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US 5,139,702 AGranted
Naphthylamine polycarboxylic acids
AssigneeW. R. Grace & Co.-Conn.
InventorsCharles G. Carter, Robert P. Kreh, Lai-Duien G. Fan
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Abstract
A composition useful for treating aqueous systems comprising a naphthylamine polycarboxylic acid having the formula: ##STR1## wherein X is CO.sub.2 H or SO.sub.3 H, Y is H, C.sub.1 to C.sub.6 alkyl, CO.sub.2 H or SO.sub.3 H, R is H, C.sub.1 to C.sub.6 alkyl, CO.sub.2 R' or COR', R' is C.sub.1 to C.sub.6 alkyl, n is an integer from 1 to 20, and water soluble salts thereof.
Claims20
A scale and/or corrosion inhibitor composition useful for treating aqueous systems which loose water upon evaporation comprising a naphthylamine polycarboxylic acid having the formula:
- ##STR6## wherein X is CO.sub.2 H or SO.sub.3 H, Y is H, C.sub.1 to C.sub.6 alkyl, CO.sub.2 H or SO.sub.3 H, R is H, C.sub.1 to C.sub.6 alkyl, CO.sub.2 R' or COR', R' is C.sub.1 to C.sub.6 alkyl, n is an integer from 1 to 20, and water soluble salts thereof.
Dependencies are inferred from the claim text.