Polyphenolamine composition and method of use
AssigneeGE Betz, Inc.
InventorsWilliam S. Carey, Bruce Haberle, Jeffrey I. Melzer, Edward A. Rodzewich, Ping Lue, Andrew Solov
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Abstract
The present invention relates to a composition for the treatment of metal substrates including an aqueous solution of a Group IVA metal ion, selected from the group consisting of zirconium, titanium, hafnium and mixtures thereof, and a water-soluble or water-dispersible polyphenolamine.
Claims14
A composition for the treatment of metal substrates, comprising an aqueous solution of a Group IVA metal ion, selected from the group consisting of zirconium, titanium, hafnium, and mixtures thereof, and a water-soluble or water-dispersible polyphenolamine having the general formula:
- wherein R1 is a substituted or unsubstituted C1-C18 alkyl or aryl, or mixtures thereof;
- x is 1-100;
- R2 is a hydrogen, substituted or unsubstituted alkyl, aryl, hydroxyalkyl, —[—CH(R3)—CH2—O—]n—R3, or mixtures thereof;
- R3 is a hydrogen, C1-C18 alkyl radical, or mixtures thereof;
- and n is 1-100.
A method for inhibiting corrosion of a corrodible metal substrate, said method comprising:
- contacting the metal substrate with a composition comprising an aqueous solution of a Group IVA metal ion, selected from the group consisting of zirconium, titanium, hafnium, and mixtures thereof, and a water-soluble or water-dispersible polyphenolamine having the general formula:
- wherein R1 is a substituted or unsubstituted C1-C18 alkyl or aryl, or mixtures thereof;
- x is 1-100;
- R2 is a hydrogen, substituted or unsubstituted alkyl, aryl, hydroxyalkyl, —[—CH(R3)—CH2—O—]n—R3, or mixtures thereof;
- R3 is a hydrogen, C1-C18 alkyl radical, or mixtures thereof;
- and n is 1-100.
Dependencies are inferred from the claim text.