# US 4,395,286 A · Water-based coating oil

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- Number: US 4,395,286 A
- Document ID: US4395286A
- Status: Granted
- Kind: A
- Application number: 06/393,718
- Filed: 1982-06-30
- Granted: 1983-07-26
- Earliest claimed: 1982-06-30
- Assignees: Cincinnati-Vulcan Company
- Inventors: Robert J. Sturwold
- Web page: https://patentgrep.com/patent/US4395286A

## CPC

- C09D 5/08: Anti-corrosive paints
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

A water-based coating composition which upon drying prevents rust and corrosion on metal surfaces, but does not leave a waxy film upon the coated article. The coating composition is a mixture of a monovalent metal or amine, salt of a sulfonic acid, a polybasic fatty acid, an alkanolamide, a water soluble ether and water. The coating oil is a substitute for hydrocarbon-based coating oils and provides the rust protection and corrosion resistance of a hydrocarbon-based coating oil but does not cause a waxy buildup. This water-based coating is also more biodegradable and substantially safer than a hydrocarbon-based system.

## Claims

### Claim 1

An aqueous coating composition for providing corrosion and rust protection for metal surfaces comprising a compatible mixture of the following components:
a sulfonate selected from the group consisting of monovalent metal and amine salts of sulfonic acids;
a polybasic fatty acid;
an alkanolamide; and
a water soluble ether wherein said components are provided in an effective amount to provide rust and corrosion protection for a metal surface and to provide a compatible solution.

### Claim 2 (depends on 1)

An aqueous coating composition as claimed in claim 1 wherein said polybasic fatty acid is selected from the group consisting of C.sub.36 dimer acid, C.sub.54 trimer acid and mixtures of C.sub.36 dimer acid and C.sub.54 trimer acid.

### Claim 3 (depends on 1)

An aqueous coating composition as claimed in claim 1 wherein said water soluble ether comprises an alkyl ether of ethylene glycol.

### Claim 4 (depends on 3)

An aqueous coating composition as claimed in claim 3 wherein said alkyl ether of ethylene glycol comprises monobutyl ether of ethylene glycol.

### Claim 5 (depends on 1)

An aqueous coating composition as claimed in claim 1 wherein said sulfonate is a petroleum sulfonate.

### Claim 6 (depends on 5)

An aqueous coating composition as claimed in claim 5 wherein the petroleum sulfonate is an alkali metal sulfonate.

### Claim 7 (depends on 5)

An aqueous coating composition as claimed in claim 5 wherein the petroleum sulfonate is an amine petroleum sulfonate.

### Claim 8 (depends on 1)

An aqueous coating composition as claimed in claim 1 comprising from about 1 to about 12% polybasic fatty acid.

### Claim 9 (depends on 8)

An aqueous coating composition as claimed in claim 8 comprising from about 3.6 to about 15.6% sulfonate.

### Claim 10 (depends on 1)

An aqueous coating composition as claimed in claim 1 wherein said sulfonate is a dialkyl naphthyl sulfonate.

### Claim 11 (depends on 8)

An aqueous coating composition as claimed in claim 8 wherein said polybasic fatty acid comprises a mixture of C.sub.36 dimer and C.sub.54 trimer acid and wherein said mixture further comprises at least about 75% C.sub.36 dimer acid.

### Claim 12 (depends on 1)

An aqueous coating composition as claimed in claim 1 wherein said alkanol amide is selected from the group consisting essentially of the dialkanolamide of oleic acid, the dialkanolamide of stearic acid and the dialkanolamide of lard oil acid.

### Claim 13

An aqueous coating composition for providing rust and corrosion protection for a metal surface comprising a compatible mixture of the following components:
from about 3.6% to about 7.2% organic sulfonate selected from groups consisting of monovalent metal sulfonates and amine sulfonates;
from about 2% to about 30% alkanolamide;
from about 2% to about 30% water soluble ether; and
from about 1% to about 12% of a mixture of C.sub.36 and C.sub.54 polybasic fatty acids.