Liquid composition and its production process, and glass article

Patent metadata

Field	Value
Publication number	US-9725355-B2
Application number	US-201314035339-A
Country	US
Kind code	B2
Filing date	Sep 24, 2013
Priority date	Mar 24, 2011
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

To provide a liquid composition capable of forming a coating film which has sufficient ultraviolet-absorbing ability and infrared-absorbing ability.
A liquid composition for forming a coating film comprising an infrared absorber selected from indium tin oxide, antinomy tin oxide and a composite tungsten oxide, an ultraviolet absorber selected from a benzophenone compound, a triazine compound and a benzotriazole compound, a dispersing agent having an acid value and/or an amine value, a binder component and a liquid medium, wherein the dispersing agent is contained in a content such that the product of the sum (mgKOH/g) of the acid value and the amine value of the dispersing agent, and the mass ratio of the dispersing agent to the infrared absorber, is from 2 to 30 (mgKOH/g).

First claim

What is claimed is:

1. A liquid composition for forming a coating film, comprising:
(a) an infrared absorber comprising at least one member selected from indium tin oxide, antimony tin oxide and a composite tungsten oxide;
(b) an ultraviolet absorber comprising at least one member selected from a benzophenone compound, a triazine compound and a benzotriazole compound;
(c) a dispersing agent;
(d) a binder component;
(e) a chelating agent capable of forming a complex with the infrared absorber (a), the complex not substantially absorbing light having a visible light wavelength; and
(f) a liquid medium.

2. The liquid composition according to claim 1 , wherein at least one of the conditions (I) to (III) is satisfied:
(I) the dispersing agent (c) has an acid value and/or an amine value; and the dispersing agent (c) is contained in the liquid composition in such an amount that the product of the sum (mgKOH/g) of the acid value and the amine value, and the mass ratio of the dispersing agent (c) to the infrared absorber (a), is from 2 to 30 (mgKOH/g);
(II) the dispersing agent (c) has an acid value of from 5 to 200 mgKOH/g; and the dispersing agent is contained in the liquid composition in a proportion of from 11 to 40 parts by mass per 100 parts by mass of the infrared absorber (a); or
(III) the dispersing agent (c) has an acid value and/or an amine value; the dispersing agent (c) is contained in the liquid composition in a proportion of from 0.1 to 40 parts by mass per 100 parts by mass of the infrared absorber (a) and in such an amount that the product of the sum (mgKOH/g) of the acid value and the amine value, and the mass ratio of the dispersing agent (c) to the infrared absorber (a), is from 0 to 30 (mgKOH/g); and the chelating agent (e) is contained in the liquid composition in a proportion of from 2 to 50 parts by mass per 100 parts by mass of the infrared absorber (a).

3. The liquid composition according to claim 2 ,
wherein when the condition (I) is satisfied, one of the following conditions is satisfied:
the dispersing agent (c) has the acid value of from 40 to 200 mgKOH/g and the amine value of from 0 to 10 mgKOH/g,
the dispersing agent (c) has the acid value of from 0 to 10 mgKOH/g and the amine value of from 40 to 200 mgKOH/g, or
the dispersing agent (c) has the acid value of from 5 to 30 mgKOH/g and the amine value of from 5 to 30 mgKOH/g.

4. The liquid composition according to claim 2 , wherein when one of the conditions (I) and (II) is satisfied, the chelating agent (e) is contained in the liquid composition in a proportion of from 2 to 50 parts by mass per 100 parts by mass of the infrared absorber (a).

5. The liquid composition according to claim 1 , wherein the chelating agent (e) is at least one member selected from the group consisting of an aminocarboxylic acid chelating agent, a phosphonic acid chelating agent and a chelate metal salt.

6. The liquid composition according to claim 1 , wherein the infrared absorber (a) is contained in the liquid composition in a proportion of from 1 to 80 parts by mass, and the ultraviolet absorber (b) is contained in the liquid composition in a proportion of from 1 to 50 parts by mass, per 100 parts by mass of the binder component (d).

7. The liquid composition according to claim 1 , wherein the ultraviolet absorber (b) is a hydroxy group-containing benzophenone compound.

8. The liquid composition according to claim 1 , wherein the ultraviolet absorber (b) is an ultraviolet absorber having a silyl group having a hydrolyzable group bonded.

9. The liquid composition according to claim 1 , wherein the infrared absorber (a) is indium tin oxide.

10. The liquid composition according to claim 1 , wherein the binder component (d) comprises a silicon oxide matrix material component.

11. The liquid composition according to claim 10 , wherein the binder component (d) further comprises a polyepoxide.

12. A glass article comprising:
a glass substrate; and
a coating film formed from the liquid composition as defined in claim 1 on at least part of a surface of the glass substrate.

13. The glass article according to claim 12 , wherein the thickness of the coating film is from 1.0 to 7.0 μm.

14. A process for producing a liquid composition for forming a coating film, comprising:
mixing an infrared absorber (a) comprising at least one member selected from indium tin oxide, antimony tin oxide and a composite tungsten oxide, a dispersing agent (c) having an acid value and/or an amine value, and a dispersion medium to obtain a dispersion;
mixing a chelating agent (e) capable of forming a complex with the infrared absorber (a), the complex not substantially absorbing light having a visible light wavelength, with the dispersion; and
mixing the dispersion, in which the chelating agent is mixed, an ultraviolet absorber (b) comprising at least one member selected from a benzophenone compound, a triazine compound and a benzotriazole compound, and a binder component (d).

15. The process according to claim 14 , wherein at least one of the following conditions (I) to (III) is satisfied:
(I) the content of the dispersing agent (c) in the dispersion is adjusted so that the product of the sum (mgKOH/g) of the acid value and the amine value of the dispersing agent (c), and the mass ratio of the dispersing agent (c) to the infrared absorber (a), is from 2 to 30 (mgKOH/g);
(II) the dispersing agent (c) has the acid value of from 5 to 200 mgKOH/g, and the content of the dispersing agent (c) in the dispersion is adjusted to from 11 to 40 parts by mass per 100 parts by mass of the infrared absorber (a); or
(III) the content of the dispersing agent (c) in the dispersion is adjusted to from 0.1 to 40 parts by mass per 100 parts by mass of the infrared absorber (a) and so that the product of the sum (mgKOH/g) of the acid value and the amine value, and the mass ratio of the dispersing agent (c) to the infrared absorber (a), is from 0 to 30 (mgKOH/g); and the content of the chelating agent (e) in the dispersion is adjusted to from 2 to 50 parts by mass per 100 parts by mass of the infrared absorber (a).

16. The process according to claim 15 ,
wherein when the condition (I) is satisfied, one of the following conditions is satisfied:
the dispersing agent (c) has the acid value of from 40 to 200 mgKOH/g and the amine value of from 0 to 10 mgKOH/g,
the dispersing agent (c) has the acid value of from 0 to 10 mgKOH/g and the amine value of from 40 to 200 mgKOH/g, or
the dispersing agent (c) has the acid value of from 5 to 30 mgKOH/g and the amine value of from 5 to 30 mgKOH/g.

17. The process according to claim 15 , wherein when one of the conditions (I) and (II) is satisfied, the content of the chelating agent (e) in the dispersion is adjusted to from 2 to 50 parts by mass per 100 parts by mass of the infrared absorber (a).

18. The liquid composition according to claim 1 , wherein the infrared absorber (a) is contained in the liquid composition in a proportion of from 5 to 60 parts by mass, and the ultraviolet absorber (b) is contained in the liquid composition in a proportion of from 5 to 40 parts by mass, per 100 parts by mass of the binder component (d).

19. The liquid composition according to claim 1 , wherein the infrared absorber (a) is contained in the liquid composition in a proportion of from 10 to 40 parts by mass, and the ultraviolet absorber (b) is contained in the liquid composition in a proportion of from 8 to 30 parts by mass, per 100 parts by mass of the binder component (d).

Assignees

• Asahi Glass Co Ltd

Inventors

• Kodaira Hirokazu
• Hayami Yutaka
• Tomonaga Hiroyuki

Classifications

• C03C2217/476

  Tin oxide or doped tin oxide · CPC title

• C09D7/1216

  Chemistry & Metallurgy · mapped topic

• C08L63/00

  Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title

• C03C17/008

  comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28 · CPC title

• C09D7/1241

  Chemistry & Metallurgy · mapped topic