Wacker-chemie Gmbh

Consortium Fur Elektrochemische Industrie Gmbh

Wilfried Lang

Gunter Kratel

Hans Katzer

Ernst Muhlhofer

Stephan Loskot

Klaus Weis

Stephen Loskot

A process for the production of pyrogenic silicic acid having an increased thickening effect which comprises subjecting silicon-containing materials to a pyrolysis flame while introducing additional energy into the flame. The invention also relates to the product so obtained, particularly useful for articles of dental care.

Process for producing pyrogenic silicic acid with increased thickening

An agglomerated mixture includes 30-95% by weight of highly dispersed metal oxides produced by flame hydrolysis and 5-70% by weight of inorganic opacifiers that have at least one absorption maximum in the range between 1.5 and 10 .mu.m, selected from the group consisting of inorganic oxides and mixed oxides, carbides and nitrides. The invention also relates to a process of manufacturing the mixtures and to their use as heat-insulating material and the like.

Agglomerated mixtures of highly dispersed metal oxides and opacifiers

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Sulzberg, Germany

Wilfried Lang