Patents Assigned to Chemische Fabrik Gruenau GmbH
  • Patent number: 5496881
    Abstract: The invention is an aqueous composition for forming fireproof coatings and caulking. The composition is halogen, asbestos and antimony-free. The composition contains 5-20% by weight of a binder resin; 10-60% by weight of a particulate flameproofing agent; 0.2 to 27.5% by weight of non-asbestos inorganic fibers with an average length of 300 micron; 0.1 to 10% by weight of a plasticizer; and water.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: March 5, 1996
    Assignee: Chemische Fabrik Gruenau GmbH
    Inventors: Dieter Annemaier, Robert Graf
  • Patent number: 5362363
    Abstract: The invention relates to aqueous dispersions of alkaline earth metal soaps and/or alkaline earth metal resin soaps for deinking printed wastepaper in which the dispersions containA. alkaline earth metal salts of C.sub.6-22 carboxylic acids and/or resinic acids andB. C.sub.6.22 oxoalcohols alkoxylated with 2 to less than 6 mol C.sub.2-4 alkylene oxides and alkali metal and/or alkaline earth metal alumimo silicates corresponding to general formula I0.7-1.5 cat.sub.2/n O.Al.sub.2 O.sub.3.0.8-6 SiO.sub.2in which cat represents alkali metal and/or alkaline earth metal cations and n is the valency of the alkali metal and/or alkaline earth metal cations.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: November 8, 1994
    Assignee: Chemische Fabrik Gruenau GmbH
    Inventors: Heinz-Gerd Smolka, Klaus Lehmann, Hans Hawel, Dieter Schraml, Klaus Hornfeck
  • Patent number: 4971656
    Abstract: A flotation process for the de-inking of printed waste-paper by treating the paper pulp in the pulper at alkaline pH-values by means of alkali silicate, oxidative bleaches and separating the loosened printing-ink particles from the fibrous material suspension by flotation, in which protein fatty acid condensates are added finely distributed, possibly together with dispersing agents, in a solution or dispersion which is fluid at normal temperature.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: November 20, 1990
    Assignee: Chemische Fabrik Gruenau GmbH
    Inventors: Klaus Lehmann, Andreas Domsch, Hans Hawel, Gregor Schuster
  • Patent number: 4959123
    Abstract: Process for deinking printed waste paper by treatment of the paper pulp in a pulper at alkaline pH values using alkali silicate, oxidative bleaches, higher fatty and/or resinic acids and dispersants and separation of the detached printing ink particles from the fiber suspension by flotation, the fatty and/or resinic acids being used in the form of their alkaline earth metal salts in fine distribution together with dispersants in an oil-in-water dispersion which is liquid at normal temperature.
    Type: Grant
    Filed: February 2, 1988
    Date of Patent: September 25, 1990
    Assignee: Chemische Fabrik Gruenau GmbH
    Inventors: Klaus Lehmann, Andreas Domsch, Hans Hawel