US4034129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming an inorganic thermal radiation control
Assignee: Rohm and Haas Co
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Filing: 1975-07-18
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Granted: 1977-07-05
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Expires: 1995-07-18
Abstract
Abstract A method is disclosed for forming a water-based inorganic coating capable of controlling thermal radiation which method comprises applying a layer of a semiconductor pigment upon a highly reflective substrate having a metallic layer and overcoating the pigment layer with a layer of an alkali metal silicate, and heat curing the silicate layer at above ambient temperature, where the two-layer laminate so obtained exhibits high absorbance of visible spectral radiation and low emissivity of thermal radiation.
Inventors
- 👤 Paul A. Kittle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:29
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D5/00; B05D7/50; B05D7/52; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31855
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
57 words
A method for producing a two-layer laminate water-based thermal radiation control coating upon a metallic or metallized substrate which comprises depositing upon the substrate a layer of a semiconductor pigment solution, drying said pigment layer, overcoating the pigment layer with a layer of an alkali metal silicate solution and heat-curing the silicate layer at above ambient temperature.
Claim 2
Independent Claim
57 words
A method for producing a two-layer laminate water-based thermal radiation control coating upon a metallic or metallized substrate which comprises depositing upon the substrate a layer of a semiconductor pigment solution, drying said pigment layer, overcoating the pigment layer with a layer of an alkali metal silicate solution and heat-curing the silicate layer at above ambient temperature.
Claim 3
Dependent Claim
27 words
The method of claim 1, where the semiconductor pigment is a compound selected from copper oxide, iron oxides, chromium oxides, nickel oxide, nickel-zinc sulfide and lead sulfide.
Claim 4
Independent Claim
53 words
A method for producing a thermal radiation control coating upon an aluminum substrate which comprises, depositing upon the aluminum a layer of an iron oxide aqueous solution, drying said iron oxide layer, overcoating the iron oxide layer with a layer of sodium silicate aqueous solution and heat-curing the silicate at above ambient temperature.
Claim 5
Independent Claim
53 words
A method for producing a thermal radiation control coating upon an aluminum substrate which comprises, depositing upon the aluminum a layer of an iron oxide aqueous solution, drying said iron oxide layer, overcoating the iron oxide layer with a layer of sodium silicate aqueous solution and heat-curing the silicate at above ambient temperature.
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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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |