| OMYA DEVELOPMENT AG Patent applications |
| Patent application number | Title | Published |
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| 20120097153 | COOLANT - Specific fluid, which is a site of energy conversion, characterized in that it comprises water, strongly scattering mineral powder, in general calcium carbonate, antifreeze and/or a colorant, a surfactant and an antifoam, the powder having a concentration by mass of between 1% and 3% and a median particle size of between 0.8 and 10 μm. | 04-26-2012 |
| 20120094953 | PROCESS FOR THE PRODUCTION OF NANO-FIBRILLAR CELLULOSE SUSPENSIONS - The present invention relates to a process for the production of suspensions of nano-fibrillar cellulose by providing cellulose fibres and at least one filler and/or pigment; combining the cellulose fibres and the at least one filler and/or pigment; and fibrillating the cellulose fibres in the presence of at least one filler and/or pigment, as well as the suspensions of nano-fibrillar cellulose obtained by this process and their uses. | 04-19-2012 |
| 20110288679 | METHOD FOR SEPARATING MINERAL IMPURITIES FROM CALCIUM CARBONATE-CONTAINING ROCKS BY X-RAY SORTING - The present invention relates to a method for separating mineral impurities from calcium carbonate-containing rocks by comminuting the calcium carbonate-containing rocks to a particle size in the range of from 1 mm to 250 mm, separating the calcium carbonate particles by means of a dual energy X-ray transmission sorting device. | 11-24-2011 |
| 20110245396 | NOVEL RHEOLOGY REGULATORS SUCH AS GROUND NATURAL CALCIUM CARBONATES OPTIONALLY TREATED WITH A FATTY ACID OR SALT AND THEIR USE - 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. | 10-06-2011 |
| 20110158890 | PROCESS TO PREPARE PRECIPITATED CALCIUM CARBONATE IMPLEMENTING LOW CHARGE ACRYLATE A/O MALEINATE-CONTAINING POLYMER - Process to prepare a precipitated calcium carbonate (PCC) comprising the following steps: (i) providing CaO, which is optionally partially or fully slaked (hereafter “calcium source”); ({umlaut over (ν)}) providing a CO | 06-30-2011 |
| 20100258258 | USE OF A SURFACE-REACTED CALCIUM CARBONATE IN TISSUE PAPER, PROCESS TO PREPARE A TISSUE PAPER PRODUCT OF IMPROVED SOFTNESS, AND RESULTING IMPROVED SOFTNESS TISSUE PAPER PRODUCTS - The present invention relates to the use of a surface-reacted natural calcium carbonate as filler in tissue paper products, to a process to prepare tissue paper products, and to a tissue paper product featuring an improved softness, wherein said surface-reacted natural calcium carbonate is the reaction product of a natural calcium carbonate with an acid and carbon dioxide, which is formed in situ by the acid treatment and/or supplied externally. | 10-14-2010 |
| 20100135891 | PROCESS FOR PRODUCTION OF PCC - The present invention relates to a process of preparing precipitated calcium carbonate (PCC) in a low energy intensity reactor in such a manner that the amount of solids in the PCC product can be raised to 35% or more without performing a dewatering step. The process comprises performing in parallel and in two or more separate reaction vessel the steps of contacting calcium hydroxide with a gas comprising carbon dioxide to allow formation of calcium carbonate, and adding calcium oxide, lime or dry calcium hydroxide or a combination of any of the three to a part of the resulting mixture of calcium hydroxide and calcium carbonate. The invention further provides a specialized reactor system as well as the use of this reactor system in the manufacture of PCC. | 06-03-2010 |
| 20100051216 | PROCESS FOR THE CONTROL OF PITCH - The present invention relates to a process for the control of pitch in an aqueous medium by adding surface-reacted natural calcium carbonate or an aqueous suspension comprising surface-reacted calcium carbonate and having a pH greater than 6.0 measured at 20° C., to the medium, wherein the surface-reacted calcium carbonate is a reaction product of natural calcium carbonate with carbon dioxide and one or more acids, the use of the surface-reacted natural calcium carbonate for pitch control, as well as to a combination of a surface-reacted natural calcium carbonate and talc for pitch control, and the resulting composites. | 03-04-2010 |
| 20090324979 | CALCIUM CARBONATE BARRIER FILMS AND USES THEREOF - The present invention provides polyolefin films comprising calcium carbonate that have a reduced moisture vapor transmission rate, methods of making the films, and packaging materials comprising the films. | 12-31-2009 |
| 20090301351 | PROCESS TO DISPERSE AND/OR GRIND AND/OR CONCENTRATE CALCIUM CARBONATE IN AQUEOUS MEDIA USING AN AQUEOUS SOLUTION CONTAINING ZIRCONIUM COMPOUNDS - 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. | 12-10-2009 |
| 20090211493 | Different Types Of Mineral Matter Containing Carbonate With Reduced Fossil Fuel Carbon Dioxide Emission On Breakdown, Together With Their Synthesis Process And Their Uses - The invention concerns a new synthetic mineral matter containing carbonate, the decomposition of which reduces the rate of fossil fuel carbon dioxide emission. | 08-27-2009 |
| 20090169894 | Composite of Inorganic and/or Organic Microparticles and Nano-Dolomite Particles - 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. | 07-02-2009 |
