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US5518810A
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US
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Infrared ray cutoff material and infrared cutoff powder use for same
Assignee: Mitsubishi Materials Corp
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Filing: 1994-06-30
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Granted: 1996-05-21
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Expires: 2014-06-30
Abstract
Abstract An infrared-ray cutoff material having a structure in which tin-doped indium oxide powder (ITO) powder is dispersed in an inorganic or organic matrix. The material can be in the form of a coating on a substrate available by applying a composition comprising ITO powder, a binder (an organic resin and/or a metal alkoxide) and a solvent (an organic solvent, water and/or alcohol) onto the substrate and drying the same. It may also be in the form of a film, a sheet, a fiber or other shape available by forming a composition made by dispersing ITO powder in an organic polymer. The ITO powder should preferably have an x-value of from 0.220 to 0.295 and a y-value of from 0.235 to 0.352 on the xy chromaticity scale, a lattice constant of from 10.110 to 10.160 Å, and a minimum cutoff wavelength of up to 1,000 nm. The infrared-ray cutoff material of the present invention is transparent within the visible region and can totally cut off infrared rays of wavelengths ranging from relatively shorter ones.
Inventors
- 👤 Akira Nishihara
- 👤 Toshiharu Hayashi
- 👤 Masahiro Sekiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:04
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/02; G; G02; G02B; G02B5/00; G02B5/20; G02B5/208; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/259; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
63 words
An infrared-ray cutoff material which comprises a tin-doped indium oxide powder dispersed in an organic or inorganic matrix, said powder having a color tone on the xy chromaticity scale represented by an x-value of from 0.220 to 0.295 and a y-value of from 0.235 to 0.325, and said powder having a crystal lattice constant within a range of from 10.110 to 10.160 Å.
Claim 2
Dependent Claim
63 words
An infrared-ray cutoff material which comprises a tin-doped indium oxide powder dispersed in an organic or inorganic matrix, said powder having a color tone on the xy chromaticity scale represented by an x-value of from 0.220 to 0.295 and a y-value of from 0.235 to 0.325, and said powder having a crystal lattice constant within a range of from 10.110 to 10.160 Å.
Claim 3
Dependent Claim
14 words
An infrared-ray cutoff material as claimed in claim 1, wherein said matrix is transparent.
Claim 4
Dependent Claim
23 words
An infrared-ray cutoff material as claimed in claim 1, wherein; said material is in the form of a coating formed on a substrate.
Claim 5
Dependent Claim
18 words
An infrared-ray cutoff material as claimed in claim 3, wherein: said substrate is made of glass or plastics.
Claim 6
Dependent Claim
38 words
An infrared-ray cutoff material as claimed in claim 3, wherein the material of said matrix is selected from the group consisting of transparent organic resins, and inorganic metal oxides made by hydrolysis and calcination of a metal alkoxide.
Claim 7
Dependent Claim
37 words
An infrared-ray cutoff material as claimed in claim 1, wherein said material is in a form selected from the group consisting of a film, a sheet, a fiber, a panel, a bar, a tube and three-dimensional shapes.
Claim 8
Dependent Claim
16 words
An infrared-ray cutoff material as claimed in claim 6, wherein: said matrix is an organic polymer.
Claim 9
Dependent Claim
28 words
An infrared-ray cutoff material as claimed in claim 6, wherein said material is in the form of a film which is adhered to the surface of a substrate.
Claim 10
Dependent Claim
37 words
An infrared-ray cutoff material as claimed in claim 1, wherein said tin-doped indium oxide powder can totally cut off more than 90% of infrared rays on the longer wavelength side from a wavelength of about 700 nm.
Claim 11
Dependent Claim
26 words
An infrared-ray cutoff material as claimed in claim 1, wherein said tin-doped indium oxide powder has an average primary particle size of up to 0.2 μm.
Claim 12
Dependent Claim
26 words
An infrared-ray cutoff material as claimed in claim 10, wherein said tin-doped indium oxide powder has an average primary particle size of up to 0.1 μm.
Claim 13
Dependent Claim
45 words
A method of manufacturing an infrared-ray cutoff material as claimed in claim 3, which comprises the steps of: applying a composition comprising one or more kinds of binder, a tin-doped indium oxide powder, and a solvent onto a substrate, and drying the thus applied coating.
Claim 14
Dependent Claim
21 words
A method as claimed in claim 12, wherein said solvent is an organic solvent, and said binder is an organic resin.
Claim 15
Dependent Claim
53 words
A method as claimed in claim 12, wherein said solvent is selected from the group consisting of water and alcohol, and said binder is selected from the group consisting of (a) alkoxides of silicon, aluminium, zirconium and titanium and partial hydrolyzates thereof, and (b) organic resins soluble in, or dispersible in, said solvent.
Claim 16
Dependent Claim
39 words
A method as claimed in claim 12, wherein said composition contains, relative to 100 parts by weight of ITO powder, 1 to 2,000 parts by weight of said binder and 5 to 5,000 parts by weight of said solvent.
Claim 17
Dependent Claim
31 words
A method of manufacturing the infrared-ray cutoff material as claimed in claim 6, wherein a composition comprising said organic polymer and ITO powder dispersed therein is formed into a desired shape.
Claim 18
Dependent Claim
29 words
A method as claimed in claim 16, wherein said composition contains, relative to 100 parts by weight of ITO powder, 25 to 50,000 parts by weight of said polymer.
Claim 19
Dependent Claim
72 words
A tin-doped indium oxide powder having an infrared-ray cutoff function, which has a color tone as represented on the xy chromaticity scale of an x-value within a range of from 0.220 to 0.295 and a y-value within a range of from 0.235 to 0.325, a lattice constant within a range of from 10.110 to 10.160 Å, and a minimum cutoff wavelength of up to 1,000 nm in or near the infrared region.
Claim 20
Dependent Claim
72 words
A tin-doped indium oxide powder having an infrared-ray cutoff function, which has a color tone as represented on the xy chromaticity scale of an x-value within a range of from 0.220 to 0.295 and a y-value within a range of from 0.235 to 0.325, a lattice constant within a range of from 10.110 to 10.160 Å, and a minimum cutoff wavelength of up to 1,000 nm in or near the infrared region.
Claim 21
Dependent Claim
24 words
A tin-doped indium oxide powder as claimed in claim 18, wherein said powder has an average primary particle size of up to 0.2 μm.
Claim 22
Dependent Claim
24 words
A tin-doped indium oxide powder as claimed in claim 19, wherein said powder has an average primary particle size of up to 0.1 μm.
References Cited (Backward Citations)
US4937148A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1999-05-21 | 1999-11-20 | 2000-05-21 | $2000.00 | Window Closed / Lapsed |
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