Gypsum composition for refractory moulds

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United States of America Patent

PATENT NO 10052680
APP PUB NO 20150183023A1
SERIAL NO

14404545

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Abstract

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The invention relates to a mineral composition for the preparation of foundry molds, comprising:

    (a) from 20% to 90% by weight of plaster,(b) from 10% to 80% by weight of a mineral component based on silica and/or alumina, and(c) from 0.5% to 4.8%, preferably from 1.5% to 4.5% and in particular between 2% and 4.5% by weight, of a mineral powder having a thermal conductivity (λ), at 20° C., of greater than 15 W/(m·K) and a specific surface area of greater than 10 m2/g,these percentages being relative to the total weight of the sum of the components (a), (b) and (c).

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Patent Owner(s)

Patent OwnerAddress
SAINT-GOBAIN PLACOTOUR SAINT-GOBAIN 12 PLACE DE L'IRIS 92400 COURBEVOIE 92400

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fourdrin, Emmanuel Velleron, FR 4 4
Petigny, Nathalie Velleron, FR 3 12
Retot, Helene Avignon, FR 2 4
Thioliere, Stephane Gif sur Yvette, FR 7 97

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