Preparations of noble metal complexes

Patent metadata

Field	Value
Publication number	US-12435425-B2
Application number	US-202118004581-A
Country	US
Kind code	B2
Filing date	Apr 26, 2021
Priority date	Jul 13, 2020
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

A preparation containing:
(A) 30 to 90 wt. % of at least one organic solvent, (B) 10 to 70 wt. % of at least one noble metal complex comprising diolefin and C6-C18 monocarboxylate ligands selected from the group consisting of noble metal complexes of the type [LPd[O(CO)R1]X] n , [LRh[O(CO)R1]] m , and [LIr[O(CO)R1]] m , wherein L represents a compound acting as diolefin ligand, wherein X is selected among bromide, chloride, iodide, and —O(CO)R2, wherein —O(CO)R1 and —O(CO)R2 represent identical or different non-aromatic C6-C18 monocarboxylic acid residues, and wherein n is an integral number 1, and m is an integral number ≥2, and (C) 0 to 10 wt. % of at least one additive.

First claim

The invention claimed is:

1. A preparation consisting of:
(A) 30 to 90 wt. % of at least one organic solvent, the at least one organic solvent having a boiling point ranging from 50 to 200° C.,
(B) 10 to 70 wt. % of at least one noble metal complex comprising diolefin and C 6 -C 18 monocarboxylate ligands selected from the group consisting of noble metal complexes of the type [LPd[O(CO)R1]X] n , [LRh[O(CO)R1]] m and [LIr[O(CO)R1]] m , wherein L represents a compound acting as diolefin ligand, wherein X is selected among bromide, chloride, iodide, and —O(CO)R2, wherein —O(CO)R1 and —O(CO)R2 represent identical or different non-aromatic monocarboxylic acid residues with each of R1 and R2 being a C 5 -C 17 hydrocarbon residue, and wherein n is an integral number ≥1, and m is an integral number ≥2, and
(C) 0 to 10 wt. % of at least one additive selected from the group consisting of wetting additives, rheology additives, defoamers, deaerators, additives for influencing the surface tension, and odorants,
wherein the preparation is in the form of an organic solution.

2. The preparation according to claim 1 , wherein the integral n>1 and the integral m lies in the range of 2 to 5.

3. The preparation according to claim 1 , wherein the preparation is in the form of a non-colloidal organic solution.

4. The preparation according to claim 1 , wherein a noble metal content originating from the at least one mobile metal complex in the range of 2.5 to 25 wt. %.

5. The preparation according to claim 1 , wherein the at least one noble metal complex is selected among noble metal complexes of the type [(COD)Pd[O(CO)R1] 2 ] n , [(NBD)Pd[O(CO)R1] 2 ] n , [(COD)Rh[O(CO) R1]] m , [(NBD)Rh[O(CO)R1]] m , [(COD)Ir[O(CO)R1]] m , and [(NBD)Ir[O(CO)R1]] m , wherein n is equal to 1 or 2, and wherein m is equal to 2.

6. The preparation according to claim 1 , wherein the at least one noble metal complex exhibits a decomposition temperature in the range of 150 to 200° C.

7. A method for the production of a noble metal-comprising layer on a substrate, the method comprising:
(1) applying a covering layer of a preparation according to claim 1 to the substrate, and
(2) thermally decomposing the covering layer by forming the noble metal-comprising layer.

8. The method according to claim 7 , wherein the substrate comprises one or more materials selected from the group consisting of glass, carbide substrates, nitride substrates, boride substrates, ceramic substrates, semiconductor substrates, metal, plastics, modified or unmodified polymers of natural origin, carbon substrates, wood, cardboard and paper.

9. The method according to claim 7 , wherein the substrate is provided with the coating layer on an inner and/or outer surface and/or on an inner and/or an outer surface portion.

10. The method according to claim 7 , wherein the covering layer applied in step (1) is initially dried and is thereby partially or completely freed from the organic solvent (A), before it is subjected to the thermal decomposition in step (2).

11. The method according to claim 7 , wherein the noble metal-comprising layer has a thickness of from 50 nm to 5 μm.

12. The method according to claim 7 , wherein the noble metal-comprising layer is a layer comprising metallic palladium, rhodium oxide, or iridium oxide.

13. The preparation according to claim 1 , wherein the at least one noble metal complex exhibits a decomposition temperature in the range of from 150 to 250° C.

14. The preparation according to claim 1 , wherein at least one of R1 and R2 is a C 7 -C 17 hydrocarbon residue.

15. The preparation according to claim 1 , wherein at least one of R1 and R2 is a C 5 -C 17 hydrocarbon residue is a linear hydrocarbon structure.

16. The preparation according to claim 1 , wherein R1 and R2 have different chemical structures.

17. A preparation consisting of:
(A) 30 to 90 wt. % of at least one organic solvent, the at least one organic solvent having a boiling point ranging from 50 to 200° C.,
(B) 10 to 70 wt. % of at least one noble metal complex that exhibits a decomposition temperature ranging from 150 to 250° C., the at least one noble metal complex comprising diolefin and C 6 -C 18 monocarboxylate ligands selected from the group consisting of noble metal complexes of the type [LPd[O(CO)R1]X] n , [LRh[O(CO)R1]] m and [LIr[O(CO)R1]] m , wherein L represents a compound acting as diolefin ligand, wherein X is selected among bromide, chloride, iodide, and —O(CO)R2, wherein —O(CO)R1 and —O(CO)R2 represent identical or different non-aromatic monocarboxylic acid residues with each of R1 and R2 being a C 5 -C 17 hydrocarbon residue, and wherein n is an integral number ≥1, and m is an integral number ≥2, and
(C) up to 10 wt. % of at least one additive selected from the group consisting of wetting additives, rheology additives, defoamers, deaerators, additives for influencing the surface tension, and odorants.

18. The preparation of claim 1 , wherein the at least one solvent is not a ketone.

19. The preparation of claim 1 , wherein the at least one solvent is selected from the group consisting of halogenated hydrocarbons, aromatic compounds, araliphatics, alcohols, ethers, glycol ethers, and any combination thereof.

20. The preparation of claim 1 , wherein the at least one solvent is selected from the group consisting of halogenated hydrocarbons, alcohols, glycol ethers, and any combination thereof.

21. The preparation according to claim 1 , wherein the at least one noble metal complex is selected among noble metal complexes of the type [(COD) Pd [O (CO) R1] 2] n, [(NBD)Pd[O(CO)R1] 2 ] n , [(COD)Rh[O(CO)R1]] m , [(NBD)Rh[O(CO)R1]] m , and [(NBD)Ir[O(CO)R1]] m , wherein n is equal to 1 or 2, and wherein m is equal to 2.

22. The preparation according to claim 1 , wherein the at least one noble metal complex is selected among noble metal complexes of the type [(NBD)Pd[O(CO)R1] 2 ] n , [(NBD)Rh[O(CO)R1]] m , and [(NBD)Ir[O(CO)R1]] m , wherein n is equal to 1 or 2, and wherein m is equal to 2.

Assignees

• Heraeus Deutschland Gmbh & Co Kg

Inventors

• Sievi Robert
• Gock Michael
• Walter Richard

Classifications

• C23C18/1295

  with after-treatment of the deposited inorganic material · CPC title

• C23C18/08 Primary

  characterised by the deposition of metallic material · CPC title

• C23C18/1216 Primary

  Metal oxides (C23C18/1212 takes precedence) · CPC title