# US 10,767,076 B2 · Water-reducible coating composition

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- Number: US 10,767,076 B2
- Document ID: US10767076B2
- Status: Granted
- Kind: B2
- Application number: 16/412,005
- Filed: 2019-05-14
- Published: 2019-09-05
- Granted: 2020-09-08
- Earliest claimed: 2014-01-27
- Assignees: Swimc LLC
- Applicants: Swimc LLC
- Inventors: Thomas J. Melnyk; Michael A. Bauer
- Web page: https://patentgrep.com/patent/US10767076B2

## CPC

- C09D 167/08: Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
- 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

The present description provides a water-reducible or water-dispersible coating system that can be used to form a durable, corrosion-resistant protective coating on a wide range of substrates. The coating system includes an alkyd resin prepared from a polyester feedstock that includes post-consumer recycled PET and a waste cooking oil feedstock. Methods for preparing the coating system and articles coated with the coating system are also described.

## Claims

### Claim 1

A coated article, comprising;
at least a portion of an exposed surface of a metal substrate; and
a coating system applied to at least the exposed surface, wherein the coating system comprises:
a water-reducible alkyd resin comprising the reaction product of
about 65 to 75 wt % of a polyester feedstock comprising
about 20 to 80% by weight of polyethylene terephthalate;
about 1 to 10% by weight of a hydroxyl-functional compound; and
about 1 to 20% by weight of a carboxyl-functional compound, based on the total weight of the polyester feedstock; and
about 25 to 35 wt % of a waste cooking oil feedstock comprising yellow grease, brown grease, or mixtures thereof.

### Claim 2 (depends on 1)

The article of claim 1, wherein the polyethylene terephthalate is derived from post-consumer waste material.

### Claim 3 (depends on 1)

The article of claim 1, wherein the hydroxy-functional compound is selected from ethylene glycol, diethylene glycol, triethylene glycol, cyclohexanedimethanol, propylene glycol, 1,2-propylene glycol, 1,3-propane diol, 1,2-butylene glycol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, 1,5-pentanediol, 1,6-hexanediol, glycerol, trimethylolpropane, trimethylolethane, pentaerythritol, erythritol, derivatives thereof, or combinations thereof.

### Claim 4 (depends on 1)

The article of claim 1, wherein the carboxyl-functional compound is selected from trimellitic acid, trimellitic anhydride, maleic acid, maleic anhydride, fumaric acid, isophthalic acid, and combinations thereof.

### Claim 5 (depends on 1)

The article of claim 1, wherein the hydroxy-functional compound is pentaerythritol.

### Claim 6 (depends on 1)

The article of claim 1, wherein the carboxyl-functional compound is trimellitic acid.

### Claim 7 (depends on 1)

The article of claim 1, wherein the metal substrate comprises at least a part of an underbody of a transportation vehicle or storage unit.

### Claim 8 (depends on 1)

The article of claim 1, wherein the metal substrate comprises at least a portion of an underbody of an intermodal shipping container.

### Claim 9 (depends on 1)

The article of claim 1, wherein the metal substrate is an intermodal shipping container.

### Claim 10 (depends on 1)

The article of claim 1, wherein the polyester feedstock further includes about 1 to 10 wt % linseed oil.

### Claim 11 (depends on 1)

The article of claim 1, wherein the alkyd resin composition has an acid number of about 40 to about 70.

### Claim 12 (depends on 1)

The article of claim 1, wherein the alkyd resin composition has a molecular weight (Mn) of 1000 to 10,000.