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US3309211A
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US
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Method of treating clay and clay produced thereby
Assignee: Erbsloeh Holding GmbH
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Filing: 1964-03-04
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Granted: 1967-03-14
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Expires: 1984-03-04
Abstract
No abstract record available.
Inventors
- 👤 Weiss Armin
- 👤 Thielepape Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:09
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PROCESS OF TREATING KAOLINITE CONTAINING CLAY WHICH COMPRISES MIXING THE CLAY WITH AT LEAST ONE CHEMICAL COMPOUND IN LIQUID FORM, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF (A) AMMONIUM ACETATE; (B) HYDRAZINE; (C) UREA; (D) FORMAMIDE; (E) ACETAMIDE; (F) DIMETHYLSULFOXIDE AND (G) AMMONIA, SAID LIQUID FORM BEING AT LEAST A CONCENTRATED SOLUTION OF SAID COMPOUND, WHEREBY SAID CHEMICAL COMPOUND IS INTRODUCED BETWEEN THE INDIVIDUAL LAYERS OF THE CLAY, THE WEIGHT RATIO OF THE CLAY TO SAID COMPOUND BEING BETWEEN ABOUT 100 TO 4 TO 100 TO 20, AND SUBJECTING THE CLAY TO A MECHANICAL TREATMENT WHICH EXERTS A SHEARING FORCE IN A DIRECTION SUBSTANTIALLY PARALLEL TO THE CLAY LAYERS, WHEREBY SAID LAYERS PERFORM A SLIDING ACTION RELATIVE TO EACH OTHER, AN INTERCALATION PRODUCT BETWEEN SAID CLAY AND SAID CHEMICAL COMPOUND IS OBTAINED IN WHICH THE DISTANCE BETWEEN THE CLAY LAYERS IS ENLARGED AND THE LATTICE STRUCTURE OF THE CLAY IS DISTENDED.
Claim 2
Dependent Claim
154 words
A PROCESS OF TREATING KAOLINITE CONTAINING CLAY WHICH COMPRISES MIXING THE CLAY WITH AT LEAST ONE CHEMICAL COMPOUND IN LIQUID FORM, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF (A) AMMONIUM ACETATE; (B) HYDRAZINE; (C) UREA; (D) FORMAMIDE; (E) ACETAMIDE; (F) DIMETHYLSULFOXIDE AND (G) AMMONIA, SAID LIQUID FORM BEING AT LEAST A CONCENTRATED SOLUTION OF SAID COMPOUND, WHEREBY SAID CHEMICAL COMPOUND IS INTRODUCED BETWEEN THE INDIVIDUAL LAYERS OF THE CLAY, THE WEIGHT RATIO OF THE CLAY TO SAID COMPOUND BEING BETWEEN ABOUT 100 TO 4 TO 100 TO 20, AND SUBJECTING THE CLAY TO A MECHANICAL TREATMENT WHICH EXERTS A SHEARING FORCE IN A DIRECTION SUBSTANTIALLY PARALLEL TO THE CLAY LAYERS, WHEREBY SAID LAYERS PERFORM A SLIDING ACTION RELATIVE TO EACH OTHER, AN INTERCALATION PRODUCT BETWEEN SAID CLAY AND SAID CHEMICAL COMPOUND IS OBTAINED IN WHICH THE DISTANCE BETWEEN THE CLAY LAYERS IS ENLARGED AND THE LATTICE STRUCTURE OF THE CLAY IS DISTENDED.
References Cited (Backward Citations)
US2535647A
Cited
US2838410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |