US5225244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric anti-reflection coatings and coated articles
Assignee: Honeywell International Inc
•
Filing: 1992-08-14
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Granted: 1993-07-06
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Expires: 2012-08-14
Abstract
Abstract Solid bodies having a reflective surface are provided with an anti-reflection coating of a terpolymer composition derived from (a) perfluoroalkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) hydroxyl- containing acrylate or methacrylate.
Inventors
- 👤 Shaul M. Aharoni
- 👤 Michael J. McFarland
- 👤 Ajay Nahata
- 👤 James T. Yardley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:16
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
208 words
The method of providing an anti-reflection coating on a solid body having a reflective surface, which comprises depositing on said surface a layer of a polymeric composition comprising fluorinated copolymer having a polymer chain composed of ##STR6## 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 0.99; t=from about 0.005 to about 0.495; and u=from about 0.005 to about 0.495; with the sum of s+t+u being 1; X represents units of the composition ##STR7## 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 ##STR8## wherein R 2 is H, --CH 3 or --CH 2 COOH; Z represents units of the composition ##STR9## 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.
Claim 2
Independent Claim
208 words
The method of providing an anti-reflection coating on a solid body having a reflective surface, which comprises depositing on said surface a layer of a polymeric composition comprising fluorinated copolymer having a polymer chain composed of ##STR6## 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 0.99; t=from about 0.005 to about 0.495; and u=from about 0.005 to about 0.495; with the sum of s+t+u being 1; X represents units of the composition ##STR7## 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 ##STR8## wherein R 2 is H, --CH 3 or --CH 2 COOH; Z represents units of the composition ##STR9## 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.
Claim 3
Dependent Claim
35 words
The method of claim 1 further comprising heating said layer of a polymeric composition at a temperature between about 120° C. and about 180° C. for time sufficient to effect cross-linking of said fluorinated copolymer.
Claim 4
Dependent Claim
29 words
The method of making an anti-reflection coated body according to claim 1, which comprises applying a solution of said fluorinated copolymer to said reflective surface, and evaporating the solvent.
Claim 5
Dependent Claim
32 words
The method of claim 3, further comprising heating the resultant coating at a temperature between about 120° C. and about 180° C. for time sufficient to effect cross-linking of said fluorinated copolymer.
Claim 6
Dependent Claim
15 words
The method of claim 3, wherein the solution of said copolymer is applied by spin-coating.
Claim 7
Dependent Claim
23 words
The method of claim 3, wherein the solution of said copolymer is applied by means of dipping said solid body into said solution.
Claim 8
Dependent Claim
11 words
The method of claim 4, wherein said solid body is transparent.
Claim 9
Dependent Claim
54 words
The method of claim 1, comprising the steps of depositing two layers of anti-reflection coatings, wherein the first layer which is in direct contact with said body comprises a polymer having a refractive index higher than the refractive index of said body, and the second layer has a lower refractive index than said body.
Claim 10
Dependent Claim
24 words
The method of claim 8 involving the step of applying a solution of said fluorinated copolymer to the first layer, and evaporating the solvent.
Claim 11
Dependent Claim
31 words
The method of claim 9 further comprising heating the second layer at temperature between about 120° C. and about 180° C. for time sufficient to effect cross-linking of the fluorinated copolymer.
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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) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |