Use of a particulate material comprising a particle-shaped synthetic amorphic silicon dioxide as an additive for a molding material mixture, corresponding method, mixtures, and kits

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United States of America Patent

PATENT NO 11975382
APP PUB NO 20220226882A1
SERIAL NO

17609090

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Abstract

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What is described is the use of a particulate material comprising, as its sole constituent or as one of multiple constituents, a particulate synthetic amorphous silicon dioxide having a particle size distribution with a median in the range from 0.1 to 0.4 μm, determined by means of laser scattering, as additive for a molding material mixture at least comprising: a refractory mold base material having an AFS grain fineness number in the range from 30 to 100, particulate amorphous silicon dioxide having a particle size distribution with a median in the range from 0.7 to 1.5 μm, determined by means of laser scattering, and water glass, for increasing the moisture resistance of a molding producible by hot curing of the molding material mixture. Also described are corresponding processes, mixtures and kits.

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Patent Owner(s)

Patent OwnerAddress
HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNGWIESENSTRASSE 23 DÜSSELDORF 40549

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lustig, Christian Düsseldorf, DE 11 121
Müller, Edgar Langenhagen, DE 24 409
Reinold, Lukas Mirko Hannover, DE 6 2
Vargovic, René Wunstorf, DE 2 1

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