Use of closed-pore microspheres of expanded pearlite as a filler for the production of mouldings for the foundry industry

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United States of America Patent

PATENT NO 11717879
APP PUB NO 20190118244A1
SERIAL NO

16092115

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Abstract

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The present invention relates to the use of closed-pore microspheres of expanded perlite as a filler for producing moldings for the foundry industry, to a composition for producing moldings for the foundry industry, comprising closed-pore microspheres of expanded perlite as a filler, and a binder, the binder being selected from the group consisting of water glass, phenol-formaldehyde resins, two-component systems comprising as reactants a polyisocyanate and a polyol component containing free hydroxyl groups (OH groups), and starch, and also to moldings for the foundry industry and to a process for producing a molding for the foundry industry.

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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
Hübert, Jürgen Langenhagen, DE 10 10
Lehmann, Sandra Potsdam, DE 12 5
Lieber, Hermann Langenhagen, DE 10 10
Riemann, Klaus Wunstorf, DE 11 4
Zimmer, Nils Garbsen, DE 11 4

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