PROCESS FOR PREPARING IRON OXIDE YELLOW PIGMENTS
The present invention relates to a process for preparing iron oxide yellow pigments having a low silking effect, the formation of nuclei of needle-shaped alpha -FeOOH yellow pigments being performed in the presence of compounds of the elements B, Al, Ga, Si, Ge, Sn or Pb in amounts from 0.05 to 10%...
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| creator | KROECKERT, BERND PRINTZEN, HELMUT HOEFS, HANS-ULRICH BIERMANN, HANS-PETER |
| description | The present invention relates to a process for preparing iron oxide yellow pigments having a low silking effect, the formation of nuclei of needle-shaped alpha -FeOOH yellow pigments being performed in the presence of compounds of the elements B, Al, Ga, Si, Ge, Sn or Pb in amounts from 0.05 to 10% by weight, calculated as the tri- or tetravalent oxides, and relative to the alpha -FeOOH precipitated in the formation of nuclei, and an iron oxide yellow pigment being allowed to grow on the yellow nucleus. |
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| language | eng ; ger |
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| subjects | ADHESIVES CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F DYES INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES PREPARATION OF CARBON BLACK TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES |
| title | PROCESS FOR PREPARING IRON OXIDE YELLOW PIGMENTS |
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