Liquid composition, coating film, and method for producing liquid composition

Patent metadata

Field	Value
Publication number	US-11624004-B2
Application number	US-201816483857-A
Country	US
Kind code	B2
Filing date	Feb 9, 2018
Priority date	Feb 9, 2017
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

A liquid composition that can provide a film having excellent antifogging performance and weather resistance. The liquid composition contains nanocomposite particles. The nanocomposite particles contain metal particles and a perfluorocarbon sulfonic acid resin or a sulfonic acid salt resin thereof. The perfluorocarbon sulfonic acid resin has an equivalent weight of 550 to 800. The nanocomposite particles have an average particle size of 15 to 100 nm.

First claim

The invention claimed is:

1. A liquid composition comprising nanocomposite particles,
the nanocomposite particles containing metal particles and a sulfonic acid salt resin of a perfluorocarbon sulfonic acid resin,
the sulfonic acid salt resin being a salt obtained by replacing a hydrogen ion of a sulfonic acid group by a cation,
the cation being at least one selected from the group consisting of Na+ and Li+,
the perfluorocarbon sulfonic acid resin having an equivalent weight of 550 to 800, and
the nanocomposite particles having an average particle size of 15 to 100 nm.

2. The liquid composition according to claim 1 ,
wherein the perfluorocarbon sulfonic acid resin is a copolymer containing:
a polymerized unit represented by —(CF 2 —CFZ)—, wherein Z is H, Cl, F, or a C1-C3 perfluoroalkyl group; and
a polymerized unit represented by —(CF 2 —CF(—O—(CF 2 ) m —SO 3 H))—, wherein m is an integer of 1 to 12.

3. The liquid composition according to claim 1 , further comprising an alcohol.

4. The liquid composition according to claim 1 ,
wherein the liquid composition is a coating material.

5. A film comprising the liquid composition according to claim 1 .

6. A method for producing the liquid composition comprising nanocomposite particles according to claim 1 , the method comprising
mixing the metal particles, the sulfonic acid salt resin of a perfluorocarbon sulfonic acid resin, an alkoxysilane, and at least one catalyst selected from the group consisting of solid acid catalysts other than the perfluorocarbon sulfonic acid resin and the metal particles, acid compounds, and alkali compounds.

7. The production method according to claim 6 ,
wherein, the alkoxysilane is hydrolyzed and the metal particles are surface-treated with the sulfonic acid salt resin of a perfluorocarbon sulfonic acid resin.

8. The production method according to claim 6 ,
wherein the mixing is performed in an alcohol.

9. The production method according to claim 6 ,
wherein the nanocomposite particles contain the metal particles and the sulfonic acid salt resin of a perfluorocarbon sulfonic acid resin.

10. The production method according to claim 6 ,
wherein the nanocomposite particles have an average particle size of 15 to 100 nm.

11. A method for producing the liquid composition comprising nanocomposite particles according to claim 1 , the method comprising:
forming a liquid composition containing a nanocomposite particle precursor by mixing the metal particles, the sulfonic acid salt resin of a perfluorocarbon sulfonic acid resin, an alkoxysilane, and at least one catalyst selected from the group consisting of solid acid catalysts other than the sulfonic acid salt resin of a perfluorocarbon sulfonic acid resin and the metal particles, acid compounds, and alkali compounds; and
performing ion exchange on the sulfonic acid salt resin of a perfluorocarbon sulfonic acid resin in the nanocomposite particle precursor to form a liquid composition containing nanocomposite particles.

12. The production method according to claim 11 ,
wherein in the formation of the liquid composition containing the nanocomposite particle precursor, the alkoxysilane is hydrolyzed and the metal particles are surface-treated with the sulfonic acid salt resin of a perfluorocarbon sulfonic acid resin.

13. The production method according to claim 11 ,
wherein the formation of the liquid composition containing the nanocomposite particle precursor is performed in an alcohol.

14. The production method according to claim 11 ,
wherein the nanocomposite particles contain the metal particles and the sulfonic acid salt resin of a perfluorocarbon sulfonic acid salt resin.

Assignees

• Daikin Ind Ltd

Inventors

• OHTSUKA Kazuhiro
• Tomita Masahiro
• Tanaka Fujimaru

Classifications

• C08L81/08

  Polysulfonates · CPC title

• C08L83/04

  Polysiloxanes · CPC title

• C09K3/18

  for application to surfaces to minimize adherence of ice, mist or water thereto (rendering particulate materials free flowing, in general, e.g. making them hydrophobic B01J2/30); Thawing or antifreeze materials for application to surfaces (used in liquids for heat-transfer, heat-exchange or heat-storage or for the production of heat or cold other than by combustion, e.g. radiator liquids, C09K5/00) · CPC title

• C09D7/40

  Additives · CPC title

• C08K9/08

  Ingredients agglomerated by treatment with a binding agent · CPC title