US3365272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of synthetic faujasite containing exchangeable magnesium cations
Assignee: Air Products and Chemicals Inc
•
Filing: 1965-05-24
•
Granted: 1968-01-23
•
Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Edward B Cornelius
- 👤 James E Mcevoy
- 👤 Mills George Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:35
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2838; C01B33/2853; Y; Y10; Y10S; Y10S423/00; Y10S423/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
THE METHOD OF PREPARING AN ALUMINOSILICATE PRODUCT HAVING A CRYSTALLINE STRUCTURE CORRESPONDING TO A FAUJASITE AND HAVING ZEOLITICALLY BOUND MAGNESIUM CATIONS, WHICH METHOD CONSISTS OF: PREPARING AN AQUEOUS NUTRIENT MIXTURE CONTAINING A SOURCE OF SILICA, A SOURCE OF ALUMINA, SODIUM HYDROXIDE, AND MAGNESIUM HYDROXIDE IN WHICH THE UNIT RATIO OF SILICON ATOMS TO ALKALINE CATIONS IS WITHIN THE RANGE FROM 2.0 TO 5, THE UNIT MOLAR RATIO OF SODIUM HYDROXIDE TO MAGNESIUM HYDROXIDE IS WITHIN THE RANGE FROM ABOUT 4 TO ABOUT 20, THE SILICON ATOM TO ALUMINUM ATOM UNIT RATIO IS WITHIN THE RANGE FROM 5 TO 20, AND THE WATER TO ALKALINE CATION UNIT RATIO IS WITHIN THE RANGE FROM 50 TO 120; MAINTAINING SAID NUTRIENT SOLUTION AT QUIESCENT AGING CONDITIONS AT A TEMPERATURE WITHIN THE RANGE FROM 20* TO 30*C. DURING A PERIOD FROM ABOUT 5 TO ABOUT 200 HOURS; HEATING THE NUTRIENT SOLUTION GRADUALLY AND SUBSTANTIALLY QUIESCENTLY TO A TEMPERATURE WITHIN THE RANGE FROM ABOUT 80* TO ABOUT 98*C. FOR FROM 5 TO 40 HOURS; SEPARATING THE RESULTING CRYSTALS OF ALUMINOSILICATE FROM THE LIQUID; WASHING SUCH CRYSTALS; AND RECOVERING THE WASHED CRYSTALS.
Claim 2
Independent Claim
186 words
THE METHOD OF PREPARING AN ALUMINOSILICATE PRODUCT HAVING A CRYSTALLINE STRUCTURE CORRESPONDING TO A FAUJASITE AND HAVING ZEOLITICALLY BOUND MAGNESIUM CATIONS, WHICH METHOD CONSISTS OF: PREPARING AN AQUEOUS NUTRIENT MIXTURE CONTAINING A SOURCE OF SILICA, A SOURCE OF ALUMINA, SODIUM HYDROXIDE, AND MAGNESIUM HYDROXIDE IN WHICH THE UNIT RATIO OF SILICON ATOMS TO ALKALINE CATIONS IS WITHIN THE RANGE FROM 2.0 TO 5, THE UNIT MOLAR RATIO OF SODIUM HYDROXIDE TO MAGNESIUM HYDROXIDE IS WITHIN THE RANGE FROM ABOUT 4 TO ABOUT 20, THE SILICON ATOM TO ALUMINUM ATOM UNIT RATIO IS WITHIN THE RANGE FROM 5 TO 20, AND THE WATER TO ALKALINE CATION UNIT RATIO IS WITHIN THE RANGE FROM 50 TO 120; MAINTAINING SAID NUTRIENT SOLUTION AT QUIESCENT AGING CONDITIONS AT A TEMPERATURE WITHIN THE RANGE FROM 20* TO 30*C. DURING A PERIOD FROM ABOUT 5 TO ABOUT 200 HOURS; HEATING THE NUTRIENT SOLUTION GRADUALLY AND SUBSTANTIALLY QUIESCENTLY TO A TEMPERATURE WITHIN THE RANGE FROM ABOUT 80* TO ABOUT 98*C. FOR FROM 5 TO 40 HOURS; SEPARATING THE RESULTING CRYSTALS OF ALUMINOSILICATE FROM THE LIQUID; WASHING SUCH CRYSTALS; AND RECOVERING THE WASHED CRYSTALS.
References Cited (Backward Citations)
US2882244A
Cited
US3130007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |