Evonik Degussa Gmbh

Pia Buckel

Jürgen Meyer

Mario Scholz

Juergen Meyer

Andreas Hille

Werner Michel

Rüdiger Nowak

Juergen Heym

Fumed silicon dioxide powder in the form of aggregated primary particles having a BET surface area of 175&#xb1;15 m/g and a thickening effect, based on the BET surface area, of greater than 18 mPas g/mis hydrophobicized with polydimethylsiloxane. This hydrophobic fumed silica has a BET surface area of 110&#xb1;25 m/g. It can be used in epoxy resins. These epoxy resins in turn can be used as adhesives.

Silica and also epoxy resins

Adhesive, comprising silanized, structurally modified, pyrogenically prepared silicas containing on their surface fixed vinyl groups or vinylsilyl groups, with hydrophobic groups, such as trimethylsilyl and/or dimethylsilyl and/or monomethylsilyl, additionally being fixed on the surface.

Adhesives

Adhesive and sealant systems based on epoxy resins, polyurethane, silane-terminated polymers, silicones, unsaturated polyester resins, vinyl ester resins, acrylates, polyvinyl acetate, polyvinyl alcohol, polyvinyl ether, ethylene vinyl acetate, ethylene-acrylic acid copolymers, polyvinyl acetates, polystyrene, polyvinyl chloride, styrene-butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, polysulfide, polyethylene, polypropylene, fluorinated hydrocarbons, polyamides, saturated polyesters and copolyesters, phenol-formaldehyde resins, cresol-/resorcinol-formaldehyde resins, urea-formaldehyde resins, melamine-formaldehyde resins, polyimides, polybenzimidazoles, polysulfones, which contain 1 wt. % to 15 wt. % of a compacted, hydrophobic pyrogenic silica.

Adhesive and sealant systems

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Bruchkoebel, Germany

Pia Buckel