Patents Assigned to Association de Gestion de L'Ecole Francaise de Papeterie et des Industries Graphiques (AGEFPI)
  • Method for treating chemical pulps by treatment with ozone in the presence of magnesium ions
    Patent number: 10006168
    Abstract: This invention relates to a method for treating chemical paper pulp comprising a step of treating the pulp with ozone followed by a step of alkaline extraction, in which alkaline extraction takes place in the presence of magnesium ions (Mg2+).
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: June 26, 2018
    Assignees: L'Air Liquide Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude, Association de Gestion De L'Ecole Francaise de Papeterie et des Industries Graphiques (AGEFPI), Degremont France, Xylem Water Solutions Herford GmbH, Arkema France
    Inventors: Frederic Pouyet, Dominique Lachenal, Christine Chirat
  • METHOD FOR TREATING CHEMICAL PULPS BY TREATMENT WITH OZONE IN THE PRESENCE OF MAGNESIUM IONS
    Publication number: 20160130751
    Abstract: This invention relates to a method for treating chemical paper pulp comprising a step of treating the pulp with ozone followed by a step of alkaline extraction, in which alkaline extraction takes place in the presence of magnesium ions (Mg2+).
    Type: Application
    Filed: June 13, 2014
    Publication date: May 12, 2016
    Applicants: L'Air Liquid Societe Anonyme pour L'Etude et Explo itation des Procedes Georges Claude, Association de Gestion de L'Ecole Francaise de Papeterie et des Industries Graphiques (AGEFPI), Degremont France, Xylem Water Solutions Herford GmbH, Arkema France
    Inventors: Frédéric Pouyet, Dominique Lachenal, Christine Chirat