Copper coloured paint, a process for making it and its application

Patent metadata

Field	Value
Publication number	US-2016102214-A1
Application number	US-201514880461-A
Country	US
Kind code	A1
Filing date	Oct 12, 2015
Priority date	Oct 13, 2014
Publication date	Apr 14, 2016
Grant date	—

Abstract

The invention generally relates to an Au comprising composition, in particular for use as a paint. In particular, the invention relates to a composition, a process for providing a coloured surface, and items comprising a coloured surface. The invention relates to a composition comprising the following components
a. At least about 30 wt. % organic vehicle; b. About 0.5 to about 35 wt. % of Au as such present in the composition in the form of a Au organic compound; c. About 0.1 to about 10 wt. % of a tetravalent metal as such present in the composition in form of a tetravalent metal organic compound; d. About 0 to about 6 wt. % of Bi as such present in the composition in the form of a Bi organic compound;
wherein the wt. % are based on the total weight of the composition.

First claim

What is claimed is:

1 . A composition comprising the following components
a. At least about 30 wt. % organic vehicle; b. About 0.5 to about 35 wt. % of Au as such present in the composition in the form of a Au organic compound; c. About 0.1 to about 10 wt. % of a tetravalent metal as such present in the composition in form of a tetravalent metal organic compound; d. About 0 to about 6 wt. % of Bi as such present in the composition in the form of a Bi organic compound; e. wherein the wt. % are based on the total weight of the composition.

2 . The composition according to claim 1 , wherein the molar ratio of Au to the tetravalent metal is in the range from about 1:5 to about 20:1.

3 . The composition according to claim 1 , wherein the tetravalent metal is one or more selected from the group consisting of: Ti, Zr, Hf, Ce, Ni, Mn, Co, Cu, Sn or Si.

4 . The composition according to claim 1 , wherein the tetravalent metal is Ti, Zr or both.

5 . The composition according to claim 1 , wherein one or more of the following is satisfied:
a. The Au organic compound is a resinate; b. The tetravalent metal organic compound comprises one or more alkoxy groups; c. The Bi organic compound is a resinate.

6 . The composition according to claim 1 , wherein one or more of the following is satisfied:
a. The Au in the Au organic compound is bonded to one or more O atoms or one or more S atoms or one or more O atoms and one or more S atoms; b. The tetravalent metal in the tetravalent metal organic compound is bonded to one or more O atoms; c. The Bi in the Bi organic compound is bonded to one or more O atoms or one or more S atoms or one or more O atoms and one or more S atoms.

7 . A composition according to claim 1 , further comprising from about 0.001 to about 0.2 wt. % rhodium as such present in the composition in the form of a rhodium organic compound.

8 . A composition according to claim 1 , further comprising from about 0.005 to about 0.1 wt. % chromium as such present in the composition in the form of a chromium organic compound.

9 . A composition according to claim 1 , which when according to the test method provided herein is superimposed over a substrate and fired gives a surface with L* less than about 65 and b*/a* less than about 2.6.

10 . A process for the preparation of a coloured surface comprising the following steps:
a. Providing a composition according to any of the preceding claims; b. Providing a substrate; c. Superimposing the composition over the substrate to obtain a precursor; d. Firing the precursor to obtain the coloured surface.

11 . The process according to claim 10 , wherein the substrate is selected from the group consisting of:
a. A first substrate comprising at least about 50 wt. %, based on the total weight of the substrate, of SiO 2 ; b. A second substrate comprising at least about 50 wt. %, based on the total weight of the substrate, of Al 2 O 3 ; and

12 . A coloured surface obtainable by a process according to claim 10 .

13 . The coloured surface according to claim 12 , wherein the coloured surface has L* less than about 65 and b*/a* less than about 2.6.

14 . A layered composite comprising:
a) A substrate with a substrate surface; b) A layer at least partially superimposed over the substrate surface; wherein the layer has a L* less than about 65 and b*/a* less than about 2.6.

15 . The layer composite according to claim 14 , wherein the layer comprises the following layer components
a. About 3 to about 80 wt. % of Au; b. About 0.1 to about 25 wt. % of a tetravalent metal c. About 0 to about 40 wt. % of Bi.

16 . The layer composite according to claim 14 , wherein the molar ratio of Au to the tetravalent metal in the layer is in the range from about 1:5 to about 20:1.

Assignees

• Heraeus Deutschland Gmbh & Co Kg

Inventors

• Dietz Karlheinz
• Izzy Cai
• Sheng Shirley
• Sievi Robert
• Greczmiel Michael

Classifications

• C04B41/88

  Metals · CPC title

• C04B41/5116

  Ag or Au · CPC title

• C08K5/56

  Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond · CPC title

• C03C2217/27

  Mixtures of metals, alloys · CPC title

• C03C17/10

  by deposition from the liquid phase · CPC title