Metal oxide precursors, coating compositions containing same, and use thereof

Patent metadata

Field	Value
Publication number	US-9975908-B2
Application number	US-201414900890-A
Country	US
Kind code	B2
Filing date	Jun 6, 2014
Priority date	Jun 25, 2013
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

The present invention relates to metal oxide precursors comprising i) at least one metal atom selected from the group consisting of In, Ga, Zn and Sn, ii) at least one non-photocrosslinkable ligand and iii) at least one photocrosslinkable ligand, to liquid coating compositions comprising the precursors, and to their use.

First claim

The invention claimed is:

1. A liquid coating composition, comprising
at least one metal oxide precursor, which is a coordination complex comprising:
i) at least one metal atom selected from the group consisting of In, Ga, Zn and Sn;
ii) at least one non-photocrosslinkable ligand; and
iii) at least one photocrosslinkable ligand
wherein the at least one photocrosslinkable ligand is selected from the group consisting of an acrylate, a methacrylate and an allyl;
at least one solvent; and
at least one photoinitiator.

2. The liquid coating composition according to claim 1 , wherein the at least one non-photocrosslinkable ligand is selected from the group consisting of an oxo radical, a hydroxyl radical, an alkoxy radical, a nitrate radical and a halide radical.

3. The liquid coating composition according to claim 2 , comprising, as at least one non-photocrosslinkable ligand, at least one oxo radical and at least one alkoxy radical.

4. The liquid coating composition according to claim 1 , comprising, as the at least one non-photocrosslinkable ligand, an oxo, an alkoxy and at least one selected from the group consisting of a nitrate and a halide.

5. The liquid coating composition according to claim 1 , wherein the at least one metal atom is In.

6. A metal oxide precursor having formula:
[In 6 (μ 6 -O)(μ 2 -OR) 12-x Cl 6 (R′) x ] 2−

wherein:
R represents a C 1-10 alkyl,
R′ represents acrylate or methacrylate, and
x represents 1-10.

7. A metal oxide precursor having formula:
[In 6 (μ 6 -O)(μ 2 -OR) 12-x (NO 3 ) 6 (R′) x ] 2−

wherein:
R represents a C 1-10 alkyl,
R′ represents acrylate or methacrylate, and
x represents 1-10.

8. The liquid coating composition according to claim 1 , comprising phenylbis(2,4,6-trimethyl benzoyl)phosphine oxide as the photoinitiator.

Assignees

• Evonik Degussa Gmbh

Inventors

• Steiger Jurgen
• Pham Duy Vu
• Merkulov Alexey
• Weber Dennis

Classifications

• C23C18/143

  Radiation by light, e.g. photolysis or pyrolysis · CPC title

• G03F7/029

  Inorganic compounds; Onium compounds; Organic compounds having hetero atoms other than oxygen, nitrogen or sulfur · CPC title

• C07F5/00 Primary

  Compounds containing elements of Groups 3 or 13 of the Periodic Table · CPC title

• G03F7/028

  with photosensitivity-increasing substances, e.g. photoinitiators · CPC title

• C23C18/1216

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