US5676885A
Expired / Lapsed
US
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Thermostable polarizers
Assignee: Bayer AG
•
Filing: 1995-08-18
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Granted: 1997-10-14
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Expires: 2015-08-18
Abstract
Abstract Thermostable, flexible polarizers having a polarizing layer of a polyacetylene-containing polymer are obtained if their surfaces are sealed by means of silicate layers.
Inventors
- 👤 Karl-Heinz Aleksander Ostoja Starzewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:45
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; G; G02; G02B; G02B1/00; G02B1/04; G02B5/00; G02B5/30; G02B5/3025; G02B5/3033; B32B2307/00; B32B2307/40; B32B2307/42; B32B2331/00; B32B2331/04; B32B2551/00; C08J2349/00; C08J2483/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
30 words
A thermostable, flexible polarizer having a polarizing layer of a polyacetylene-containing polymer and having silicate-sealed surfaces, wherein the sealing of the surface is carried out by means of silicate solution.
Claim 2
Dependent Claim
30 words
A thermostable, flexible polarizer having a polarizing layer of a polyacetylene-containing polymer and having silicate-sealed surfaces, wherein the sealing of the surface is carried out by means of silicate solution.
Claim 3
Dependent Claim
27 words
The polarizer of claim 1, which additionally has transparent, flexible outer layers applied to both sides and bonded to the polarizing layer by means of silicate layers.
Claim 4
Dependent Claim
23 words
The polarizer of claim 1, wherein the polarizing layer is treated with a silane or a borate before coating with the silicate solution.
Claim 5
Dependent Claim
16 words
The polarizer of claim 1, wherein the silicate solution is admixed with a silane and/or borate.
Claim 6
Dependent Claim
49 words
The polarizer of claim 3, wherein the silane conforms to the formula Si(R.sub.1).sub.n (R.sub.2).sub.4-n in which the R 1 radicals, independently of one another, are halogen or alkoxy, the R 2 radicals, independently of one another, are alkyl or alkenyl, and n is the number 2, 3 or 4.
Claim 7
Dependent Claim
15 words
The polarizer of claim 1, wherein the polyacetylene-containing polymer is at least partly polyvinyl alcohol.
Claim 8
Dependent Claim
10 words
The polarizer of claim 1, which contains additional dichroic substances.
Claim 9
Dependent Claim
23 words
The polarizer of claim 2, wherein the outer layers are treated with a silane or a borate before coating with the silicate solution.
Claim 10
Dependent Claim
49 words
The polarizer of claim 8, wherein the silane conforms to the formula Si(R.sub.1).sub.n (R.sub.2).sub.4-n in which the R 1 radicals, independently of one another, are halogen or alkoxy, the R 2 radicals, independently of one another, are alkyl or alkenyl, and n is the number 2, 3 or 4.
Claim 11
Dependent Claim
39 words
A thermostable, flexible polarizer having a polarizing layer of a polyacetylene-containing polymer and having silicate-sealed surfaces with a silicate solution, wherein the sealing of the surface is carried out by means of sodium water glass or potassium water glass.
Claim 12
Dependent Claim
39 words
A thermostable, flexible polarizer having a polarizing layer of a polyacetylene-containing polymer and having silicate-sealed surfaces with a silicate solution, wherein the sealing of the surface is carried out by means of sodium water glass or potassium water glass.
Claim 13
Dependent Claim
27 words
The polarizer of claim 10, which additionally has transparent, flexible outer layers applied to both sides and bonded to the polarizing layer by means of silicate layers.
Claim 14
Dependent Claim
23 words
The polarizer of claim 10, wherein the polarizing layer is treated with a silane or a borate before coating with the silicate solution.
Claim 15
Dependent Claim
16 words
The polarizer of claim 10, wherein the silicate solution is admixed with a silane and/or borate.
Claim 16
Dependent Claim
49 words
The polarizer of claim 12, wherein the silane conforms to the formula Si(R.sub.1).sub.n (R.sub.2).sub.4-n in which the R 1 radicals, independently of one another, are halogen or alkoxy, the R 2 radicals, independently of one another, are alkyl or alkenyl, and n is the number 2, 3 or 4.
Claim 17
Dependent Claim
15 words
The polarizer of claim 10, wherein the polyacetylene-containing polymer is at least partly polyvinyl alcohol.
Claim 18
Dependent Claim
10 words
The polarizer of claim 10, which contains additional dichroic substances.
Claim 19
Dependent Claim
33 words
The polarizer of claim 10, wherein the sealing of the surface is carried out by means of from 100 g to 2 g of water glass (solid)/m 2 of area to be sealed.
Claim 20
Dependent Claim
23 words
The polarizer of claim 11, wherein the outer layers are treated with a silane or a borate before coating with the silicate solution.
Claim 21
Dependent Claim
49 words
The polarizer of claim 18, wherein the silane conforms to the formula Si(R.sub.1).sub.n (R.sub.2).sub.4-n in which the R 1 radicals, independently of one another, are halogen or alkoxy, the R 2 radicals, independently of one another, are alkyl or alkenyl, and n is the number 2, 3 or 4.
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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) | 2000-10-13 | 2001-04-14 | 2001-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-13 | 2005-04-14 | 2005-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-13 | 2009-04-14 | 2009-10-14 | $7700.00 | Window Closed / Lapsed |