Lubricating oil composition containing sulfate rust inhibitors

• US 3,954,639 A
• Filed: 03/14/1974
• Issued: 05/04/1976
• Est. Priority Date: 03/14/1974
• Status: Expired due to Term

• Current Assignee: Chevron Research Company (Chevron Corp.)
• Original Assignee: Chevron Research Company (Chevron Corp.)
• Inventors: Liston, Thomas V.
• Primary Examiner(s): Gantz, Delbert E.
• Assistant Examiner(s): Metz, Andrew H.
• Application Number:
  US05/451,258
• Time in Patent Office: 782 Days
• Field of Search: 252/33, 252/33.6, 252/48.2, 252/47.5, 252/48.6, 252/391, 252/18, 260/458
• US Class Current: 508/293
• CPC Class Codes: C08G 65/2606 containing hydroxyl groups
• CPC Class Codes: C08G 65/321 with inorganic compounds
• CPC Class Codes: C08G 65/326 containing sulfur
• CPC Class Codes: C08G 65/33334 acyclic
• CPC Class Codes: C08G 65/338 with inorganic and organic compounds
• CPC Class Codes: C08G 8/28 Chemically modified polycondensates
• CPC Class Codes: C08G 8/36 by etherifying
• CPC Class Codes: C10M 1/08 with additives
• CPC Class Codes: C10M 135/08 containing a sulfur-to-oxygen bond
• CPC Class Codes: C10M 2201/062 Oxides; Hydroxides; Carbonates or bicarbonates
• CPC Class Codes: C10M 2201/063 Peroxides
• CPC Class Codes: C10M 2203/06 Well-defined aromatic compounds
• CPC Class Codes: C10M 2205/02 containing acyclic monomers
• CPC Class Codes: C10M 2205/022 Ethene
• CPC Class Codes: C10M 2205/024 Propene
• CPC Class Codes: C10M 2205/026 Butene
• CPC Class Codes: C10M 2205/028 containing aliphatic monomers having more than four carbon atoms
• CPC Class Codes: C10M 2205/14 Synthetic waxes, e.g. polythene waxes
• CPC Class Codes: C10M 2207/024 having at least two phenol groups but no condensed ring
• CPC Class Codes: C10M 2207/027 Neutral salts thereof
• CPC Class Codes: C10M 2207/028 : Overbased salts thereof
• CPC Class Codes: C10M 2207/04 : Ethers; Acetals; Ortho-esters; Ortho-carbonates
• CPC Class Codes: C10M 2207/281 : of (cyclo)aliphatic monocarboxylic acids
• CPC Class Codes: C10M 2207/282 : of (cyclo)aliphatic oolycarboxylic acids
• CPC Class Codes: C10M 2207/283 : of polyhydroxy compounds
• CPC Class Codes: C10M 2207/286 : of polymerised unsaturated acids
• CPC Class Codes: C10M 2209/00 : Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions oxidised hydrocarbons C10M2205/12
• CPC Class Codes: C10M 2209/02 : Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C10M 2209/10 : Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C10M 2209/103 : Polyethers, i.e. containing di- or higher polyoxyalkylene groups
• CPC Class Codes: C10M 2215/04 : having amino groups bound to acyclic or cycloaliphatic carbon atoms
• CPC Class Codes: C10M 2215/06 : having amino groups bound to carbon atoms of six-membered aromatic rings
• CPC Class Codes: C10M 2215/062 : containing hydroxy groups bound to the aromatic ring
• CPC Class Codes: C10M 2215/086 : Imides
• CPC Class Codes: C10M 2215/26 : Amines
• CPC Class Codes: C10M 2215/28 : Amides; Imides
• CPC Class Codes: C10M 2217/042 : between the nitrogen-containing monomer and an aldehyde or ketone
• CPC Class Codes: C10M 2217/043 : Mannich bases
• CPC Class Codes: C10M 2217/046 : Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
• CPC Class Codes: C10M 2217/06 : Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
• CPC Class Codes: C10M 2219/042 : Sulfate esters
• CPC Class Codes: C10M 2219/044 : Sulfonic acids, Derivatives thereof, e.g. neutral salts
• CPC Class Codes: C10M 2219/046 : Overbasedsulfonic acid salts
• CPC Class Codes: C10M 2219/087 : containing hydroxy groups; Derivatives thereof, e.g. sulfurised phenols
• CPC Class Codes: C10M 2219/088 : Neutral salts
• CPC Class Codes: C10M 2219/089 : Overbased salts
• CPC Class Codes: C10M 2221/00 : Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
• CPC Class Codes: C10M 2221/043 : Polyoxyalkylene ethers with a thioether group
• CPC Class Codes: C10M 2223/04 : Phosphate esters
• CPC Class Codes: C10M 2223/042 : Metal salts thereof
• CPC Class Codes: C10M 2223/045 : Metal containing thio derivatives
• CPC Class Codes: C10M 2223/065 : containing sulfur
• CPC Class Codes: C10M 2225/00 : Organic macromolecular compounds containing phosphorus as ingredients in lubricant compositions
• CPC Class Codes: C10M 2225/02 : Macromolecular compounds from phosphorus-containg monomers, obtained by reactions involving only carbon-to-carbon unsaturated bonds
• CPC Class Codes: C10M 2229/02 : Unspecified siloxanes; Silicones
• CPC Class Codes: C10M 2229/05 : containing atoms other than silicon, hydrogen, oxygen or carbon
• CPC Class Codes: C10N 2010/04 : Groups 2 or 12
• CPC Class Codes: C10N 2030/12 : Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
• CPC Class Codes: C10N 2070/02 : Concentrating of additives

Abstract

A lubricating oil composition of improved rust inhibitory capability contains a small amount of the sulfate of an oxyalkylenated alcohol or phenol having a molecular weight of about 500-5,000.

Claims

1. A lubricating composition of improved rust inhibitory capacity comprising a major amount of an oil of lubricating viscosity and a rust inhibiting amount of the sulfate of a polyoxyalkylenated alcohol or polyoxyalkylenated phenol or the sulfate salt thereof, said sulfate having a molecular weight in the range of from about 500 to about 5,000 and said sulfate salt being prepared by contacting said sulfate with the basic amine compound selected from ammonia, a primary or secondary alkyl monoamine, an alkanol amine, an alkylene polyamine or a succinimide of alkylene polyamine.

8. A lubricating composition according to Claim 1 wherein said sulfate is the mono- or poly-ammonium sulfate, or the sulfate salt of a primary or secondary alkyl monoamine, an alkanol amine, an alkylenepolyamine or a succinimide of alkylenepolyamine.

11. A lubricating composition according to claim 1 wherein said sulfate is present in an amount from 50 ppm to 5,000 ppm.

2. A lubricating composition of improved rust inhibitory capability, comprising a major amount of an oil of lubricating viscosity and a rust inhibiting amount of the sulfate of a polyoxyalkylene alcohol, said sulfate having a molecular weight in the range of from about 500 to about 5,000.

3. A lubricating composition according to claim 2 wherein said polyoxyalkylene alcohol is derived from an alkanol or amino-alkanol of about 1-20 carbon atoms and 0-10 nitrogen atoms.

4. A lubricating composition according to claim 2 wherein said polyoxyalkylene alcohol is derived from a polyhydric alcohol containing from 2 to about 10 hydroxy groups.

5. A lubricating composition according to claim 2 wherein said polyoxyalkylene alcohol is selected from the group consisting of polyoxyalkylene glycol, polyoxyalkylene glycerol and polyoxyalkylene pentaerythritol.

6. A lubricating composition according to claim 2 wherein said sulfate is the sulfate of a polyoxyethylene, polyoxypropylene or polyoxyethylene/polyoxypropylene block copolymer polyol.

7. A lubricating composition according to claim 6 wherein said polyol is a C2-C20 polyol containing from 2 to about 4 hydroxyl groups.

9. A lubricating composition according to claim 2 wherein said sulfate is selected from the group consisting of polyoxyethylene/polyoxypropylene block copolymer glycol ammonium mono- and di-sulfate and polyoxyethylene/polyoxypropylene block copolymer triol, based on glycerol, ammonium mono- and poly-sulfate, wherein said copolymers contain from 10 to 90% oxyethylene units.

12. A lubricating composition according to claim 2 wherein said sulfate is present in an amount from 50 ppm to 5,000 ppm.

10. A lubricating composition of improved rust inhibitory capability, comprising a major amount of an oil of lubricating viscosity, a rust inhibiting amount of the sulfate of a polyoxyalkylenated alcohol or polyoxyalkylenated phenol, or a sulfate salt thereof, wherein said sulfate has a molecular weight in the range of from about 500 to about 5,000, said sulfate salt being prepared by contacting said sulfate with ammonia, a primary or secondary alkyl monoamine, an alkanol amine, an alkylene polyamine or a succinimide of an alkylene polyamine, and sufficient alkaline earth metal carbonate dispersed in said oil to provide an alkalinity value of from 0.5 to 100 mg of KOH/gram.

13. A lubricating composition comprising a major portion of an oil of lubricating viscosity and from 10 to 10,000 parts per million of a sulfated alcohol having a molecular weight in the range of 500 to 5,000, said sulfated alcohol being prepared by the steps comprising (1) reacting (i) an aliphatic alcohol having from 1 to 20 carbon atoms, from 0 to 10 amino groups and from 1 to 10 hydroxy groups with (ii) ethylene oxide or propylene oxide or mixtures thereof, to form a polyoxyalkylenated alcohol, and (2) sulfating said polyoxyalkylenated alcohol by reaction with a sulfating agent selected from sulfur trioxide, sulfuric acid, chlorosulfonic acid, or sulfamic acid, to form said sulfated alcohol;

with the proviso that when chlorosulfonic acid is employed as the sulfating agent, the polyoxyalkylenated alcohol is reacted with sodium hydride prior to its reaction with said chlorosulfonic acid.

14. The lubricating composition defined in claim 13 wherein said sulfated alcohol is (1) further contacted with a basic amine compound selected from ammonia, a primary or secondary alkyl monoamine, an alkanol amine, an alkylenepolyamine or a succinimide of alkylenepolyamine, or (2) further contacted with a basic calcium compound selected from calcium hydroxide or calcium carbonate.

17. The composition defined in claim 13, wherein said aliphatic alcohol is glycol or glycerol.

15. A lubricating composition comprising a major portion of an oil of lubricating viscosity and from 10 to 10,000 parts per million of a sulfated phenol having a molecular weight in the range of 500 to 5,000, said sulfated phenol being prepared by the steps comprising (1) reacting (i) phenol or a C₁ to C₂₀ alkyl phenol with (ii) ethylene oxide or propylene oxide or mixtures thereof to form a polyoxyalkylenated phenol, and (2) sulfating said polyoxyalkylenated phenol by reaction with a sulfating agent selected from sulfur trioxide, sulfuric acid, chlorosulfonic acid or sulfamic acid, to form said sulfated phenol;

with the proviso that when chlorosulfonic acid is employed as the sulfating agent, the polyoxylkylenated phenol is reacted with sodium hydride prior to its reaction with said chlorosulfonic acid.

16. The lubricating composition defined in claim 15, wherein said sulfated phenol is (1) further contacted with a basic amine compound selected from ammonia, primary or secondary alkyl monoamine, an alkanol amine, an alkylenepolyamine or a succinimide of alkylenepolyamine, or (2) further contacted with a basic calcium compound selected from calcium hydroxide or calcium carbonate.

18. The composition defined in claim 15, wherein said sulfating agent is sulfamic acid.