US5139879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoropolymer blend anti-reflection coatings and coated articles
Assignee: Honeywell International Inc
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Filing: 1991-11-21
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Granted: 1992-08-18
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Expires: 2011-11-21
Abstract
Abstract Solid bodies having a reflective surface are provided with an anti-reflection coating of a fluoropolymer blends of (1) a terpolymer composition derived from (a) perfluoroalkylakyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) hydroxyl- containing acrylate or methacrylate; and (2) an amorphous fluoropolymer.
Inventors
- 👤 Shaul M. Aharoni
- 👤 Ajay Nahata
- 👤 James T. Yardley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:19
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D133/00; C09D133/04; C09D133/14; C09D133/16; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L33/00; C08L33/04; C08L33/14; C08L33/16; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
251 words
A solid body having a reflective surface, having deposited thereon as an anti-reflection coating a layer of a polymeric composition comprising a blend of (a) from about 1 to about 95 percent by weight of amorphous fluoropolymer, with (b) from about 5 to about 99 percent by weight of a fluorinated copolymer having a polymer chain composed of --X.sub.s --Y.sub.t --Z.sub.u -- units, wherein s, t and u represent weight proportions of the respective X, Y and Z units, and have values within the ranges of s=from about 0.5 to about 0.995; t=from about 0.0025 to about 0.4975; and u=from about 0.0025 to about 0.4975; with the sum of s+t+u being 1; X represents units of the composition ##STR8## wherein R 1 is H, --CH 3 , or mixtures thereof; p is 1 or 2; n is an integer of from about 1 to about 40; Y represents units of the composition ##STR9## wherein R 2 is H, --CH 3 or --CH 2 COOH; Z represents units of the composition ##STR10## wherein R 3 is H, --CH 3 , or CH 2 COOC m H 2m+1 , wherein m is an integer of from about 1 to about 4, and R 4 is an alkylene bridging group, straight chain, branched or cyclic, having from 1 to about 8 carbon atoms; wherein the X, Y and Z units may be arranged in any sequence, said amorphous fluoropolymer retainting its amorphicity in said blend and not phase separating during or after any curing.
Claim 2
Dependent Claim
251 words
A solid body having a reflective surface, having deposited thereon as an anti-reflection coating a layer of a polymeric composition comprising a blend of (a) from about 1 to about 95 percent by weight of amorphous fluoropolymer, with (b) from about 5 to about 99 percent by weight of a fluorinated copolymer having a polymer chain composed of --X.sub.s --Y.sub.t --Z.sub.u -- units, wherein s, t and u represent weight proportions of the respective X, Y and Z units, and have values within the ranges of s=from about 0.5 to about 0.995; t=from about 0.0025 to about 0.4975; and u=from about 0.0025 to about 0.4975; with the sum of s+t+u being 1; X represents units of the composition ##STR8## wherein R 1 is H, --CH 3 , or mixtures thereof; p is 1 or 2; n is an integer of from about 1 to about 40; Y represents units of the composition ##STR9## wherein R 2 is H, --CH 3 or --CH 2 COOH; Z represents units of the composition ##STR10## wherein R 3 is H, --CH 3 , or CH 2 COOC m H 2m+1 , wherein m is an integer of from about 1 to about 4, and R 4 is an alkylene bridging group, straight chain, branched or cyclic, having from 1 to about 8 carbon atoms; wherein the X, Y and Z units may be arranged in any sequence, said amorphous fluoropolymer retainting its amorphicity in said blend and not phase separating during or after any curing.
Claim 3
Dependent Claim
91 words
A solid body according to claim 1 wherein the amorphous fluoropolymer in said blend is a copolymer of tetrafluoroethylene and a comonomer selected from the group consisting of CH 2 ═CHF; CH 2 ═CF 2 ; CF 2 ═CHF; CH 2 ═CH--C n F 2n=1 ; CF 2 ═CClF; CF 2 ═CF--CF 3 ; CF 2 ═CF--O--C n F 2n=1 ; CF 2 ═CF--O--CF 2 CF(CF 3 )--O--CF 2 CF 2 SO 2 F; CF 2 ═CF--O--CF 2 CF(CF 3 )--O--CF 2 CF 2 COOCH 3 and ##STR11## and mixtures thereof.
Claim 4
Dependent Claim
21 words
A solid body according to claim 1 wherein the amorphous fluoropolymer in said blend is a copolymer of tetrafluoroethylene and ##STR12##
Claim 5
Dependent Claim
18 words
An anti-reflection coated solid body according to claim 1 wherein in said fluorinated copolymer R 1 is H.
Claim 6
Dependent Claim
20 words
An anti-reflection coated solid body according to claim 1 wherein in said fluorinated copolymer R 1 is --CH 3 .
Claim 7
Dependent Claim
29 words
An anti-reflection coated solid body according to claim 1 wherein in said fluorinated copolymer X represents a mixture of units bearing H and --CH 3 as R 1 substituents.
Claim 8
Dependent Claim
25 words
An anti-reflection coated solid body according to any one of claims 1, 2 or 3 wherein Y and Z are present in about equimolar proportions.
Claim 9
Dependent Claim
20 words
An anti-reflection coated solid body according to any one of claims 1 through 6 wherein said fluorinated copolymer is cross-linked.
Claim 10
Dependent Claim
36 words
An anti-reflection coated solid body according to claim 8, wherein cross-linking of said fluorinated copolymer was effected by heat treatment at temperature between about 120° C. and about 180° C. for time sufficient to effect cross-linking.
Claim 11
Dependent Claim
19 words
An anti-reflection coated solid body according to claim 8, wherein cross-linking was effected by means of a cross-linking agent.
Claim 12
Dependent Claim
15 words
An anti-reflection coated solid body according to any one of claim 8 which is transparent.
Claim 13
Dependent Claim
26 words
An anti-reflection coated solid body according to claim 11 wherein the body is selected from the group consisting of optical lenses, eyeglasses, windows and polymer film.
Claim 14
Dependent Claim
71 words
An anti-reflection coated solid body wherein the anti-reflection coating comprises at least 2 layers, a first layer in direct contact with the body, said first layer comprising a polymer having a refractive index higher than the refractive index of the body, and a second layer deposited onto said first layer, wherein said second layer is a fluoropolymer according to claim 1 and has a lower refractive index than said solid body.
Claim 15
Dependent Claim
18 words
An anti-reflection coated solid body according to claim 13 wherein the fluoropolymer in said second layer is cross-linked.
Claim 16
Dependent Claim
35 words
An anti-reflection coated solid body according to claim 14 wherein cross-linking of said fluoropolymer was effected by heat treatment at temperature between about 120° C. and about 180° C. for time sufficient to effect cross-linking.
Claim 17
Dependent Claim
18 words
An anti-reflection coated solid body according to any one of claims 13, 14 or 15 which is transparent.
Claim 18
Dependent Claim
26 words
An anti-reflection coated solid body according to claim 16 wherein the body is selected from the group consisting of optical lenses, eyeglasses, windows and polymer film.
Claim 19
Dependent Claim
29 words
An anti-reflection coated solid body according to any one of claims 8, 13 or 14 which is adapted for viewing indicia located on or directly below said reflective surface.
Claim 20
Dependent Claim
30 words
An anti-reflection coated solid body according to claim 18 which is selected from the group consisting of flat panel displays, cathode ray tubes, glossy display surfaces or glossy photographic prints.
Claim 21
Dependent Claim
44 words
A transferable anti-reflection coated film according to any one of claims 8, 13, 14 or 15 comprising a transparent polymer film, which has the anti-reflection coating deposited on one side, and which is provided with a pressure sensitive adhesive coating on the opposite side.
Claim 22
Dependent Claim
23 words
A transferable anti-reflection coated film according to claim 20, further comprising a releasable protective layer in contact with said pressure sensitive adhesive coating.
Claim 23
Dependent Claim
15 words
A solid body having applied thereto a transferable anti-reflection coated film according to claim 20.
Claim 24
Dependent Claim
10 words
A solid body according to claim 22 which is transparent.
Claim 25
Dependent Claim
18 words
A solid body according to claim 22 which is a cathode ray tube or a liquid crystal display.
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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) | 1995-08-18 | 1996-02-17 | 1996-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-18 | 2000-02-17 | 2000-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-18 | 2004-02-17 | 2004-08-18 | $7700.00 | Window Closed / Lapsed |