US 5,338,471 AGranted

Pour point depressants for industrial lubricants containing mixtures of fatty acid esters and vegetable oils

AssigneeThe Lubrizol Corporation

InventorKasturi Lal

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Abstract

This invention relates to a composition containing the combination of: (A) at least one vegetable or synthetic triglyceride, (B) esters from the transesterification of at least one animal or vegetable oil triglyceride, (C) a pour point depressant, and (D) a performance additive. The composition may optionally contain (E) other oils.

Claims69

Dependent claims

A composition, comprising;

(A) at least one vegetable or synthetic triglyceride oil of the formula ##STR44## wherein R.sup.1, R.sup.2 and R.sup.3 are aliphatic hydrocarbyl groups having at least 60 percent monounsaturated character and containing from about 6 to about 24 carbon atoms;
(B) esters from the transesterification of at least one animal or vegetable oil triglyceride of the formula ##STR45## with an alcohol or phenol R.sup.4 OH wherein R.sup.1, R.sup.2 and R.sup.3 are aliphatic groups containing from about 6 to about 24 carbon atoms and R.sup.4 is an aliphatic group containing from 1 to about 10 carbon atoms or an aromatic or substituted aromatic group containing from 6 to about 50 carbon atoms;
(C) a pour point depressant;
(D) at least one performance additive selected from the group consisting of
(1) at least one alkyl phenol of the formula ##STR46## wherein R.sup.11 is an alkyl group containing from 1 up to about 24 carbon atoms and a is an integer of from 1 up to 5;
(2) a benzotriazole of the formula ##STR47## wherein R.sup.12 is hydrogen or an alkyl group of 1 up to about 24 carbon atoms;
(3) a phosphatide of the formula ##STR48## wherein R.sup.13 and R.sup.14 are aliphatic hydrocarbyl groups containing from 8 to about 24 carbon atoms, and G is selected from the group consisting of hydrogen;
##STR49## (4) a thiocarbamate of the formula ##STR50## wherein R.sup.15 is an alkyl group containing from 1 to about 24 carbon atoms, phenyl or alkyl phenyl wherein the alkyl group contains from 1 to about 18 carbon atoms, R.sup.16 and R.sup.17 are hydrogen or an alkyl group containing from 1 to about 6 carbon atoms, with the proviso that R.sup.16 and R.sup.17 are not both hydrogen;
(5) citric acid and derivatives of citric acid of the formula ##STR51## wherein R.sup.18, R.sup.19 and R.sup.20 are independently hydrogen or aliphatic hydrocarbyl groups containing from 1 to about 12 carbon atoms, or an aromatic or substituted aromatic groups containing from 6 to about 50 carbon atoms with the proviso that at least one of R.sup.17, R.sup.18 and R.sup.19 is an aliphatic hydrocarbyl group;
(6) a coupled phosphorus-containing amide of the formula ##STR52## wherein X.sup.1, X.sup.2 and X.sup.3 independently is oxygen or sulfur;
wherein R.sup.21 and R.sup.22, independently is a hydrocarbyl, a hydrocarbyl-based oxy, the hydrocarbyl portions of which contain 6 to about 22 carbon atoms, or a hydrocarbyl-based thio, having from 4 to about 34 carbon atoms;
wherein R.sup.23, R.sup.24, R.sup.25 and R.sup.26, independently is hydrogen, or an alkyl having from 1 to about 22 carbon atoms, or an aromatic, an alkyl-substituted aromatic or an aromatic-substituted alkyl having from 6 to about 34 atoms;
wherein n is zero or 1;
wherein n' is 2 or 3
wherein R.sup.27 is hydrogen;
and when n' is 2, R.sup.28 is selected from the group consisting of ##STR53## wherein R is an alkyl moiety, in the form of alkylene or alkylidene containing from 1 to 12 carbon atoms and R' is an alkyl moiety, alkylene, alkylidene or carboxyl containing 1 to 60 carbon atoms and when n' is 3, R.sup.27 is ##STR54## (7) a methylacrylate derivative formed by the reaction of equal molar amounts of a phosphorus acid of the formula ##STR55## with methylacrylate wherein X.sup.1 and X.sup.2 are oxygen or sulfur and R.sup.29 and R.sup.30 are each independently a hydrocarbyl, a hydrocarbyl-based thio or preferably a hydrocarbyl-based oxy group wherein the hydrocarbyl portion contains from 1 to about 30 carbon atoms and remaining acidity is neutralized with 1 mole propylene oxide for each 20-25 moles of phosphorus acid;
(8) a metal overbased composition;
(9) a carboxylic dispersant composition;
(10) a nitrogen-containing organic composition comprising
(a) an acylated, nitrogen containing compound having a substituent of at least 10 aliphatic carbon atoms made by reacting a carboxylic acylating agent with at least one amino compound containing at least one --NH group, said acylating agent being linked to said amino compound through an imido, amido, amidine or acyloxy ammonium linkage;
and
(b) at least one amino phenol of the general formula ##STR56## wherein R.sup.37 is a substantially saturated, hydrocarbon-based substituent of at least 10 aliphatic carbon atoms;
a, b and c are each independently an integer of one up to three times the number of aromatic nuclei present in Ar with the proviso that the sum of a, b and c does not exceed the unsaturated valences of Ar;
and Ar is an aromatic moiety having 0-3 optional substituents selected from the group consisting of lower alkyl, lower alkoxyl, nitro, halo or combinations of two or more of said substituents;
(11) a zinc salt of the formula ##STR57## wherein R.sup.43 and R.sup.44 are independently hydrocarbyl groups containing from about 3 to about 20 carbon atoms;
(12) a sulfurized composition wherein the sulfurized composition is a sulfurized olefin prepared by reacting an olefin with sulfur or sulfur halide complex;
(13) at least one viscosity index improver;
and
(14) at least one aromatic amine of the formula ##STR58## wherein R.sup.51 is ##STR59## and R.sup.52 and R.sup.53 are independently a hydrogen or an alkyl group containing from 1 up to about 24 carbon atoms;
and optionally
(E) at least one oil selected from the group consisting of
(1) synthetic ester base oil comprising the reaction of a monocarboxylic acid of the formula
R.sup.54 COOH
or a dicarboxylic acid of the formula ##STR60## with an alcohol of the formula
R.sup.56 (OH).sub.n
wherein R.sup.54 is a hydrocarbyl group containing from about 4 to about 24 carbon atoms, R.sup.55 is hydrogen or a hydrocarbyl group containing from about 4 to about 50 carbon atoms, R.sup.56 is a hydrocarbyl group containing from 1 to about 24 carbon atoms, m is an integer of from 0 to about 6 and n is an integer of from 1 to about 6;
(2) a mineral oil;
(3) a polyalphaolefin;
and
(4) a vegetable oil.

37 more elements

Dependencies are inferred from the claim text.

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Abstract

A composition, comprising;

(A) at least one vegetable or synthetic triglyceride oil of the formula ##STR44## wherein R.sup.1, R.sup.2 and R.sup.3 are aliphatic hydrocarbyl groups having at least 60 percent monounsaturated character and containing from about 6 to about 24 carbon atoms;
(B) esters from the transesterification of at least one animal or vegetable oil triglyceride of the formula ##STR45## with an alcohol or phenol R.sup.4 OH wherein R.sup.1, R.sup.2 and R.sup.3 are aliphatic groups containing from about 6 to about 24 carbon atoms and R.sup.4 is an aliphatic group containing from 1 to about 10 carbon atoms or an aromatic or substituted aromatic group containing from 6 to about 50 carbon atoms;
(C) a pour point depressant;
(D) at least one performance additive selected from the group consisting of
(1) at least one alkyl phenol of the formula ##STR46## wherein R.sup.11 is an alkyl group containing from 1 up to about 24 carbon atoms and a is an integer of from 1 up to 5;
(2) a benzotriazole of the formula ##STR47## wherein R.sup.12 is hydrogen or an alkyl group of 1 up to about 24 carbon atoms;
(3) a phosphatide of the formula ##STR48## wherein R.sup.13 and R.sup.14 are aliphatic hydrocarbyl groups containing from 8 to about 24 carbon atoms, and G is selected from the group consisting of hydrogen;
##STR49## (4) a thiocarbamate of the formula ##STR50## wherein R.sup.15 is an alkyl group containing from 1 to about 24 carbon atoms, phenyl or alkyl phenyl wherein the alkyl group contains from 1 to about 18 carbon atoms, R.sup.16 and R.sup.17 are hydrogen or an alkyl group containing from 1 to about 6 carbon atoms, with the proviso that R.sup.16 and R.sup.17 are not both hydrogen;
(5) citric acid and derivatives of citric acid of the formula ##STR51## wherein R.sup.18, R.sup.19 and R.sup.20 are independently hydrogen or aliphatic hydrocarbyl groups containing from 1 to about 12 carbon atoms, or an aromatic or substituted aromatic groups containing from 6 to about 50 carbon atoms with the proviso that at least one of R.sup.17, R.sup.18 and R.sup.19 is an aliphatic hydrocarbyl group;
(6) a coupled phosphorus-containing amide of the formula ##STR52## wherein X.sup.1, X.sup.2 and X.sup.3 independently is oxygen or sulfur;
wherein R.sup.21 and R.sup.22, independently is a hydrocarbyl, a hydrocarbyl-based oxy, the hydrocarbyl portions of which contain 6 to about 22 carbon atoms, or a hydrocarbyl-based thio, having from 4 to about 34 carbon atoms;
wherein R.sup.23, R.sup.24, R.sup.25 and R.sup.26, independently is hydrogen, or an alkyl having from 1 to about 22 carbon atoms, or an aromatic, an alkyl-substituted aromatic or an aromatic-substituted alkyl having from 6 to about 34 atoms;
wherein n is zero or 1;
wherein n' is 2 or 3
wherein R.sup.27 is hydrogen;
and when n' is 2, R.sup.28 is selected from the group consisting of ##STR53## wherein R is an alkyl moiety, in the form of alkylene or alkylidene containing from 1 to 12 carbon atoms and R' is an alkyl moiety, alkylene, alkylidene or carboxyl containing 1 to 60 carbon atoms and when n' is 3, R.sup.27 is ##STR54## (7) a methylacrylate derivative formed by the reaction of equal molar amounts of a phosphorus acid of the formula ##STR55## with methylacrylate wherein X.sup.1 and X.sup.2 are oxygen or sulfur and R.sup.29 and R.sup.30 are each independently a hydrocarbyl, a hydrocarbyl-based thio or preferably a hydrocarbyl-based oxy group wherein the hydrocarbyl portion contains from 1 to about 30 carbon atoms and remaining acidity is neutralized with 1 mole propylene oxide for each 20-25 moles of phosphorus acid;
(8) a metal overbased composition;
(9) a carboxylic dispersant composition;
(10) a nitrogen-containing organic composition comprising
(a) an acylated, nitrogen containing compound having a substituent of at least 10 aliphatic carbon atoms made by reacting a carboxylic acylating agent with at least one amino compound containing at least one --NH group, said acylating agent being linked to said amino compound through an imido, amido, amidine or acyloxy ammonium linkage;
and
(b) at least one amino phenol of the general formula ##STR56## wherein R.sup.37 is a substantially saturated, hydrocarbon-based substituent of at least 10 aliphatic carbon atoms;
a, b and c are each independently an integer of one up to three times the number of aromatic nuclei present in Ar with the proviso that the sum of a, b and c does not exceed the unsaturated valences of Ar;
and Ar is an aromatic moiety having 0-3 optional substituents selected from the group consisting of lower alkyl, lower alkoxyl, nitro, halo or combinations of two or more of said substituents;
(11) a zinc salt of the formula ##STR57## wherein R.sup.43 and R.sup.44 are independently hydrocarbyl groups containing from about 3 to about 20 carbon atoms;
(12) a sulfurized composition wherein the sulfurized composition is a sulfurized olefin prepared by reacting an olefin with sulfur or sulfur halide complex;
(13) at least one viscosity index improver;
and
(14) at least one aromatic amine of the formula ##STR58## wherein R.sup.51 is ##STR59## and R.sup.52 and R.sup.53 are independently a hydrogen or an alkyl group containing from 1 up to about 24 carbon atoms;
and optionally
(E) at least one oil selected from the group consisting of
(1) synthetic ester base oil comprising the reaction of a monocarboxylic acid of the formula
R.sup.54 COOH
or a dicarboxylic acid of the formula ##STR60## with an alcohol of the formula
R.sup.56 (OH).sub.n
wherein R.sup.54 is a hydrocarbyl group containing from about 4 to about 24 carbon atoms, R.sup.55 is hydrogen or a hydrocarbyl group containing from about 4 to about 50 carbon atoms, R.sup.56 is a hydrocarbyl group containing from 1 to about 24 carbon atoms, m is an integer of from 0 to about 6 and n is an integer of from 1 to about 6;
(2) a mineral oil;
(3) a polyalphaolefin;
and
(4) a vegetable oil.

37 more elements