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1. WO1997043668 - ARTICLES REVETUS ANTIREFLECHISSANTS, ANTI-BUEE, RESISTANT A L'ABRASION ET LEUR PROCEDE DE FABRICATION

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

Claims:

1. An article, comprising: a substrate having a surface and a coating on the surface of the substrate, said coating comprising a fluoropolymer and a
fluorochemical surfactant, said fluoropolymer and fluorochemical surfactant being selected such that the coated article is anti-reflective, abrasion resistant and anti-fogging.

2. An article, comprising: a substrate having a surface and a coating on the surface of the substrate, said coating comprising the cross-linked reaction product of a polyether fluoropolymer having functional end groups available for cross-linking and at least one fluorinated ene-functional reactant, said polyether fluoropolymer and fluorinated ene-functional reactant being selected such that the coated article is anti-reflective and abrasion resistant.

3. An article comprising a substrate having a surface and a coating on the surface of the substrate, said coating comprising a blend of a thermoplastic fluoropolymer and the cross-linked reaction polymerization product of at least one fluorinated ene-functional reactant, said thermoplastic fluoropolymer and fluorinated ene-functional reactant being selected such that the coated article is anti-reflective and abrasion resistant.

4. An article comprising a substrate having a surface and a coating adjacent the surface of the substrate, said coating comprising a blend of a thermoplastic fluoropolymer and an additional thermoplastic polymer, said thermoplastic fluoropolymer and additional thermoplastic polymer being selected such that the coated article is anti-reflective and abrasion resistant, and said additional thermoplastic polymer being selected to enhance adhesion of the coating to the surface of the substrate.

5. The article of claim 1, wherein the fluoropolymer comprises the cross-linked polymerization product of a polyether fluoropolymer having functional end groups available for cross-linking and at least one fluorinated ene-functional reactant.

6. The article of any preceding claim, wherein the polyether fluoropolymer is selected from the group consisting of perfluoropolyether urethane dimethacrylates and perfluoropolyether diacrylates, and wherein the fluorinated ene-functional reactant comprises fluorinated cyclohexyl methyl acrylate monomer.

7. The article of any preceding claim, wherein the fluoropolymer comprises a thermoplastic fluoropolymer and the cross-linked polymerization product of at least one fluorinated ene-functional reactant.

8. The article of any preceding claim, wherein the thermoplastic
fluoropolymer comprises a copolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride, and wherein the fluorinated ene-functional reactant comprises fluorinated cyclohexyl methyl acrylate.

9. The article of any preceding claim, wherein the coating has a thickness of about one quarter wavelength with respect to incident visible light and a refractive index of about the square root of the refractive index of the substrate.

10. The article of any preceding claim, wherein the coating has a thickness of approximately 1000-2000 angstroms.

11. The article of any of claims 1 to 8, wherein the coating has a thickness of about one quarter wavelength with respect to incident ultraviolet radiation and a refractive index of about the square root of the refractive index of the substrate.

12. The article of any of claims 1 to 8 and 11, wherein the coating has a thickness of about 400-1000 angstroms.

13. The article of any of claims 1 to 8, wherein the coating has a thickness of about one quarter wavelength with respect to incident infrared radiation and a refractive index of about the square root of the refractive index of the substrate.

14. The article of any of claims 1 to 8 and 13, wherein the coating has a thickness of between about 2000-2500 angstroms.

15. The article of any preceding claim, wherein the substrate comprises polyethylene terephthalate film.

16. The article of any preceding claim, wherein the substrate comprises polycarbonate film.

17. The article of any preceding claim, wherein the substrate comprises a high refractive index glass.

18. The article of any preceding claim, wherein the fluoropolymer comprises a thermoplastic fluoropolymer, and the coating further comprises an additional thermoplastic polymer different from said thermoplastic fluoropolymer, said additional thermoplastic polymer being selected to enhance the abrasion resistance of the coated article and to enhance adhesion of the coating to the surface of the substrate.

19. The article of any preceding claim, wherein the additional thermoplastic polymer comprises polymethyl methacrylate.

20. The article of any preceding claim, wherein the coated article exhibits improved light transmission at 500 nanometers of at least 2 percent compared with an uncoated substrate.

21. The article of any preceding claim, wherein the coated article exhibits an Abrasion Test 2 score of about 10 cycles or greater.

22. The article of any preceding claim, wherein the coated article exhibits an anti-fogging test score of 0.

23. The article of any preceding claim, wherein the article comprises a face shield.

24. The article of any preceding claim, wherein the article comprises protective eyeglasses.

25. The article of any preceding claim, wherein the article comprises a computer monitor screen.

26. A method of imparting anti-reflective, abrasion resistance, and anti-fogging properties to a substrate, the method comprising the steps of:
providing a substrate having a surface;
providing a coating composition on the surface of the substrate, the coating composition comprising a fluoropolymer and a fluorochemical surfactant; and causing the coating composition to harden on the surface of the substrate, said fluoropolymer and fluorochemical surfactant being selected such that the substrate coated with the coating composition is anti-reflective, abrasion resistant, and anti-fogging.

27. A method of imparting anti-reflective and abrasion resistance properties to a substrate, the method comprising the steps of:
providing a substrate having a surface;
providing a coating composition on the surface of the substrate such that the coating composition is adjacent the surface of the substrate, the coating
composition comprising a fluoropolymer selected such that the substrate coated with the coating composition is anti-reflective and abrasion resistant; and causing the coating composition to harden on the surface of the substrate.