Silylated silica with low levels of silicon-bonded hydroxy groups useful in toners, developers, charge control agents and flow improvers for powder systems and in crosslinkable polymer and resin compositions

Provided silylated silica (I) with specified silicon-bonded hydroxy (SiOH) groups per nm of BET surface area is new. Silylated silica (I) with less than 0.6 silicon-bonded hydroxy (SiOH) groups per nm of BET surface area is new. Independent claims are also included for: (1) production of (I) by reac...

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Bibliographische Detailangaben
Hauptverfasser:	BARTHEL, HERBERT, HEINEMANN, MARIO, VOELKEL, UTE, GRUENWALD, FRANZ, MAGINOT, HELMUT
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ADHESIVES CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOUNDS THEREOF DYES ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY INORGANIC CHEMISTRY MAGNETOGRAPHY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PHOTOGRAPHY PHYSICS POLISHES PREPARATION OF CARBON BLACK THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Provided silylated silica (I) with specified silicon-bonded hydroxy (SiOH) groups per nm of BET surface area is new. Silylated silica (I) with less than 0.6 silicon-bonded hydroxy (SiOH) groups per nm of BET surface area is new. Independent claims are also included for: (1) production of (I) by reacting hydrophilic silica with a silylating agent and then removing the silylating agent and by-products; (2) (I)-containing toners, developers, charge control agents and flow improvers for powder systems; (3) crosslinkable polymer and resin compositions containing (I). Silylierte Kieselsäure mit einer Dichte an SiOH pro nm·2· kleiner als 0,6, bezogen auf die Oberfläche nach BET-Verfahren (DIN 66131 und 66132).