US3205082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attapulgite clay thickening agent and method for making the same
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1962-11-29
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Granted: 1965-09-07
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Expires: 1982-11-29
Abstract
No abstract record available.
Inventors
- 👤 John B Buffett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:12
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/131
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
185 words
IN A METHOD FOR GRINDING COLLOIDAL ATTAPULGITE CLAY TO PROVIDE A POWDERED MATERIAL USEFULAS A THICKENING AGENT BY A PROCESS COMPRISING FORMING A SUSPENSION OF MESH SIZE PARTICLES OF THE COLLOIDAL CLAY IN A STREAM OF AN ELASTIC FLUID THAT IS MOVING AT HIGH VELOCITY AND IS AT A TEMPERATURE BELOW WHICH SUBSTANTIAL DEHYDRATION OF SAID CLAY OCCURS, SAID MESH SIZE PARTICLES HAVING BEEN OBTAINED BY DRYING RAW ATTAPULGITE CLAY AT A PRODUCT TEMPERATURE BELOW ABOUT 250*F. AND CRUSHING THE DRIED CLAY, MOVING SAID SUSPENSION AT HIGH VELOCITY AND CAUSING A SUBSTANTIAL NUMBER OF THE CLAY PARTICLES IN SAID MOVING ELASTIC FLUID TO COLLIDE WITH EACH OTHER, THE IMPROVEMENT WHICH COMPRISES: CARRYING OUT THE GRINDING OF SAID CLAY PARTICLES BY COLLISION OF SAID CLAY PARTICLES IN SAID MOVING ELASTIC FLUID IN THE PRESENCE OF A SMALL AMOUNT OF A BASIC MAGNESIUM MATERIAL SELECTED FROM THE GROUP CONSISTING OF MG(OH)2 AND HYDRATABLE MGO, THE QUANTITY OF SAID BASIC MAGNESIUM MATERIAL BEING SUCH THAT THE NORMAL IMPAIRMENT OF THE WATER THICKENING PROPERTIES OF SAID CLAY AS A RESULT OF BEING GROUND IN SAID MANNER IS REDUCED SIGNIFICANTLY.
Claim 2
Dependent Claim
185 words
IN A METHOD FOR GRINDING COLLOIDAL ATTAPULGITE CLAY TO PROVIDE A POWDERED MATERIAL USEFULAS A THICKENING AGENT BY A PROCESS COMPRISING FORMING A SUSPENSION OF MESH SIZE PARTICLES OF THE COLLOIDAL CLAY IN A STREAM OF AN ELASTIC FLUID THAT IS MOVING AT HIGH VELOCITY AND IS AT A TEMPERATURE BELOW WHICH SUBSTANTIAL DEHYDRATION OF SAID CLAY OCCURS, SAID MESH SIZE PARTICLES HAVING BEEN OBTAINED BY DRYING RAW ATTAPULGITE CLAY AT A PRODUCT TEMPERATURE BELOW ABOUT 250*F. AND CRUSHING THE DRIED CLAY, MOVING SAID SUSPENSION AT HIGH VELOCITY AND CAUSING A SUBSTANTIAL NUMBER OF THE CLAY PARTICLES IN SAID MOVING ELASTIC FLUID TO COLLIDE WITH EACH OTHER, THE IMPROVEMENT WHICH COMPRISES: CARRYING OUT THE GRINDING OF SAID CLAY PARTICLES BY COLLISION OF SAID CLAY PARTICLES IN SAID MOVING ELASTIC FLUID IN THE PRESENCE OF A SMALL AMOUNT OF A BASIC MAGNESIUM MATERIAL SELECTED FROM THE GROUP CONSISTING OF MG(OH)2 AND HYDRATABLE MGO, THE QUANTITY OF SAID BASIC MAGNESIUM MATERIAL BEING SUCH THAT THE NORMAL IMPAIRMENT OF THE WATER THICKENING PROPERTIES OF SAID CLAY AS A RESULT OF BEING GROUND IN SAID MANNER IS REDUCED SIGNIFICANTLY.
Claim 3
Dependent Claim
105 words
MINUS 44 MICRON PARTICLES OF A MIXTRUE OF COLLOIDAL ATTAPULGITE CLAY AND FROM 1/2% TO 5%, BASED UPON THE WEIGHT OF SAID CLAY, ON A 25% VOLATILE MATTER CLAY BASIS, OF A MAGNESIUM MATERIAL SELECTED FROM THE GROUP CONSISTING OF MGO AND MG(OH)2, SAID MINUS 44 MICRON PARTICLES HAVING BEEN OBTAINED BY FORMING A SUSPENSION OF MESH SIZE PARTICLES OF A MIXTURE OF COLLOIDAL CLAY AND SAID MAGNESIUM MATERIAL IN A STREAM OF UNHEATED AIR MOVING AT HIGH VELOCITY AND DIRECTING JETS OF UNHEATED COMPRESSED AIR AGAINST SAID SUSPENSION OF PARTICLES IN A MANNER SUCH THAT PARTICLES IMPINGE UPON EACH OTHER AND ARE RUPTURED THEREBY.
Claim 4
Dependent Claim
105 words
MINUS 44 MICRON PARTICLES OF A MIXTRUE OF COLLOIDAL ATTAPULGITE CLAY AND FROM 1/2% TO 5%, BASED UPON THE WEIGHT OF SAID CLAY, ON A 25% VOLATILE MATTER CLAY BASIS, OF A MAGNESIUM MATERIAL SELECTED FROM THE GROUP CONSISTING OF MGO AND MG(OH)2, SAID MINUS 44 MICRON PARTICLES HAVING BEEN OBTAINED BY FORMING A SUSPENSION OF MESH SIZE PARTICLES OF A MIXTURE OF COLLOIDAL CLAY AND SAID MAGNESIUM MATERIAL IN A STREAM OF UNHEATED AIR MOVING AT HIGH VELOCITY AND DIRECTING JETS OF UNHEATED COMPRESSED AIR AGAINST SAID SUSPENSION OF PARTICLES IN A MANNER SUCH THAT PARTICLES IMPINGE UPON EACH OTHER AND ARE RUPTURED THEREBY.
References Cited (Backward Citations)
US2665259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |