US3949029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of porous shaped inorganic structures using gas-laden molecular sieve zeolites
Assignee: Bayer AG
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Filing: 1974-06-24
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Granted: 1976-04-06
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Expires: 1994-06-24
Abstract
Abstract In the production of a porous shaped inorganic structure wherein an inorganic solids-containing suspension is mixed with a gas-generating compound and the suspension is poured into a mold, the improvement which comprises employing as said gas-generating compound a molecular sieve zeolite laden with a gas.
Inventors
- 👤 Gunter Ulisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:36
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/02; C04B20/00; C04B20/10; C04B20/1018; C04B20/1022; Y; Y10; Y10S; Y10S264/00; Y10S264/05
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
87 words
In the production of a porous shaped inorganic structure where an aqueous suspension of inorganic solids in a liquid is mixed with a gas-generating compound and the suspension is poured into a mold, the improvement which comprises employing as said gas-generating compound about 0.5 to 10% by weight of the total solids of a molecular sieve zeolite laden with a gas, whereby said zeolite under the action of the water gives off the gas with which it is laden and thereby forms the pores of the structure.
Claim 2
Dependent Claim
87 words
In the production of a porous shaped inorganic structure where an aqueous suspension of inorganic solids in a liquid is mixed with a gas-generating compound and the suspension is poured into a mold, the improvement which comprises employing as said gas-generating compound about 0.5 to 10% by weight of the total solids of a molecular sieve zeolite laden with a gas, whereby said zeolite under the action of the water gives off the gas with which it is laden and thereby forms the pores of the structure.
Claim 3
Dependent Claim
19 words
The process according to claim 1, wherein the molecular sieve zeolite has a pore size of about 5 A.
Claim 4
Dependent Claim
31 words
The process according to claim 1, wherein the molecular sieve zeolite is laden with at least one gas selected from the group consisting of ethylene, propylene, n-butene-1, n-butene-2--, butadiene and acetylene.
Claim 5
Dependent Claim
36 words
The process according to claim 3, wherein the molecular sieve zeolite has a pore size of about 5 A and is added to the suspension in about 1 to 5% by weight of the total solids.
References Cited (Backward Citations)
US3140253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |