# US 4,396,515 A · Coating oil compositions

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- Number: US 4,396,515 A
- Document ID: US4396515A
- Status: Granted
- Kind: A
- Application number: 06/281,597
- Filed: 1981-07-09
- Granted: 1983-08-02
- Earliest claimed: 1980-03-28
- Assignees: Cincinnati-Vulcan Company
- Inventors: Robert J. Sturwold
- Web page: https://patentgrep.com/patent/US4396515A

## CPC

- C10M 169/04: Mixtures of base-materials and additives
- C10M 101/02: Petroleum fractions
- C10M 129/42: polycarboxylic
- C10M 135/10: Sulfonic acids or derivatives thereof
- C23F 15/00: Other methods of preventing corrosion or incrustation
- C10M 2203/10: Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M 2203/1006: used as base material
- C10M 2203/102: Aliphatic fractions
- C10M 2203/1025: used as base material
- C10M 2203/1045: used as base material
- C10M 2203/1065: used as base material
- C10M 2203/1085: used as base material
- C10M 2207/123: polycarboxylic
- C10M 2207/127: polycarboxylic
- C10M 2207/129: having hydrocarbon chains of thirty or more carbon atoms
- C10M 2207/22: Acids obtained from polymerised unsaturated acids
- C10M 2219/044: Sulfonic acids, Derivatives thereof, e.g. neutral salts
- C10N 2040/20: Metal working
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- C23F: NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE (working metal by laser beams B23K26/00; desurfacing by applying flames B23K7/00; working of metal by electro-erosion B23H; producing decorative effects by removing surface material, e.g. by engraving, by etching, B44C1/22; electrolytic etching or polishing C25F); INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

Useful oil compositions for coating ferrous and non-ferrous metals are provided. The coating oils are blends of a petroleum sulfonate, polymeric fatty acid and hydrocarbon oil.

## Claims

### Claim 1

A coating oil composition consisting of (a) 1 to 15% polymeric fatty acid obtained from the polymerization of unsaturated C.sub.16-20 monocarboxylic acids and and containing at least 60% C.sub.36 dimer acid, (b) 1 to 15% oil-soluble Group IA alkali metal petroleum sulfonate and (c) 70 to 98% inert and substantially wax-free naphthenic or paraffinic hydrocarbon oil having a 100.degree. F. kinematic viscosity from 0.5 to 6 centistokes.

### Claim 2 (depends on 1)

The coating oil of claim 1 wherein the Group IA alkali metal petroleum sulfonate is a sodium petroleum sulfonate.

### Claim 3 (depends on 1)

The coating oil of claim 1 wherein the polymeric fatty acid contains 75% or more C.sub.36 dimer acid and has an acid value of 180 to 215 and saponification value of 180 to 215.

### Claim 4 (depends on 1)

The coating oil of claim 1 containing 2 to 10% polymeric fatty acid, 2 to 12% sodium petroleum sulfonate and 78 to 96% hydrocarbon oil.

### Claim 5 (depends on 2, 3, 4)

The coating oil of claims 2, 3 or 4 wherein the hydrocarbon oil has a 100.degree. F. kinematic viscosity of 1 to 5 centistokes and the viscosity (100.degree. F. kinematic) of the coating oil is less than 8 centistokes.

### Claim 6 (depends on 5)

The coating oil of claim 5 wherein the hydrocarbon oil is Stoddard solvent or a blend of hydrocarbon oils wherein Stoddard solvent is the major component oil.

### Claim 7

A method of protecting a metal surface which comprises treating a metal with a coating oil having a 100.degree. F. kinematic viscosity of less than 8 centistokes and consisting of (a) 1 to 15% polymeric fatty acid obtained from the polymerization of unsaturated C.sub.16-20 monocarboxylic acids and containing at least 60% C.sub.36 dimer acid, (b) 1 to 15% oil-soluble Group IA alkali metal petroleum sulfonate and (c) 70 to 98% inert and substantially wax-free naphthenic or paraffinic hydrocarbon oil having a 100.degree. F. kinematic viscosity of 0.5 to 6 centistokes so as to obtain a continuous protective coating on the exposed metal surfaces.

### Claim 8 (depends on 7)

The method of claim 7 wherein the Group IA alkali metal petroleum sulfonate is a sodium petroleum sulfonate.

### Claim 9 (depends on 8)

The method of claim 8 wherein the hydrocarbon oil is Stoddard solvent or a hydrocarbon blend wherein Stoddard solvent is the major component oil and substantially all of said hydrocarbon oil is evaporated.

### Claim 10 (depends on 9)

The method of claim 9 wherein the coating oil is applied to rolled metal sheet.

### Claim 11 (depends on 10)

The method of claim 10 wherein the coating oil is sprayed on the metal surface.

### Claim 12

A metal article having applied to its surface a coating oil consisting of (a) 1 to 15% polymeric fatty acid obtained from the polymerization of unsaturated C.sub.16-20 monocarboxylic acids and containing at least 60% C.sub.36 dimer acid, (b) 1 to 15% oil-soluble Group IA alkali metal petroleum sulfonate and (c) 70 to 98% inert and substantially wax-free naphthenic or paraffinic hydrocarbon oil having a 100.degree. F. kinematic viscosity from 0.5 to 6 centistokes.

### Claim 13 (depends on 12)

The metal article of claim 12 wherein the hydrocarbon oil is Stoddard solvent or a hydrocarbon oil blend wherein Stoddard solvent is the major component oil and all or a portion of said hydrocarbon oil is evaporated to provide a substantially continuous protective film resistant to moisture and acid vapors.

### Claim 14 (depends on 13)

The metal article of claim 13 wherein the Group IA alkali metal petroleum sulfonate is a sodium petroleum sulfonate.

### Claim 15 (depends on 14)

The metal article of claim 14 wherein the coating oil contains 2 to 10% polymeric fatty acid containing 75% or more C.sub.36 dimer acid, 2 to 12% sodium petroleum sulfonate and 78 to 96% hydrocarbon oil.