US5846650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-reflective, abrasion resistant, anti-fogging coated articles and methods
Assignee: 3M Co
•
Filing: 1996-05-10
•
Granted: 1998-12-08
•
Expires: 2016-05-10
Abstract
Abstract An article comprising substrate having a surface and a coating on the surface of the substrate, the coating comprising a fluoropolymer and a fluorochemical surfactant. The fluoropolymer and the fluorochemical surfactant are selected such that the article is anti-reflective, abrasion resistant and anti-fogging. Methods of making the same are also described.
Inventors
- 👤 John H. Ko
- 👤 Simon S. Fung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:35
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/10; G02B1/14; G02B1/11; G02B1/113; G02B1/18; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31507; Y10T428/3154; Y10T428/31544; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
46 words
An article comprising an optically transparent 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.
Claim 2
Dependent Claim
46 words
An article comprising an optically transparent 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.
Claim 3
Dependent Claim
31 words
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.
Claim 4
Dependent Claim
34 words
The article of claim 2 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.
Claim 5
Dependent Claim
24 words
The article of claim 1 wherein the fluoropolymer comprises a thermoplastic fluoropolymer and the cross-linked polymerization product of at least one fluorinated ene-functional reactant.
Claim 6
Dependent Claim
29 words
The article of claim 4 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.
Claim 7
Dependent Claim
12 words
The article of claim 1 wherein the article comprises a face shield.
Claim 8
Dependent Claim
11 words
The article of claim 1 wherein the article comprises protective eyeglasses.
Claim 9
Dependent Claim
13 words
The article of claim 1 wherein the article comprises a computer monitor screen.
Claim 10
Dependent Claim
38 words
The article of claim 1 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.
Claim 11
Dependent Claim
15 words
The article of claim 1 wherein the coating has a thickness of approximately 1000-2000 angstroms.
Claim 12
Dependent Claim
38 words
The article of claim 1 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.
Claim 13
Dependent Claim
15 words
The article of claim 1 wherein the coating has a thickness of about 400-1000 angstroms.
Claim 14
Dependent Claim
38 words
The article of claim 1 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.
Claim 15
Dependent Claim
16 words
The article of claim 1 wherein the coating has a thickness of between about 2000-2500 angstroms.
Claim 16
Dependent Claim
12 words
The article of claim 1 wherein the substrate comprises polyethylene terephthalate film.
Claim 17
Dependent Claim
11 words
The article of claim 1 wherein the substrate comprises polycarbonate film.
Claim 18
Dependent Claim
14 words
The article of claim 1 wherein the substrate comprises a high refractive index glass.
Claim 19
Dependent Claim
54 words
The article of claim 1 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.
Claim 20
Dependent Claim
13 words
The article of claim 18 wherein the additional thermoplastic polymer comprises polymethyl methacrylate.
Claim 21
Dependent Claim
25 words
The article of claim 1 wherein the coated article exhibits improved light transmission at 500 nanometers of at least 2 percent compared with uncoated substrate.
Claim 22
Dependent Claim
21 words
The article of claim 1 wherein the coated article exhibits an Abrasion Test 2 score of about 10 cycles or greater.
Claim 23
Dependent Claim
16 words
The article of claim 1 wherein the coated article exhibits an anti-fogging test score of 0.
Claim 24
Independent Claim
82 words
A method of imparting anti-reflective, abrasion resistance, and anti-fogging properties to an optically clear 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.
Claim 25
Independent Claim
82 words
A method of imparting anti-reflective, abrasion resistance, and anti-fogging properties to an optically clear 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.
Claim 26
Dependent Claim
32 words
The method of claim 23 wherein the fluoropolymer comprises a polyether fluoropolymer having functional end groups available for cross-linking, and wherein the coating composition further comprises at least one fluorinated ene-functional reactant.
Claim 27
Dependent Claim
67 words
The method of claim 24 wherein the coating composition comprises a photoinitiator and wherein the step of causing the coating composition to harden on the surface of the substrate comprises curing the coating composition on the surface of the substrate to produce a hardened coating on the surface of the substrate comprising the cross-linked polymerization product of the polyether fluoropolymer and at least one fluorinated ene-functional reactant.
Claim 28
Dependent Claim
12 words
The method of claim 23 wherein the fluoropolymer comprises a thermoplastic fluoropolymer.
Claim 29
Dependent Claim
17 words
The method of claim 26 wherein the coating composition further comprises at least one fluorinated ene-functional reactant.
Claim 30
Dependent Claim
51 words
The method of claim 27 wherein step of causing the coating composition to harden comprises curing the coating composition on the surface of the substrate to produce a coating on the surface of the substrate comprising the thermoplastic fluoropolymer and the cross-linked polymerization product of at least one fluorinated ene-functional reactant.
Claim 31
Dependent Claim
47 words
The method of claim 26 wherein the coating composition further comprises an additional thermoplastic polymer different from said thermoplastic fluoropolymer, said additional thermoplastic fluoropolymer being selected to enhance adhesion resistance of the coated article and to enhance adhesion of the coating to the surface of the substrate.
Claim 32
Dependent Claim
31 words
The method of claim 29 wherein step of causing the coating composition to harden on the surface of the substrate comprises drying the coating composition on the surface of the substrate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-07 | 2002-06-08 | 2002-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-07 | 2006-06-08 | 2006-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-07 | 2010-06-08 | 2010-12-08 | $7700.00 | Window Closed / Lapsed |