided. In an embodiment, such a composition comprises water; a monodisperse latex; and a colorant; wherein the monodisperse latex comprises resin particles comprising a polymerization product of a monomer, an acidic monomer, a multifunctional monomer, and a reactive surfactant, the resin particles having a D(z, ave) of no greater than 150 nm, a D(z, 90) of less than 200 nm, and a polydispersity index (PDI) of no greater than 0.050. Methods of forming and using the aqueous inkjet ink compositions are also provided.
    Type: Application
    Filed: November 24, 2020
    Publication date: May 26, 2022
    Inventors: Marcel P. Breton, Sepehr M. Tehrani, Syed Mohsin Ali, Carlos Dondon, Biby Esther Abraham, C. Geoffrey Allen, Mihaela Maria Birau
  • Publication number: 20220162368
    Abstract: Methods for forming latexes are provided. In an embodiment, such a method comprises adding a monomer emulsion comprising water, a monomer, an acidic monomer, a hydrophilic monomer, a difunctional monomer, a first reactive surfactant, and a chain transfer agent, to a reactive surfactant solution comprising water, a second reactive surfactant, and an initiator, at a feed rate over a period of time so that monomers of the monomer emulsion undergo polymerization reactions to form resin particles in a latex. The reactive surfactant solution does not comprise monomers other than the second reactive surfactant, the reactive surfactant solution does not comprise a resin seed, and the monomer emulsion does not comprise the resin seed. The latex is characterized by a viscosity in a range of from about 10 cP to about 100 cP as measured at a solid content of about 30% and at room temperature. The latexes are also provided.
    Type: Application
    Filed: April 14, 2021
    Publication date: May 26, 2022
    Inventor: Sepehr M. Tehrani