US 4,178,253 A · Corrosion inhibited lubricant compositions

Abstract

A lubricating oil composition comprising 0.001% to 10%, based on the total lubricating composition, of a compound of formula I: ##STR1## wherein x is an integer from 1 to 25; R, R.sup.1 and R" are the same or different and each is hydrogen, an optionally substituted straight- or branched-chain alkyl residue having from 1 to 20 carbon atoms, an alkenyl or alkynyl residue having from 2 to 12 carbon atoms, an optionally substituted cycloalkyl residue having from 3 to 12 carbon atoms, an optionally substituted aryl residue having from 6 to 10 carbon atoms, an optionally substituted aralkenyl or aralkynyl residue each having from 8 to 12 carbon atoms, an optionally substituted aralkyl residue having from 7 to 20 carbon atoms or an optionally substituted heterocyclic residue having from 3 to 10 ring members, an alkylene residue having from 2 to 12 carbon atoms, a cycloalkylene residue having from 5 to 12 carbon atoms or an arylene residue having from 6 to 10 carbon atoms; or R is the group -(S).sub.x R" and when R and R' are different from R", R" can also be one of the following residues: (a) a residue of formula: ##STR2## wherein Z is the atom grouping necessary to complete, with the carbon atom, a heterocyclic ring, or (b) a quaternary ammonium cation derived from the reaction of a compound of formula I, wherein R" is hydrogen, with ammonia or an amine; and when R" is hydrogen, R or R' can also be an organic residue which links two triazole residues of formula I, wherein R' is in the 4-position.

Claims6

Dependent claims

A lubricant composition comprising a major proportion of an oil of lubricating viscosity and from 0.001 to 10% by weight, based on the total composition, of a compound of the formula ##STR7## wherein X is an integer from 1 to 25;

R, R' and R" are the same or different and each is hydrogen, a straight- or branched-chain alkyl having 1 to 20 carbon atoms;
or said alkyl substituted by one or more halogen atoms or alkoxy groups having 1 to 12 carbon atoms;
a straight- or branched-chain alkenyl having 2 to 12 carbon atoms;
a straight- or branched-chain alkynyl having 2 to 12 carbon atoms;
cycloalkyl having 3 to 12 carbon atoms;
aryl having 6 to 10 carbon atoms;
aralkenyl having 8 to 12 carbon atoms;
aralkynyl having 8 to 12 carbon atoms;
aralkyl having 7 to 20 carbon atoms;
piperidyl, pyridyl;
furyl;
or said cycloalkyl, aryl, aralkenyl, aralkynyl, aralkyl, piperidyl, pyridyl or furyl substituted by one or more straight or branched alkyl having from 1 to 12 carbon atoms which alkyl groups may be substituted by halogen atoms, by alkoxy having 1 to 12 carbon atoms, by alkylthio having 1 to 18 carbon atoms, by alkylamino having 1 to 24 carbon atoms, by dialkylamino having 1 to 24 carbon atoms, by hydroxy, by cyano or by mixtures of said substituents;
or
R is the group--(S).sub.x R";
or when R and R' are different from R",
(a) R" can be ##STR8## (b) R" is the ammonium cation or a quaternary ammonium cation having 2 to 22 carbon atoms;
R.sup.2 is ##STR9## R.sup.3 is ##STR10## or R.sup.2 and R.sup.4 are alkylene having 1 to 12 carbon atoms;
cycloalkylene having 5 to 12 carbon atoms, arylene having 6 to 10 carbon atoms, furandiyl or thiophenediyl.

15 more elements

Dependencies are inferred from the claim text.

Corrosion inhibited lubricant compositions

Life of this patent

Corrosion inhibited lubricant compositions

Life of this patent

Abstract

Claims6