PROCESS FOR PREPARING A LOW- SURFACE AREA FUMED SILICON DIOXIDE POWDER

PROCESS FOR PREPARING A LOW- SURFACE AREA FUMED SILICON DIOXIDE POWDER

Fumed silicon dioxide powder with a BET surface area of 20 to 35 m2/g, characterized in that a) the number-based median particle diameter is 60 to 150 nm, and b) the proportion of particles with a diameter of 200 nm or more is at most 10%, and c) the proportion of particles with a diameter of up to...

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Bibliographische Detailangaben
Hauptverfasser: KATUSIC, STIPAN, KATERINAK, WITOLD, MOERTERS, MARTIN, ZIMMERMANN, GUIDO, MIESS, HORST
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ADHESIVES
CHEMISTRY
COMPOUNDS THEREOF
DYES
INORGANIC CHEMISTRY
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-METALLIC ELEMENTS
PAINTS
POLISHES
PREPARATION OF CARBON BLACK
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Beschreibung
Zusammenfassung:Fumed silicon dioxide powder with a BET surface area of 20 to 35 m2/g, characterized in that a) the number-based median particle diameter is 60 to 150 nm, and b) the proportion of particles with a diameter of 200 nm or more is at most 10%, and c) the proportion of particles with a diameter of up to 60 nm is at most 20%, based in each case on the total number of particles.