Composition for Functional Coatings, Film Formed Therefrom and Method for Forming the Composition and the Film

• US 20080311308A1
• Filed: 08/13/2004
• Published: 12/18/2008
• Est. Priority Date: 08/13/2004
• Status: Abandoned Application

• Current Assignee: Hae-Wook Lee
• Original Assignee: Hae-Wook Lee
• Inventors: Lee, Hae-Wook, Park, Jin-Hong
• Application Number:
  US11/659,213
• Publication Number:
  US 20080311308A1
• Time in Patent Office: Days
• US Class Current: 427/496
• CPC Class Codes: C08F 2/44 Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
• CPC Class Codes: C08F 2/46 Polymerisation initiated by wave energy or particle radiation
• CPC Class Codes: C08F 2/48 by ultraviolet or visible light
• CPC Class Codes: C08K 3/22 of metals
• CPC Class Codes: C09D 5/24 Electrically-conducting paints conductive materials H01B1/00
• CPC Class Codes: C09D 7/62 modified by treatment with other compounds
• CPC Class Codes: C09D 7/67 Particle size smaller than 100 nm
• CPC Class Codes: C09D 7/68 Particle size between 100-1000 nm

Abstract

The present invention relates to compositions for functional films, and more particularly to compositions for functional films such as a heat ray screening film compatible with hydrolic or alcoholic and anti-hydrolic resin binder, a near infrared screening film, a chrominance correcting film, a conductive film, a magnetic film, a ferromagnetic film, a dielectric film, a ferroelectric film, an electrochromic film, an electroluminescence film, an insulating film, a reflecting film, a reflection preventing film, a catalyst film, a photocatalyst film, a light selectively absorbing film, a hard film, and a heat resisting film, films formed therefrom, and a method of forming the compositions and the films.

Claims

1. A composition for functional films comprising functional nanoparticles uniformly dispersed in amphoteric solvent.

2. The composition for functional films as claimed in claim 1, wherein the functional nanoparticles comprise conductive nanoparticles, ferroelectric nanoparticles, dielectric and ferroelectric nanoparticles, metallic oxides, sulfides, boron compounds, nitrides, near-infrared screening dyestuffs, and two-component system, three-component system, and four-component system inorganic pigment compounds.

3. The composition for functional films as claimed in claim 1, wherein the functional nanoparticles are in the range of 0.1 to 80 wt %;

and wherein the amphoteric solvent is in the range of 20 to 99.9 wt %.

4. The composition for functional films as claimed in claim 3, wherein the amphoteric solvent comprises ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether.

5. The composition for functional films as claimed in claim 1, further comprising acid for controlling the surface charge of the functional nanoparticles, wherein the acid comprises organic acid, inorganic acid, and polymer acid.

6. The composition for functional films as claimed in claim 1, further comprising dispersing agent for stabilizing the functional nanoparticles.

7. The composition for functional films as claimed in claim 6, wherein the dispersing agent is in the range of 1 to 30 wt % with respect to the functional nanoparticles, and

wherein the dispersing agent comprises a dispersing agent having amine, a dispersing agent having acid, and a neutral dispersing agent.

8. The composition for functional films as claimed in claim 7, further comprising one or more binder resins among anti-hydrolic binder resin, hydrolic binder resin, and alcoholic binder resin.

9. The composition for functional films as claimed in claim 8, wherein the binder resin is in the range of 3 to 70 wt %.

10. The composition for functional films as claimed in claim 9, wherein the hydrolic binder resin comprises water-soluble alkyd, polyvinylalcohol, polybutylalcohol, acryl, acrylstyrene, and vinylacetate,

wherein the alcoholic binder resin comprises polyvinylbutyral and polyvinylacetal, and wherein the anti-hydrolic binder resin comprises thermohardening binder resin including acryl, polycarbonate, polyvinylchloride, urethane, melamine, alkyd, polyester, and epoxy and ultraviolet hardening binder resin including epoxy acrylate, polyether acrylate, polyesther acrylate, and urethane-metamorphosed acrylate.

11. The composition for functional films as claimed in claim 8, further comprising photopolymerization initiator including 1-hydroxy-cyclo-hexyl-phenyl-ltetone, benzyl-dimethyl-ltetal, hydroxy-dimethyl-aceto-phenon, benzoin, benzoin-methyl-ether, benzoin-ethyl-ether, benzoin-isopropyl-ether, benzoin-buthyl-ether, benzyl, benzophenone, 2-hydroxy-2-methylpropiophenone, 2,2-dietoxy-ethophenone, antluaquinone, chloroanthraquinone, ethylanthraquinone, buthylanthraquinone, 2-chlorotioxanthone, alpha-chloromethylnaphthalene, and anthracene.

12. The composition for functional films as claimed in claim 8, wherein the functional nanoparticles have a diameter of no more than 200 nm and are in the range of 5 to 70 wt %, and

wherein the amphoteric solvent is in the range of 30 to 95 wt %.

13. The composition for functional films as claimed in claim 12, wherein the amphoteric solvent comprises ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether.

14. A method of forming a composition for functional films, wherein functional nanoparticles are uniformly dispersed in amphoteric solvent.

15. The method as claimed in claim 14, wherein the nanoparticles are dispersed in the amphoteric solvent such that the functional nanoparticles have a diameter of no more than 200 nm and are in the range of 5 to 70 wt % and that the amphoteric solvent is in the range of 30 to 95 wt %.

16. The method as claimed in claim 14, wherein the functional nanoparticles are dispersed in the amphoteric solvent using dispersing agent and one or more among acids for controlling the surface charge of the conductive nanoparticles.

17. The method as claimed in claim 16,

wherein the functional nanoparticles are ATO nanoparticles containing Sb of 5 to 20 wt %,

wherein the amount of the acid is in the range of 5×

10−

⁴ to 3.5×

10−

³ g,

wherein the amount of the dispersing agent is 1 to 30 wt % with respect to the conductive nanoparticles, and

wherein the dispersing agent comprises a dispersing agent having amine, a dispersing agent having acid, and a neutral dispersing agent.

18. A method of forming functional films using the composition as claimed in claim 16, comprising the steps of:

mixing functional nanoparticles with one or more binder resins among anti-hydrolic binder resin, hydrolic binder resin, and alcoholic binder resin to form coating solution;

coating a substrate with the coating solution; and

hardening the substrate using chemical rays such as ultraviolet ray and electron ray or heat.

19. The method as claimed in claim 18, wherein the binder resin is in the range of 3 to 70 wt %.

20. The method as claimed in claim 18, wherein the substrate is a film, a panel, or glass formed of polyesther, polycarbonate series resin, poly(metha)acrylacidesther series resin, satured polyesther series resin, and cyclic olefin resin and is hardened by ultraviolet ray.

21. A functional film manufactured by the method as claimed in claim 16.

22. A functional film manufactured by the method as claimed in claim 18.