Patents by Inventor Kati Eskelinen

Kati Eskelinen 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).

  • Method for increasing the reactivity of lignin
    Patent number: 10246619
    Abstract: The present invention relates to a method for increasing the reactivity of lignin, wherein the method comprises the following steps: a) forming, under heating at a temperature of 30-70° C., an aqueous dispersion comprising alkali and lignin, wherein the alkali comprises a hydroxide of an alkali metal; and b) heating the dispersion formed in step a) at a temperature of 50-95° C. for producing alkalated lignin.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: April 2, 2019
    Assignee: UPM-KYMMENE CORPORATION
    Inventors: Suvi Pietarinen, Okko Ringena, Kati Eskelinen, Sanna Valkonen
  • Method for fractionating lignin
    Patent number: 9896469
    Abstract: The present invention relates to a method for fractionating lignin, wherein the method comprises the following steps: (i) dissolving lignin into a mixture containing organic solvent and water; and (ii) ultrafiltrating the mixture formed in step (i) through one or more filtration membranes for producing a predetermined number of lignin fractions, wherein each fraction contains lignin with a molecular weight within a predetermined range. The present invention further relates to a lignin fraction and to the uses thereof.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: February 20, 2018
    Assignee: UPM-KYMMENE CORPORATION
    Inventors: Kati Eskelinen, Sanna Valkonen, Suvi Pietarinen
  • METHOD FOR INCREASING THE REACTIVITY OF LIGNIN
    Publication number: 20160369141
    Abstract: The present invention relates to a method for increasing the reactivity of lignin, wherein the method comprises the following steps: a) forming, under heating at a temperature of 30-70° C., an aqueous dispersion comprising alkali and lignin, wherein the alkali comprises a hydroxide of an alkali metal; and b) heating the dispersion formed in step a) at a temperature of 50-95° C. for producing alkalated lignin.
    Type: Application
    Filed: August 30, 2016
    Publication date: December 22, 2016
    Inventors: Suvi PIETARINEN, Okko RINGENA, Kati ESKELINEN, Sanna VALKONEN
  • Use of low molecular weight lignin together with lignin for the production of a phenol-formaldehyde binder composition
    Patent number: 9469795
    Abstract: The present invention relates to a method for producing a binder composition, wherein the method comprises the following steps: (i) forming an aqueous composition comprising reactant components including lignin molecules of 11-60 lignin units, lignin molecules of 1-10 lignin units, polymerizable substance and crosslinking agent in the presence of a catalyst; and (ii) cooking the composition at a temperature of 60-95° C. for polymerizing the reactant components until a binder composition with a predetermined viscosity value is formed.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: October 18, 2016
    Assignee: UPM-Kymmene Corporation
    Inventors: Sanna Valkonen, Suvi Pietarinen, Okko Ringena, Kati Eskelinen
  • Method for increasing the reactivity of lignin
    Patent number: 9464219
    Abstract: The present invention relates to a method for increasing the reactivity of lignin, wherein the method comprises the following steps: a) forming, under heating at a temperature of 30-70° C., an aqueous dispersion comprising alkali and lignin, wherein the alkali comprises a hydroxide of an alkali metal; and b) heating the dispersion formed in step a) at a temperature of 50-95° C. for producing alkalated lignin.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: October 11, 2016
    Assignee: UPM-Kymmene Corporation
    Inventors: Suvi Pietarinen, Okko Ringena, Kati Eskelinen, Sanna Valkonen
  • METHOD FOR FRACTIONATING LIGNIN
    Publication number: 20150183813
    Abstract: The present invention relates to a method for fractionating lignin, wherein the method comprises the following steps: (i) dissolving lignin into a mixture containing organic solvent and water; and (ii) ultrafiltrating the mixture formed in step (i) through one or more filtration membranes for producing a predetermined number of lignin fractions, wherein each fraction contains lignin with a molecular weight within a predetermined range. The present invention further relates to a lignin fraction and to the uses thereof.
    Type: Application
    Filed: June 5, 2013
    Publication date: July 2, 2015
    Inventors: Kati Eskelinen, Sanna Valkonen, Suvi Pietarinen
  • USE OF LOW MOLECULAR WEIGHT LIGNIN TOGETHER WITH LIGNIN FOR THE PRODUCTION OF A PHENOL-FORMALDEHYDE BINDER COMPOSITION
    Publication number: 20150087781
    Abstract: The present invention relates to a method for producing a binder composition, wherein the method comprises the following steps: (i) forming an aqueous composition comprising reactant components including lignin molecules of 11-60 lignin units, lignin molecules of 1-10 lignin units, polymerizable substance and crosslinking agent in the presence of a catalyst; and (ii) cooking the composition at a temperature of 60-95° C. for polymerizing the reactant components until a binder composition with a predetermined viscosity value is formed.
    Type: Application
    Filed: March 28, 2013
    Publication date: March 26, 2015
    Inventors: Sanna Valkonen, Suvi Pietarinen, Okko Ringena, Kati Eskelinen
  • METHOD FOR INCREASING THE REACTIVITY OF LIGNIN
    Publication number: 20140249271
    Abstract: The present invention relates to a method for increasing the reactivity of lignin, wherein the method comprises the following steps: a) forming, under heating at a temperature of 30-70° C., an aqueous dispersion comprising alkali and lignin, wherein the alkali comprises a hydroxide of an alkali metal; and b) heating the dispersion formed in step a) at a temperature of 50-95° C. for producing alkalated lignin.
    Type: Application
    Filed: March 28, 2013
    Publication date: September 4, 2014
    Inventors: Suvi Pietarinen, Okko Ringena, Kati Eskelinen, Sanna Valkonen