US3663249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for insolubilizing sodium silicate foam
Assignee: Owens Corning Canada Inc
•
Filing: 1970-03-24
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Granted: 1972-05-16
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Expires: 1990-03-24
Abstract
Abstract Insoluble silicate foams which exhibit good permanence and weather resistance for use in structural applications may be produced by foaming a dry reaction mixture of hydrated silicate and complexing agent which has been prepared by mixing particulate alkali metal or alkaline earth metal silicate and the complexing agent and treating tat mixture with saturated steam at the hydration temperature of the silicate, thereby achieving uniform distribution and penetration of the reactants.
Inventors
- 👤 Ramesh P Rao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:06
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C03; C03C; C03C11/00; C03C11/007; C04B28/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
15 words
A method as in claim 1 wherein the silicate material comprises calcium or magnesium silicate.
Claim 2
Dependent Claim
34 words
A method as in claim 1 wherein the complexing agent is a compound of a metal chosen from the group consisting of aluminum, boron, titanium, zirconium, iron, chromium, calcium, magnesium, molybdenum, zinc, manganese, vanadium.
Claim 3
Dependent Claim
15 words
A method as in claim 1 wherein the silicate material comprises sodium or potassium silicate.
Claim 4
Dependent Claim
19 words
A method as in claim 4 wherein the hydration temperature is in the range of 200* to 600* F.
Claim 5
Dependent Claim
22 words
A method as in claim 4 wherein the complexing agent is present in an amount of 5 to 30 percent by weight.
Claim 6
Dependent Claim
34 words
A process as in claim 4 wherein the complexing agent is a compound of a metal chosen from the group consisting of aluminum, boron, titanium, zirconium, iron, chromium, calcium, magnesium, molybdenum, zinc, manganese, vanadium.
Claim 7
Dependent Claim
35 words
A method as in claim 4 wherein the compound has an anion chosen from the group consisting of acetate, formate, formoacetate, phosphate, sulfate, borate, nitrate, carbonate, oxide, hydroxide, fluoride, chloride, pyrosulfate, pyrophosphate, titanate, and molybdate.
Claim 8
Dependent Claim
30 words
A method as in claim 4 wherein the complexing agent is chosen from the group consisting of K2Ti6O13, Al F3, Ti (OH)4, Al(OH)3, Ca B4 O7, H3BO3 and molybdic acid.
References Cited (Backward Citations)
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |