# US 5,346,960 A · Fatty acid hydroxyalkylamides as coreactable stabilizers and flow aids for powder coatings

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- Number: US 5,346,960 A
- Document ID: US5346960A
- Status: Granted
- Kind: A
- Application number: 08/071,786
- Filed: 1993-02-22
- Granted: 1994-09-13
- Earliest claimed: 1992-07-27
- Assignees: Rohm and Haas Company
- Inventors: Richard F. Merritt; Kurt A. Wood; Aurelia de la Cuesta Sheppard
- Web page: https://patentgrep.com/patent/US5346960A

## CPC

- 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
- Y10S 525/934: Powdered coating composition
- Y10T 428/31786: Of polyester [e.g., alkyd, etc.]
- 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)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A thermosetting powder coating composition having improved optical properties, such as orange peel, gloss and Distinctness of Image (DOI), which includes a reactable mixture of a carboxylic acid group-containing polyester or acrylic, a fatty acid hydroxyalkylamide group-containing material and beta-hydroxyalkylamide curing agent.

## Claims

### Claim 1

A thermosetting powder coating composition having improved optical properties comprising a carboxylic acid group-containing acrylic, a beta-hydroxyalkylamide curing agent, and about 0.1 percent to about 15 percent of a fatty acid hydroxyalkylamide group-containing material selected from the group consisting of lauramide diethanolamine, acetamide diethanolamine, capramide diethanolamine and stearamide diethanolamine.

### Claim 2 (depends on 1)

The composition of claim 1 wherein the fatty acid hydroxyalkylamide group-containing material varies from about 2 percent to about 10 percent, based on the weight of the carboxylic acid group-containing acrylic.

### Claim 3 (depends on 2)

The composition of claim 2 wherein the fatty acid hydroxyalkylamide group-containing material is lauramide diethanolamine.

### Claim 4 (depends on 2)

The composition of claim 2 wherein the fatty acid hydroxyalkylamide group-containing material is acetamide diethanolamine.

### Claim 5 (depends on 2)

The composition of claim 2 wherein the fatty acid hydroxyalkylamide group-containing material is stearamide diethanolamine.

### Claim 6 (depends on 2)

The composition of claim 2 wherein the carboxylic acid group-containing acrylic has a Tg of from about 35.degree. C. to about 100.degree. C.

### Claim 7

A thermosetting powder coating composition having improved appearance properties comprising a coreactable mixture of a carboxylic acid group-containing acrylic, a beta-hydroxyalkylamide curing agent, and from about 0.1 percent to about 15 weight percent by weight based on the weight of the acrylic, of a fatty acid hydroxylalkylamide group-containing material selected from the group consisting of lauramide diethanolamine, acetamide diethanolamine, capramide diethanolamine and stearamide diethanolamine.