Ciba-geigy Corporation

Emyr Phillips

Adalbert Braig

Robert C Wasson

David G Leppard

Hans-Rudolf Meier

Robert M O'Neil

Hermann O Wirth

Hugo Camenzind

Donald Richard Randell

Brian Holt

William P Armstrong

David Wilson

Brian G Clubley

Robert M Neil

A coating composition comprising a) an organic film-forming binder; and b) a corrosion-inhibiting amount of a substantially water-insoluble mono- or poly-basic salt of: i) a ketoacid having the formula I: ##STR1## in which m and n, independently, are 0 or an integer from 1 to 10 provided that the sum of m and n is at least 1; A is C.sub.1 -C.sub.15 alkyl, C.sub.2 -C.sub.15 alkenyl, optionally substituted C.sub.3 -C.sub.12 cycloalkyl, C.sub.2 -C.sub.15 alkyl interrupted by one or more O-, N- or S-atoms, optionally substituted C.sub.6 -C.sub.10 aryl, optionally substituted C.sub.7 -C.sub.12 aralkyl, optionally substituted C.sub.7 -C.sub.12 aralkenyl, a heterocyclic residue or a ferrocenyl residue; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and each is a substituent A, hydrogen, OH, O-C.sub.1 -C.sub.15 alkyl, NH.sub.2, NH(C.sub.1 -C.sub.15 alkyl), N(C.sub.1 -C.sub.15 alkyl).sub.2, CO.sub.2 H, CO.sub.2 (C.sub.1 -C.sub.15 alkyl), SO.sub.3 H, P(O) (OH).sub.2 P(O)(OH)(O-C.sub.1 -C.sub.15 alkyl), P(O) (O-C.sub.1 -C.sub.15 alkyl).sub.2, SH, S(C.sub.1 -C.sub.15 alkyl), nitro, cyano, halogen or two of R.sub.1, R.sub.2 R.sub.3 and R.sub.4, together with the carbon atoms to which they are attached, form a C.sub.3 -C.sub.12 cycloalkyl ring or C.sub.6 - or C.sub.10 aryl ring, or one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 together with the carbon atom to which it is attached, and with the group A--C(.dbd.O)--, forms a ring, or R.sub.1 and R.sub.2, R.sub.3 and R.sub.4 form a carbonyl group or a C.dbd.C double bond, provided that A is not optionally substituted C.sub.6 -C.sub.10 aryl when R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are simultaneously hydrogen and provided that R.sub.1 and R.sub.2, or R.sub.3 and R.sub.4, respectively, are not simultaneously both OH or both NH.sub.2 ; and ii) a base selected from a) a cation of Group Ia, Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, VIa, VIIa or VIIIa of the Periodic Table of Elements; b) an amine of formula II which is specified herein.

Coating compositions

Corrosion inhibitors

The present invention provides a corrosion-inhibiting coating composition comprising:

Corrosion-inhibiting coating compositions

A process for inhibiting corrosion involves new compositions which comprise an organic material and, a corrosion inhibitor which is a compound having the formula: ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each is hydrogen, C.sub.1 -C.sub.15 alkyl, C.sub.3 -C.sub.15 alkenyl, C.sub.7 -C.sub.10 phenylalkyl, C.sub.6 -C.sub.18 aryl having 6 or 10 aromatic ring carbon atoms; or C.sub.5 -C.sub.12 cycloalkyl;

Process for inhibiting corrosion

The present invention provides coating compositions comprising

Method of producing an organic, corrosion-resistant surface coating

Compounds of the formula I ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, and R.sup.5 have the meaning given in claim 1 are formed by thermal rearrangement of the isomers of formula V ##STR2## especially in the presence of basic catalysts. The compounds are corrosion inhibitors for organic materials, in particular coating materials and lubricants. In these substrates they also act as antioxidants and light-stabilizers and are very stable to heat.

Processes for preparing phenolic benzothiazole derivatives

Coating compositions containing water-insoluble salts of keto-acids

The present invention provides an aqueous coating composition comprising:

Electrodepositable coating compositions

Compounds of formula I: ##STR1## in which R, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 are as defined in claim 1, are suitable as corrosion inhibitors in surface coatings for metals.

Anticorrosive surface coatings

Compounds of the formula I ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have the meaning given in claim 1 are formed by thermal rearrangement of the isomers of formula V ##STR2## especially in the presence of basic catalysts. The compounds are corrosion inhibitors for organic materials, in particular coating materials and lubricants. In these substrates they also act as antioxidants and light-stabilizers and are very stable to heat.

Phenolic benzothiazole derivatives and their use as corrosion inhibitors

The invention relates to non-aqueous functional fluids which contain at least one compound of formula I ##STR1## wherein X is --O--, --S--, --SO--, --SO.sub.2 --, --C(0)--O-- or --N(R.sup.3)--, in which R.sup.3 is hydrogen or C.sub.1 -C.sub.12 alkyl, R.sup.1 is unsubstituted C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.5 alkyl substituted by one to three hydroxyl groups, R.sup.2 is hydrogen, unsubstituted C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.5 alkyl substituted by one to three hydroxyl groups, with the proviso that at least one of the residues R.sup.1 or R.sup.2 is hydroxy-substituted, and wherein R is C.sub.2 -C.sub.20 -alkyl, a residue --CH.sub.2 --CH(OH)--CH.sub.2 --NR.sup.1 R.sup.2, in which R.sup.1 and R.sup.2 have their previous significance, or R is C.sub.2 -C.sub.18 alkenyl, C.sub.2 -C.sub.3 alkynyl or C.sub.5 -C.sub.12 cycloalkyl, with the proviso that, when X is --O-- or --C(0)--O--, R is branched C.sub.4 -C.sub.20 alkyl, especially a tertiary alkyl group. The compounds of formula I are very suitable as corrosion inhibitors for non-aqueous functional fluids.

Nitrogen-containing additives for non-aqueous functional fluids

The invention relates to non-aqueous functional fluids which contain at least one compound of formula I ##STR1## wherein X is --O--, --S--, --SO--,--SO.sub.2 --, --C(O)--O-- or --N(R.sup.3)--, in which R.sup.3 is hydrogen or C.sub.1 -C.sub.12 alkyl, R.sup.1 is unsubstituted C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.5 alkyl substituted by one to three hydroxyl groups, R.sup.2 is hydrogen, unsubstituted C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.5 alkyl substituted by one to three hydroxyl groups, with the proviso that at least one of the residues R.sup.1 or R.sup.2 is hydroxy-substituted, and wherein R is C.sub.2 -C.sub.20 -alkyl, a residue --CH.sub.2 --CH(OH)--CH.sub.2 --NR.sup.1 R.sup.2, in which R.sup.1 and R.sup.2 have their previous significance, or R is C.sub.2 -C.sub.18 alkenyl, C.sub.2 -C.sub.3 alkynyl or C.sub.5 -C.sub.12 cycloalkyl, with the proviso that, when X is --O-- or --C(O)--O--, R is branched C.sub.4 -C.sub.20 alkyl, especially a tertiary alkyl group. The compounds of formula I are very suitable as corrosion inhibitors for non-aqueous functional fluids.

The invention relates to lubricant compositions comprising

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Sale, United Kingdom

Emyr Phillips