# US 7,608,645 B2 · Dual cure coating compositions

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- Number: US 7,608,645 B2
- Document ID: US7608645B2
- Status: Granted
- Kind: B2
- Application number: 11/241,484
- Filed: 2005-09-30
- Published: 2006-06-15
- Granted: 2009-10-27
- Earliest claimed: 2004-09-30
- Assignees: E.I. du Pont de Nemours and Company
- Inventors: Neville Everton Drysdale; Laura Ann Lewin; Robert John Barsotti; Gary A. Johansson
- Web page: https://patentgrep.com/patent/US7608645B2

## CPC

- C08F 220/36: containing oxygen in addition to the carboxy oxygen {, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate}
- C09D 4/00: Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16}
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED 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)

## Abstract

The present invention relates to the use of (meth)acrylate functionalized amide acetals as reactive components with crosslinking agents and UV radiation to give new coatings compositions.

## Claims

### Claim 1

A composition, comprising:
a (meth)acrylate amide acetal of the formula
wherein R42-R49 independently represent a hydrogen, C1-C20 alkyl, C1-C20 alkenyl, C1-C20 alkynyl, C1-C20 aryl, C1-C20 alkyl ester, or C1-C20 aralkyl group, said alkyl, alkenyl, alkynyl, aryl, or aralkyl may each have one or more substituents selected from the groups consisting of halo, alkoxy, imino, and dialkylamino;
R41 is (CR50R51)n wherein R50 and R51 are hydrogen, C1-C20 alkyl, C1-C20 alkenyl, C1-C20 alkynyl, C1-C20 aryl, C1-C20 alkyl ester, or C1-C20 aralkyl group;
R52 is hydrogen or methyl;
n is 1-10;
a crosslinking moiety; and
a UV catalyst.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the crosslinking moiety is selected from the group consisting of isocyanates, epoxides, carboxylic acid anhydrides, melamines, and silane(s); and the UV catalyst is any compound capable of generating radicals upon UV exposure.

### Claim 3 (depends on 1)

A process for forming a coating composition comprising (meth)acrylate amide acetals of claim 1, said process comprising reacting a (meth)acrylate amide acetal with a crosslinking moiety to produce a crosslinked coating, and subsequently exposing said crosslinked coating to UV radiation.

### Claim 4 (depends on 3)

A coating made by the process of claim 3, having the properties of clarity and hardness.

### Claim 5 (depends on 4)

The coating of claim 4 used as part of a basecoat-clearcoat system.