Patents Assigned to BK Ladenburg GmbH fur Chemische Erzeugnisse
  • Process and agent for the oxidative bleaching of wood pulp and for deinking waste paper
    Patent number: 5607544
    Abstract: The present invention provides a process for the oxidative bleaching of wood pulps and for deinking waste paper by means of hydrogen peroxide and a stabilizing agent, wherein, as stabilizing agent, there is used 2-oxo-2-(4-hydroxyphenyl)-acethydroximic acid chloride (N,4-dihydroxy-.alpha.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: March 4, 1997
    Assignee: BK Ladenburg GmbH fur Chemische Erzeugnisse
    Inventors: Wolfram Salzburger, Silke Eifler, Margarete Scholl