# US 4,393,121 A · Polyester coil coating

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- Number: US 4,393,121 A
- Document ID: US4393121A
- Status: Granted
- Kind: A
- Application number: 06/323,518
- Filed: 1981-11-23
- Granted: 1983-07-12
- Earliest claimed: 1981-11-23
- Assignees: Mobil Oil Corporation
- Inventors: Michael A. Tobias; Conrad L. Lynch
- Web page: https://patentgrep.com/patent/US4393121A

## CPC

- H01B 3/422: {Linear saturated polyesters derived from dicarboxylic acids and dihydroxy compounds}
- C08G 63/18: the acids or hydroxy compounds containing carbocyclic rings
- C09D 167/00: Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain (based on polyester-amides C09D177/12; based on polyester-imides C09D179/08); Coating compositions based on derivatives of such polymers
- Y10T 428/31681: Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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

This invention provides a linear thermosettable polyester based upon 10-20 weight percent cyclohexanedimethanol, 10-16 weight percent adipic acid, 12-16 weight percent neopentyl glycol, 12-16 weight percent propylene glycol or butanediol, and 40-48 weight percent isophthalic acid component.

## Claims

### Claim 1

A linear thermosettable polyester resin based upon 10-20 weight percent cyclohexanedimethanol, 10-16 weight percent adipic acid, 12-16 weight percent neopentyl glycol, 12-16 weight percent propylene glycol or butanediol, and 40-48 weight percent isophthalic acid component.

### Claim 2 (depends on 1)

The polyester resin of claim 1, wherein said isophthalic acid component is isophthalic acid.

### Claim 3

A coating composition comprising
(A) a linear thermosettable polyester resin based upon 10-20 weight percent cyclohexanedimethanol, 10-16 weight percent adipic acid, 12-16 weight percent neopentyl glycol, 12-16 weight percent propylene glycol or butanediol, and 40-48 weight percent isophthalic acid component,
(B) between about 10 weight percent and about 20 weight percent on resin solids of an aminoplast,
(C) between about 0.1 and about 1 weight percent on resin solids of an acid catalyst, and
(D) an inert organic solvent in an amount sufficient to provide a solids content of between about 50 weight percent and about 75 weight percent.

### Claim 4 (depends on 3)

The composition of claim 3 containing a pigment.

### Claim 5 (depends on 4)

The composition of claim 4, wherein said pigment is titanium dioxide.

### Claim 6

A coating composition comprising
(A) a linear thermosettable polyester resin based upon 10-20 weight percent cyclohexanedimethanol, 10-16 weight percent adipic acid, 12-16 weight percent neopentyl glycol, 12-16 weight percent propylene glycol or butanediol, and 40-48 weight percent isophthalic acid component,
(B) between about 10 weight percent and about 20 weight percent on resin solids of an aminoplast which is hexamethoxymethylmelamine,
(C) between about 0.1 and about 1 weight percent on resin solids of an acid catalyst, and
(D) an inert organic solvent in an amount sufficient to provide a solids content of between about 50 weight percent and about 75 weight percent.

### Claim 7 (depends on 3)

A metal substrate coated with a coating composition of claim 3 and baked.

### Claim 8 (depends on 6)

A metal substrate coated with a coating composition of claim 6 and baked.