Lubricating oil containing a boron compound and corrosion inhibitors

Claim 2

A lubricating composition comprising a major amount of a lubricating oil and a minor amount of: (A) An extreme pressure anti-wear and friction reducing boron compound of the formula: ##STR6## wherein R 1 is hydrogen, alkyl, cyclic, alicyclic, aryl, alkylaryl, or arylalkyl radicals having from 1 to about 24 carbon atoms, R 2 and R 3 are the same or different, straight or branched carbon chains, cyclic, alicyclic, aryl, alkylaryl or arylalkyl radicals having from 2 to about 20 carbon atoms, y is a number from 1 to 4, and X is either hydrogen, a transition metal having an atomic number between 21 and 30 or a Group IVA metal of the Periodic Table and mixtures thereof; (B) A copper corrosion inhibitor comprising a hydrocarbon polysulfide derivative of 2,5-dimercapto-1,3,4-thiadiazole having the formula ##STR7## wherein R 4 and R 5 are straight or branched chain alkyl, cyclic, alicyclic, aryl, alkylaryl or arylalkyl radicals having from 2 to about 30 carbon atoms and w and z are numbers from 1 to about 8; and (C) a lead corrosion inhibitor comprising terephthalic acid.

Claim 3

The lubricating composition defined in claim 1 wherein the extreme pressure, anti-wear and friction reducing boron compound comprises from about 0.1 to about 15 weight percent of said composition.

Claim 4

The lubricating composition defined in claim 1 wherein R 1 of the boron compound is hydrogen, alkyl, cyclic, alicyclic, aryl, alkylaryl, or arylalkyl having from 1 to about 18 carbon atoms.

Claim 5

The lubricating composition defined in claim 1 wherein R 2 and R 3 of the boron compound are straight or branched carbon chains, alkyl, cyclic, alicyclic, aryl, alkylaryl or arylalkyl radicals having from about 2 to about 10 carbon atoms.

Claim 6

The lubricating composition defined in claim 1 wherein X of the boron compound is scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin or lead or a mixture thereof.

Claim 7

The lubricating composition defined in claim 1 wherein the extreme pressure, anti-wear and friction reducing boron compound is methylaminodiethylate hydrogen borate, ethylaminodiethylate hydrogen borate, propylaminodiethylate hydrogen borate, butylaminodiethylate hydrogen borate, octadecylaminodiethylate hydrogen borate, dodecylaminodiethylate hydrogen borate, cyclohexylaminodiethylate hydrogen borate, phenylaminodiethylate hydrogen borate, oleylaminodiethylate hydrogen borate, cocoaminodiethylate hydrogen borate, tallowaminodiethylate hydrogen borate or dodecylamino di(phenylethylate) hydrogen borate or a mixture thereof.

Claim 8

The lubricating composition defined in claim 6 including a metal derivative of the boron compound wherein the metal is scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin or a mixture thereof.

Claim 9

The lubricating composition defined in claim 1 wherein boron comprises from about 0.5 to about 10 weight percent of said boron compound.

Claim 10

The lubricating composition defined in claim 1 wherein a transition metal or a Group IVA metal comprises from about 1 to about 17 weight percent of said boron compound.

Claim 11

The lubricating composition defined in claim 1 wherein R 4 and R 5 of the copper corrosion inhibitor are straight or branched chain alkyl, cyclic, alicyclic, aryl, alkylaryl or arylalkyl radicals having from 4 to about 16 carbon atoms and w and z are numbers from 1 to about 4.

Claim 12

The lubricating composition defined in claim 1 wherein the copper corrosion inhibitor comprises from 0.001 to about 5 weight percent of said composition.

Claim 13

The lubricating composition defined in claim 1 wherein the copper corrosion inhibitor is 1,3,4-thiadiazole-2,5-bis (octyldisulfide); 1,3,4-thiadiazole-2,5 bis(octytrisulfide); 1,3,4-thiadiazole-2,5 bis (octyltetrasulfide); 1,3,4-thiadiazole-2,5 bis (dodecyldisulfide); 1,3,4-thiadiazole-2,5 bis (dodecyltrisulfide); 1,3,4-thiadiazole -2,5 bis (dodecyltetrasulfide); 2-laurylldithia-5-thiaalpha-methylstyryl-1,3,4 thiadiazole or 2-lauryltrithia-5-thiaalpha-methylstyryl-1,3,4 thiadiazole or a mixture thereof.

Claim 14

The lubricating composition defined in claim 1 comprising from 0.001 to about 1 weight percent of terephthalic acid as a lead corrosion inhibitor.

Claim 15

A lubricating composition comprising a major amount of a lubricating oil and a minor amount of: (A) An extreme pressure, anti-wear and friction reducing boron compound selected from methylaminodiethylate hydrogen borate, ethylaminodiethylate hydrogen borate, propylaminodiethylate hydrogen borate, butylaminodiethylate hydrogen borate, octadecylaminodiethylate hydrogen borate, dodecylaminodiethylate hydrogen borate, cyclohexylaminodiethylate hydrogen borate, phenylaminodiethylate hydrogen borate, oleylaminodiethylate hydrogen borate, cocoaminodiethylate hydrogen borate, tallowaminodiethylate hydrogen borate, or dodecyl di(phenyl ethylate) hydrogen borate or a mixture thereof; (B) A copper corrosion inhibitor comprising a hydrocarbon polysulfide derivative of 2,5-dimercapto-1,3,4-thiadiazole selected from 1,3,4-thiaidazole-2,5-bis (octyldisulfide); 1,3,4-thiadiazole-2,5 bis(octytrisulfide); 1,3,4-thiadiazole-2,5 bis (octyltetrasulfide); 1,3,4-thiadiazole-2,5 bis (dodecyldisulfide); 1,3,4-thiadiazole-2,5 bis (dodecyltrisulfide); 1,3,4-thiadiazole -2,5 bis (dodecyltetrasulfide; 2-lauryldithia-5-thiaalpha-methylstyryl-1,3,4 thiadiazole or 2-lauryltrithia-5-thiaalpha-methylstyryl-1,3,4 thiadiazole or a mixture thereof; (C) A lead corrosion inhibitor comprising terephthalic acid.

Claim 16

A lubricating composition comprising a major amount of a lubricating oil and a minor amount of: (A) An extreme pressure, anti-wear and friction reducing boron compound selected from methylaminodiethylate hydrogen borate, ethylaminodiethylate hydrogen borate, propylaminodiethylate hydrogen borate, butylaminodiethylate hydrogen borate, octadecylaminodiethylate hydrogen borate, dodecylaminodiethylate hydrogen borate, cyclohexylaminodiethylate hydrogen borate, phenylaminodiethylate hydrogen borate, oleylaminodiethylate hydrogen borate, cocoaminodiethylate hydrogen borate, tallowaminodiethylate hydrogen borate, or dodecyl di(phenyl ethylate) hydrogen borate or a mixture thereof; (B) A copper corrosion inhibitor comprising a hydrocarbon polysulfide derivative of 2,5-dimercapto-1,3,4-thiadiazole selected from 1,3,4-thiaidazole-2,5-bis (octyldisulfide); 1,3,4-thiadiazole-2,5 bis(octytrisulfide); 1,3,4-thiadiazole-2,5 bis (octyltetrasulfide); 1,3,4-thiadiazole-2,5 bis (dodecyldisulfide); 1,3,4-thiadiazole-2,5 bis (dodecyltrisulfide); 1,3,4-thiadiazole -2,5 bis (dodecyltetrasulfide; 2-lauryldithia-5-thiaalpha-methylstyryl-1,3,4 thiadiazole or 2-lauryltrithia-5-thiaalpha-methylstyryl-1,3,4 thiadiazole or a mixture thereof; (C) A lead corrosion inhibitor comprising terephthalic acid.

Claim 17

The lubricating composition defined in claim 14 wherein the boron compound includes a transition metal having an atomic number of from 21 to 30 or a Group IVA metal.

Claim 18

The lubricating composition defined in claim 15 wherein the transition metal or Group IVA metal is scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, tin or lead or a mixture thereof.

Claim 19

The lubricating composition defined in claim 15 wherein the transition metal or Group IVA metal comprises from about 5 to about 10 weight percent of said compound.

Claim 20

The lubricating composition defined in claim 14 wherein the boron compound comprises from about 0.5 to about 10 weight percent of said composition.

Claim 21

The lubricating composition defined in claim 14 wherein the copper corrosion inhibitor comprises from about 0.005 to about 2.5 weight percent of said composition.

Claim 22

The lubricating composition defined in claim 14 wherein the lead corrosion inhibitor comprises from about 0.01 to about 0.05 weight percent of said composition.

Claim 23

A lubricating composition comprising a major amount of a lubricating oil and a minor amount of: (A) from about 0.5 to about 10 weight percent of an extreme pressure, anti-wear and friction reducing boron compound selected from methylaminodiethylate hydrogen borate, phenylaminodiethylate hydrogen borate, octadecylaminodiethylate hydrogen borate, cocoaminodiethylate hydrogen borate, tallowaminodiethylate hydrogen borate, or dodecylamino di(phenylethylate) hydrogen borate or a mixture thereof; (B) from about 0.005 to about 2.5 weight percent of a copper corrosion inhibitor selected from the group consisting of 1,3,4-thiadiazole-2,5-bis (octyldisulfide); 1,3,4-thiadiazole-2,5 bis(octytrisulfide); 1,3,4-thiadiazole-2,5 bis (octyltetrasulfide); 1,3,4-thiadiazole-2,5 bis (dodecyldisulfide); and 1,3,4-thiadiazole-2,5 bis (dodecyltrisulfide), and mixtures thereof; (C) from about 0.01 to about 0.05 weight percent of a lead corrosion inhibitor comprising terephthalic acid.

Claim 24

A lubricating composition comprising a major amount of a lubricating oil and a minor amount of: (A) from about 0.5 to about 10 weight percent of an extreme pressure, anti-wear and friction reducing boron compound selected from methylaminodiethylate hydrogen borate, phenylaminodiethylate hydrogen borate, octadecylaminodiethylate hydrogen borate, cocoaminodiethylate hydrogen borate, tallowaminodiethylate hydrogen borate, or dodecylamino di(phenylethylate) hydrogen borate or a mixture thereof; (B) from about 0.005 to about 2.5 weight percent of a copper corrosion inhibitor selected from the group consisting of 1,3,4-thiadiazole-2,5-bis (octyldisulfide); 1,3,4-thiadiazole-2,5 bis(octytrisulfide); 1,3,4-thiadiazole-2,5 bis (octyltetrasulfide); 1,3,4-thiadiazole-2,5 bis (dodecyldisulfide); and 1,3,4-thiadiazole-2,5 bis (dodecyltrisulfide), and mixtures thereof; (C) from about 0.01 to about 0.05 weight percent of a lead corrosion inhibitor comprising terephthalic acid.

Claim 25

The lubricating composition defined in claim 21 wherein the boron compound includes from about 5 to about 10 weight percent of a metal selected from the group consisting of nickel, zinc, copper and lead and mixtures thereof.

Claim 26

A lubricating composition comprising a major amount of a lubricating oil and from about 0.5 to about 10 weight percent of cocoamindiethylate hydrogen borate, from about 0.005 to about 2.5 weight percent of 1,3,4-thiadiaozole-2,5-bis (octyldisulfide), and from about 0.001 to about 1 weight percent of terephthalic acid.

Claim 27

A lubricating composition comprising a major amount of a lubricating oil and from about 0.5 to about 10 weight percent of cocoamindiethylate hydrogen borate, from about 0.005 to about 2.5 weight percent of 1,3,4-thiadiaozole-2,5-bis (octyldisulfide), and from about 0.001 to about 1 weight percent of terephthalic acid.

Claim 28

A lubricating composition comprising a major amount of a lubricating oil and from about 0.5 to about 10 weight percent of dodecylamino di(phenyl ethylate) hydrogen borate, from about 0.005 to about 2.5 weight percent of 1,3,4-thiadiazole-2,5-bis (octyldisulfide), and from about 0.001 to about 1 weight percent of terephthalic acid.

Claim 29

A lubricating composition comprising a major amount of a lubricating oil and from about 0.5 to about 10 weight percent of dodecylamino di(phenyl ethylate) hydrogen borate, from about 0.005 to about 2.5 weight percent of 1,3,4-thiadiazole-2,5-bis (octyldisulfide), and from about 0.001 to about 1 weight percent of terephthalic acid.