Boric acid-free composition for removing deposits containing cryolite

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United States of America Patent

PATENT NO 11434573
APP PUB NO 20200385872A1
SERIAL NO

16769966

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Abstract

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Described herein is an aqueous composition for removing cryolitic deposits from plants or parts of plants which serve for the conversion treatment of metal surfaces, said composition including

    a) at least one mineral acid, andb) at least one dicarboxylic acid of the formula HOOC—(CH2)x—COOH,where x is 0 to 3 and no borate-containing compounds have been added to the composition. Also described herein is a corresponding method for removing cryolitic deposits.

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Patent Owner(s)

Patent OwnerAddress
CHEMETALL GMBH60487 FRANKFURT

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mohr, Anna Verena Frankfurt am Main, DE 6 3

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