Patents Assigned to OMYA Development AG
  • Publication number: 20090301351
    Abstract: It is an object of the present invention to provide a process of manufacturing calcium carbonate-containing slurries, wherein said calcium carbonate-containing slurries are prepared by adding one or more zirconium compounds, and possibly one or more further phosphate-free additives acting as dispersing and/or grinding aid agents. An other object of the invention lies in calcium carbonate-containing slurries thus obtained, and dry calcium carbonate mineral pigments resulting from the drying of such slurries. A further object of the invention is the use of such slurries and such dry mineral pigments in paper manufacturing, plastic coatings, as fillers for plastics or for aqueous paint compositions and the like. Papers, paints and plastics containing such slurries and such dry pigments are also an object of the present invention.
    Type: Application
    Filed: July 11, 2006
    Publication date: December 10, 2009
    Applicant: OMYA DEVELOPMENT AG
    Inventors: Matthais Buri, Joachim Schoelkopf, Michael Kaessberger
  • Publication number: 20090227721
    Abstract: The invention relates to the selection of a natural calcium carbonate crushed to a high degree of fineness, possibly treated with one or more fatty acids or one or more of their salts or mixtures thereof, and its use as a rheology regulator for polymeric compositions. The specific surface area is 14 to 30 m2/g measured according to the BET method to ISO 4652, and the oil absorption is greater than 16 measured according to ISO 787-V (Rub-out method). The conditions of mixing of the constituents and manufacture are improved, as well as the properties of the final product.
    Type: Application
    Filed: May 22, 2009
    Publication date: September 10, 2009
    Applicant: OMYA DEVELOPMENT AG
    Inventors: Pierre Blanchard, Detlef Gysau, Patrick Trouve, Henny Loman, Marion Loman-Oonk
  • Publication number: 20090211493
    Abstract: The invention concerns a new synthetic mineral matter containing carbonate, the decomposition of which reduces the rate of fossil fuel carbon dioxide emission. It also concerns its manufacture in batches, or in a batch-continuous manner, or in a continuous manner, together with its uses in the pharmaceutical field, the field of human or animal foodstuffs, or again the papermaking field with, notably, manufacture of paper, filler or coating, or again every other paper surface treatment, together with the fields of water-based or non-water-based paints, together with the field of plastics, such as that of breathable polyethylene films, or again the field of printing inks.
    Type: Application
    Filed: May 11, 2006
    Publication date: August 27, 2009
    Applicant: OMYA DEVELOPMENT AG
    Inventors: Matthias Buri, Thoralf Gliese
  • Publication number: 20090169894
    Abstract: The present invention relates to composites, comprising inorganic and/or organic pigments and/or fillers in the form of microparticles, the surface of which is coated at least partially with finely divided nano-dolomiie with the help of binders based on copolymers comprising as monomers one or more diearboxyjic acids and one or more monomers from the group of diamines, triammcs, dialkanolamines or maikanohitnmes, a method for producing such composites, aqueous slurries thereof, their use, and the use of the inventive binders for coating the microparticles with nano-dolomite.
    Type: Application
    Filed: June 5, 2007
    Publication date: July 2, 2009
    Applicant: OMYA DEVELOPMENT AG
    Inventors: Matthias Buri, Patrick A.C. Gane, Rene Vinzenz Blum
  • Patent number: 7514488
    Abstract: The invention relates to the use of a weakly ionic and water-soluble copolymer as a grinding aid agent for grinding mineral matter in aqueous suspension in order to obtain aqueous suspensions of refined mineral matter, with a dry matter concentration that can be high, with a low Brookfield™ viscosity that remains stable over time, having the property that it presents a pigmentary surface area the ionic charge of which, as determined by ionic titration, is low. The invention relates to the aqueous suspensions of mineral matter obtained and their use in the fields of paper, paint and plastics.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: April 7, 2009
    Assignee: Omya Development AG
    Inventors: Patrick A. C. Gane, Matthias Buri, Beat Karth
  • Patent number: 7470739
    Abstract: The invention relates to the use of a weakly ionic and water-soluble copolymer as a grinding aid agent for grinding mineral matter in aqueous suspension in order to obtain aqueous suspensions of refined mineral matter, with a dry matter concentration that can be high, with a low Brookfield™ viscosity that remains stable over time, having the property that it presents a pigmentary surface area the ionic charge of which, as determined by ionic titration, is low. The invention relates to the aqueous suspensions of mineral matter obtained and their use in the fields of paper, paint and plastics.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: December 30, 2008
    Assignee: Omya Development AG
    Inventors: Patrick A. C. Gane, Matthias Buri, Beat Karth
  • Patent number: 7312258
    Abstract: The invention relates to a method for treating a mineral filler by means of a polydialkylsiloxane and a fatty acid, the hydrophobic fillers thus obtained, and the application thereof in polymers for the manufacture of films and notably “breathable” films.
    Type: Grant
    Filed: January 10, 2002
    Date of Patent: December 25, 2007
    Assignee: Omya Development AG
    Inventors: Hans Ulrich Hoppler, Edwin Ochsner, Daniel Frey
  • Patent number: 7309452
    Abstract: The present invention discloses an aqueous phenolates-containing liquid formulation having a solidification point of less than or equal to ?10° C. which is characterized by comprising the following components: a) 50-80% by wt. of one or more phenolates; b) 0.1-10% by wt. of at least one crystallization inhibitor; and water and optionally other components forming the balance.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: December 18, 2007
    Assignee: OMYA Development AG
    Inventors: Matthias Buri, Patrick Schwarzentruber