Aqueous dispersion of a hydrophobic silica
AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorsGerd Lumbeck, Horst Ferch
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Abstract
An aqueous dispersion of a hydrophobic silica consisting of 0.1 to 50 parts of hydrophobic silica, in a given case up to 3 parts of wetting agent and 99.9 to 50 parts of water. It is produced by intensive mixing of hydrophobic silica with water with the known "dry-water-phase" as an intermediate step. In a given case there can additionally be used a wetting agent in which case the "dry-water-phase" does not occur. The dispersion of hydrophobic silicas can be mixed without additional steps or materials with rubber latex.
Claims8
An aqueous dispersion consisting essentially of 0.1 to 50 parts of hydrophobic silica, 0 to 3 parts of wetting agent and 99.9 to 50 parts of water, the hydrophobic silica being either a pyrogenic silica hydrophobized with a silane or a precipitated silica hydrophobized with a silane.
Dependencies are inferred from the claim text.