MODIFIED COMPOUND CONTAINING SILICIC ACID AND SILICONE RUBBER CONTAINING THE SAID COMPOSITION

Preparing a composition comprising a surface-modified silica, comprises contacting a hydrophilic silica with 5-40 pts. wt. hydrophilic silica of an alpha ,omega -hydroxy-terminated oligodimethylsiloxane having an average molar mass of 166-800 g/mol at a temperature of -10[deg] C to 50[deg] C, and ma...

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Bibliographische Detailangaben
Hauptverfasser:	SCHOLZ, MARIO, MEYER. JÜRGEN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM ADHESIVES CHEMISTRY COMPOSITIONS BASED THEREON COMPOUNDS THEREOF DYES INORGANIC CHEMISTRY METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-METALLIC ELEMENTS ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PAINTS 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:	Preparing a composition comprising a surface-modified silica, comprises contacting a hydrophilic silica with 5-40 pts. wt. hydrophilic silica of an alpha ,omega -hydroxy-terminated oligodimethylsiloxane having an average molar mass of 166-800 g/mol at a temperature of -10[deg] C to 50[deg] C, and maintaining the obtained reaction mixture at a temperature of -10[deg] C to 50[deg] C for 3 days. Independent claims are included for: (1) the composition comprising surface-modified silica that comprises (a) a structure, in accordance with transmission electron microscopy, in the form of aggregated primary particles having a Brunauer-Emmett-Teller surface area of 150-250 m2>/g, (b) a silicon dioxide content of 91.5-96 wt.% and a carbon content of 2.5-4 wt.%, (c) a D/Q ratio of high power decoupling of silicon-29-nuclear magnetic resonance spectroscopy of 40:60, where D is an area of signal in D group at 90-120 ppm and Q is an area of signal in Q group at 10-30 ppm, and (d) an infrared spectrum quotient (E3660/E1870) of greater than 1.3 and infrared spectrum quotient (E3500/E1870) of less than 2, where E3660 has a vibrational absorption band of 3660 cm->1>, E3500 has a vibrational absorption band of 3500 cm->1> and E1870 has a vibrational absorption band of 1870 cm->1>, obtained by the above method; (2) a silicone rubber comprising the composition and organopolysiloxane; and (3) preparing a silicone rubber comprising preparing the composition comprising surface-modified silica. Verfahren zur Herstellung einer wenigstens eine oberflächenmodifizierte Kieselsäure enthaltenden Zusammensetzung, bei dem man a) eine hydrophile Kieselsäure mit b) 5 bis 40 Gewichtsanteilen pro 100 Gewichtsanteilen hydrophile Kieselsäure, eines ±,É-hydroxyterminierten Oligodimethylsiloxanes mit einem mittleren Molekulargewicht von 166 bis 800 g/mol zunächst in Kontakt bringt, wobei das Inkontaktbringen bei Temperaturen von -10°C bis 50°C erfolgt und c) nachfolgend das so erhaltene Reaktionsgemisch wenigstens 3 Tage bei Temperaturen von -10°C bis 50°C belässt.