Precipitated silica

Precipitated silica

The precipitated silica has the following physico-chemical parameters: BET surface area (DIN 66131) in m2/g 400-600; DBP index (DIN 53601) in g/100 g 300-360; compacted density (DIN 53194) in g/l 70-140; Grindometer value (ISO 1524) in m 15-50; Size distribution index I < 1.0 measured with a Malv...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SCHEFFLER, JOCHEN, SIRAY, MUSTAFA
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COMPOUNDS THEREOF
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
INORGANIC CHEMISTRY
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-METALLIC ELEMENTS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
PREPARATION OF CARBON BLACK
TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
USE OF MATERIALS THEREFOR
WOODSTAINS
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Beschreibung
Zusammenfassung:The precipitated silica has the following physico-chemical parameters: BET surface area (DIN 66131) in m2/g 400-600; DBP index (DIN 53601) in g/100 g 300-360; compacted density (DIN 53194) in g/l 70-140; Grindometer value (ISO 1524) in m 15-50; Size distribution index I < 1.0 measured with a Malvern instrument size distribution index I=(d90-d10)/2d50 It is prepared by milling a precipitated silica in accordance with DE-A 31 44 299 in a classifier mill or a fluidized bed counter-flow mill. A polyethylene wax emulsion may be added before the milling procedure. The precipitated silica then has the following physico-chemical parameters: BET surface area (DIN 66131) in m2/g 351-600; DBP index (DIN 53601) as a % 300-360; carbon content as a % 1-8; compacted density (DIN 53194) in g/l 70-140; Grindometer value (ISO 1524) in m 15-50; size distribution index I < 1.0. The precipitated silicas may be used as matting agents in lacquer systems.