Coating composition and paint produced from same

Abstract

The invention relates to a coating composition based on organic or water-based solvent, containing at least one binder (A), optionally at least one cross-linking agent (B), and at least one matting agent (M) based on silicon dioxide (SiO.sub.2), wherein the coating composition contains a combination of a) a matting agent based on silicon dioxide (SiO.sub.2) that is surface-modified with one or more waxes, b) an organic matting agent, and c) polyamide particles, and a clear lacquer comprising a coating composition of this type. In this way, automobile series paints can be produced having targeted, adjustable low gloss.

Claims

1. A coating composition based on an organic solvent or water-based solvent, comprising at least one binder (A), optionally, at least one crosslinking agent (B), and a combination of a) a matting agent based on silica (SiO.sub.2) surface-modified with one or more waxes having a d50 particle size between 4 and 7 m, and b) an organic matting agent, and c) polyamide particles having a d50 particle size between 20 and 60 m.

2. The coating composition according to claim 1, wherein the matting agent based on silica (SiO.sub.2) surface-modified with one or more waxes is a matting agent based on silicic acid.

3. The coating composition according to claim 1, wherein the coating composition contains the matting agent based on silica (SiO.sub.2) surface-modified with one or more waxes in a range between 1 weight-% and 5 weight-%, based on the total weight of the coating composition.

4. The coating composition according to claim 1, wherein the organic matting agent is a matting agent based on a urea-oxomethane polymer.

5. The coating composition according to claim 4, wherein the coating composition contains the organic matting agent based on the urea-oxomethane-polymer in a range of between 1 weight-% and 7 weight-%, based on the total weight of the coating composition.

6. The coating composition according to claim 1, wherein the coating composition contains the polyamide particles in a range of between 3 weight-% and 12 weight-%, based on the total weight of the coating composition.

7. An article comprising a coating applied to an automotive vehicle, wherein the coating is a crosslinked coating of the coating composition according to claim 1.

8. The article according to claim 7, wherein the crosslinked coating has a layer thickness in a range of between 45 m and 60 m.

9. The coating composition according to claim 4, wherein said organic matting agent based on the urea-oxomethane polymer is methylene-diaminomethylether-polycondensate.

10. An article comprising a clear coating applied to an automotive vehicle wherein the coating is the coating composition according to claim 1.

11. A method for coating an automotive vehicle comprising applying the coating composition of claim 1 to said vehicle.

Description

EXAMPLE 1

(1) A coating composition on the basis of organic solvents or water-based, containing at least one binder (A) and optionally at least one cross linking agent (B), as well as: a) 1 weight-% to 5 weight-% Acematt OK 412 (from Degussa) b) 1 weight-% to 7 weight-% Deutron MK (Deutron), und c) 3 weight-% to 12 weight-% Rilsan D50 (Arkema),

(2) each based on the total weight of the coating composition.

(3) After the application and curing of the coating composition a degree of gloss of the so achieved clear coating was measured in the range of 2 to 15 gloss units, measured in an angle of 60 with a usual gloss meter, at a structuring of the surface in the range of between 30 m and 60 m. With an application of the resultant clear coating in a layer thickness of 50 m R.sub.a values (R.sub.a is the arithmetic middle value according to DIN EN ISO 4287:2010) between 10 m and 30 m could be measured. With an application of the resultant clear coating in a layer thickness of 35 m R.sub.a values (R.sub.a is the arithmetic middle value according to DIN EN ISO 4287:2010) between 20 m and 50 m were measured.

EXAMPLE 2

(4) A coating composition on the basis of organic solvents or water-based, containing at least one binder (A) and optionally at least one cross linking agent (B), as well as: a) 1 weight-% to 5 weight-% Acematt OK 607 (from Degussa) b) 1 weight-% to 7 weight-% Deutron MK (Deutron), und c) 3 weight-% to 12 weight-% Rilsan D60 (Arkema),

(5) each based on the total weight of the coating composition.

(6) After the application and curing of the coating composition a degree of gloss of the so achieved clear coating was measured in the range of 2 to 15 gloss units, measured in an angle of 60 with a usual gloss meter, at a structuring of the surface in the range of between 30 m and 60 m. With an application of the resultant clear coating in a layer thickness of 50 m R.sub.a values (R.sub.a is the arithmetic middle value according to DIN EN ISO 4287:2010) between 10 m and 30 m could be measured. With an application of the resultant clear coating in a layer thickness of 35 m R.sub.a values (R.sub.a is the arithmetic middle value according to DIN EN ISO 4287:2010) between 20 m and 50 m were measured.