US4414254A
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Selective light-transmitting laminated structure
Assignee: Teijin Ltd
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Filing: 1981-12-23
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Granted: 1983-11-08
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Expires: 2001-12-23
Abstract
Abstract In a selective light-transmitting laminated structure comprising (a) a laminate composed of a transparent substrate and formed on at least one surface of the substrate, a thin metallic layer and/or a thin metal oxide layer, if required in combination with a thin film layer having a high refractive index, and (b) a protective layer composed mainly of a polymer having structural units of the general formula ##STR1## wherein R represents a hydrogen atom or a methyl group, as main structural units, the improvement wherein a urethan linkage exists in the interface between the laminate (a) and the protective layer (b).
Inventors
- 👤 Kaoru Iwata
- 👤 Toshio Nishihara
- 👤 Michisuke Ohe
- 👤 Yoichi Saito
- 👤 Akihiro Horike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:26
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/06; B32; B32B; B32B27/00; B32B27/06; B32B7/00; B32B7/04; B32B7/12; B32B2307/00; B32B2307/40; B32B2307/412; B32B2605/00; B32B2605/006; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31583; Y10T428/31605; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31699; Y10T428/31786; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
115 words
In a selective light-transmitting laminated structure comprising (a) a laminate composed of a transparent substrate and formed on at least one surface of the substrate, a thin metallic layer having a thickness of 30-500 Å if required in combination with a thin film layer having a high refractive index, and (b) a protective layer coated on said laminate (a) and composed mainly of a polymer having structural units of the general formula ##STR26## wherein R represents a hydrogen atom or a methyl group, as main structural units, the improvement wherein the corrosion resistance of said structure is improved by providing a urethan linkage in the interface between the laminate (a) and the protective layer (b).
Claim 2
Dependent Claim
115 words
In a selective light-transmitting laminated structure comprising (a) a laminate composed of a transparent substrate and formed on at least one surface of the substrate, a thin metallic layer having a thickness of 30-500 Å if required in combination with a thin film layer having a high refractive index, and (b) a protective layer coated on said laminate (a) and composed mainly of a polymer having structural units of the general formula ##STR26## wherein R represents a hydrogen atom or a methyl group, as main structural units, the improvement wherein the corrosion resistance of said structure is improved by providing a urethan linkage in the interface between the laminate (a) and the protective layer (b).
Claim 3
Dependent Claim
27 words
The structure of claim 1 wherein said urethan linkage is derived from a urethan linkage-containing polymer layer existing between the laminate (a) and the protective layer (b).
Claim 4
Dependent Claim
16 words
The structure of claim 2 wherein the protective layer (b) is free from a urethan linkage.
Claim 5
Dependent Claim
31 words
The structure of claim 2 wherein the protective layer (b) is composed substantially only of the structural units of the formula ##STR27## in which R is as defined in claim 1.
Claim 6
Dependent Claim
25 words
The structure of claim 2 wherein the urethan-linkage-containing polymer is insoluble in organic solvents used in forming a coating solution for the protective layer (b).
Claim 7
Dependent Claim
15 words
The structure of claim 2 wherein the urethan linkage-containing polymer has a three-dimensional network structure.
Claim 8
Dependent Claim
32 words
The structure of claim 2 wherein the urethan linkage-containing polymer is formed by the reaction of a polymer having a hydroxyl group in a side chain with a difunctional or higher polyisocyanate.
Claim 9
Dependent Claim
118 words
The structure of claim 7 wherein the polymer having a hydroxyl group in a side chain is a polymer containing at least 2 mole% of structural units of the following formula ##STR28## wherein R 2 represents a hydrogen atom or a methyl group, R 3 represents a hydrogen atom, a group of the formula --CH 2 --OR 7 in which R 7 represents an alkyl group having 1 to 6 carbon atoms or a phenyl group, or a group of the formula ##STR29## in which R 5 and R 6 are identical or different and each represents an alkyl group having 1 to 6 carbon atoms, a 2-hydroxyethyl group or a 2-hydroxypropyl group, and n is an integer.
Claim 10
Dependent Claim
130 words
The structure of claim 7 wherein the polymer having a hydroxyl group in a side chain is a hydroxyl-containing copolymer composed mainly of structural units of the formula ##STR30## wherein R 1 represents a hydrogen atom or a methyl group, m is an integer, and R 2 represents a hydrogen atom or a methyl group, R 3 represents a hydrogen atom, a group of the formula --CH 2 --OR 7 in which R 7 represents an alkyl group having 1 to 6 carbon atoms or a phenyl group, or a group of the formula ##STR31## in which R 5 and R 6 are identical or different and each represents an alkyl group having 1 to 6 carbon atoms, a 2-hydroxyethyl group or a 2-hydroxypropyl group, and n is an integer.
Claim 11
Dependent Claim
18 words
The structure of claim 1 wherein the polymer which constitutes the protective layer (b) contains said urethan linkage.
Claim 12
Dependent Claim
155 words
The structure of claim 10 wherein the protective layer (b) is composed of a crosslinked urethan polymeric compound formed by reacting a hydroxyl-containing copolymer composed mainly of structural units of the formula ##STR32## wherein R 1 represents a hydrogen atom or a methyl group, R 2 represents a hydrogen atom or a methyl group, R 3 represents a hydrogen atom, a group of the formula --CH 2 --OR 7 in which R 7 represents an alkyl group having 1 to 6 carbon atoms or a phenyl group, or a group of of the formula ##STR33## in which R 5 and R 6 are identical or different and each represents an alkyl group having 1 to 6 carbon atoms, a 2-hydroxyethyl group or a 2-hydroxypropyl group, m is an integer and n is an integer with a polyisocyanate whereby at least a part of the hydroxyl groups in the copolymer reacts to form a urethan crosslinkage.
Claim 13
Dependent Claim
20 words
The structure of any one of claims 1 to 10 which is used as a windowpane in buildings and vehicles.
Claim 14
Dependent Claim
30 words
The structure of claim 12 wherein the windowpane is an openable, double window, and the laminated structure is provided on that surface of the indoor-facing glass plate which faces outdoors.
Claim 15
Dependent Claim
23 words
The structure of claim 2 wherein the proportion of the urethan linkage in the urethan linkage-containing polymer is from 0.1 to 5 millimoles/g.
Claim 16
Dependent Claim
55 words
The structure of claim 2 wherein the layer of the urethan linkage-containing polymer between the laminate (a) and the protective layer (b) has a thickness of from about 0.1 to about 0.4 micron and the protective layer (b) coated on the urethan linkage-containing polymer has a thickness of from about 2.0 to about 3.0 microns.
Claim 17
Dependent Claim
24 words
The structure of claim 10 or claim 11 wherein the protective layer (b) containing said urethan linkage has a thickness of about 2 microns.
Claim 18
Dependent Claim
26 words
The structure of claim 1 wherein said thin film layer having a high refractive index is present and has a thickness of 40 to 600 Å.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |