# US 9,038,849 B2 · Coating compositions for food and beverage containers

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- Number: US 9,038,849 B2
- Document ID: US9038849B2
- Status: Granted
- Kind: B2
- Application number: 14/536,974
- Filed: 2014-11-10
- Published: 2015-03-05
- Granted: 2015-05-26
- Earliest claimed: 2012-12-07
- Assignees: PPG Industries Ohio, Inc.
- Applicants: PPG Industries Ohio, Inc.
- Inventors: Christopher Most; Robert McVay
- Web page: https://patentgrep.com/patent/US9038849B2

## CPC

- B65D 25/14: Linings or internal coatings (of containers made by folding or erecting blanks made of paper B65D5/56 {; linings for domestic water storage heaters F24H1/183})
- B65D 81/00: Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- C08K 5/053: Polyhydroxylic alcohols
- C08L 33/08: Homopolymers or copolymers of acrylic acid esters
- C09D 133/08: Homopolymers or copolymers of acrylic acid esters
- C09D 165/00: Coating compositions based on macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain (C09D107/00 - C09D157/00, C09D161/00 take precedence); Coating compositions based on derivatives of such polymers
- C09D 183/04: Polysiloxanes
- Y10T 428/1355: Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- 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)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Compositions for coating food or beverage containers comprising a resinous binder and 10 to 30 percent by weight of a polysilicone resin.

## Claims

### Claim 1

A coated article comprising:
(a) a food or beverage container comprising a metal can, and
(b) a coating deposited on the interior portion of the food or beverage container from a composition comprising:
(i) a resinous binder comprising:
(A) a polymer containing reactive functional groups, and
(B) a curing agent that has groups that are reactive with the functional groups of the polymer, and
(ii) a polysilicone resin.

### Claim 2 (depends on 1)

The coated article of claim 1 in which the polymer is an acrylic polymer.

### Claim 3 (depends on 1)

The coated article of claim 1 in which the curing agent comprises an aminoplast or a phenolplast.

### Claim 4 (depends on 1)

The coated article of claim 1 in which the polysilicone resin contains functional groups that are reactive with the functional groups of the curing agent.

### Claim 5 (depends on 1)

The coated article of claim 1 in which the polysilicone resin is an alkyl-phenyl silsesquioxane resin.

### Claim 6 (depends on 1)

The coated article of claim 1 in which the polysilicone resin has a hydroxyl content of 3 to 20 percent by weight based on total weight of the polysilicone resin.

### Claim 7 (depends on 1)

The coated article of claim 1 in which the coating composition is dispersed in aqueous medium.