US2871204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing granular compositions of acrylate salt, sand, and clay and product resulting therefrom
Assignee: Rohm and Haas Co
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Filing: 1954-08-17
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Granted: 1959-01-27
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Expires: 1974-08-17
Abstract
No abstract record available.
Inventors
- 👤 Robert P Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:58
CPC Classifications
C; C08; C08F; C08F120/00; C08F120/02; C08F120/04; C08F120/06; B; B01; B01J; B01J47/00; B01J47/018
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
147 words
A METHOD OF PRODUCING A GRANULAR COMPOSITION COMPRISING PREPARING AN AQUEOUS SOLUTION DISSOLVED THERIN, AT A CONCENTRATION OF 5% UP TO SATURATION, 3 TO 30 PARTS BY WEIGHT OF A SALT OF ACRYLIC ACID WITH A DIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, MAGNESIUM, STRONTIUM, ZINC, AND BARIUM, INTRODUCING 1/2 TO 10%, BASED ON THE WEIGHT OF SALT, OF A POLYMERIZATION CATALYST TO POLYMERIZE THE SALT, MIXTURE THEREIN 97 TO 70 PARTS BY WEIGHT OF PARTICLES OF A MIXTURE CONSISTING OF SAND AND CLAY IN A RANGE OF WEIGH RATIOS FROM ABOUT 1:3 TO 10:1 TO FORM A SLURRY, COMPLETING THE POLYMERIZATION OF THE ACRYLATE IN THE SLURRY AT A TEMPERATURE BETWEEN ABOUT -12*C. AND 110*C. UNTIL A COALESCED MASS IS OBTAINED, AND SUBSEQUENTLY SUB-DIVIDING THE POLYMERIC MASS CONTAINING THE INORGANIC PARTICLES INTO GRANULES OF ABOUT 0.1 TO ABOUT 5 MM. AVERAGE DIAMETER IN SIZE.
Claim 2
Independent Claim
147 words
A METHOD OF PRODUCING A GRANULAR COMPOSITION COMPRISING PREPARING AN AQUEOUS SOLUTION DISSOLVED THERIN, AT A CONCENTRATION OF 5% UP TO SATURATION, 3 TO 30 PARTS BY WEIGHT OF A SALT OF ACRYLIC ACID WITH A DIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, MAGNESIUM, STRONTIUM, ZINC, AND BARIUM, INTRODUCING 1/2 TO 10%, BASED ON THE WEIGHT OF SALT, OF A POLYMERIZATION CATALYST TO POLYMERIZE THE SALT, MIXTURE THEREIN 97 TO 70 PARTS BY WEIGHT OF PARTICLES OF A MIXTURE CONSISTING OF SAND AND CLAY IN A RANGE OF WEIGH RATIOS FROM ABOUT 1:3 TO 10:1 TO FORM A SLURRY, COMPLETING THE POLYMERIZATION OF THE ACRYLATE IN THE SLURRY AT A TEMPERATURE BETWEEN ABOUT -12*C. AND 110*C. UNTIL A COALESCED MASS IS OBTAINED, AND SUBSEQUENTLY SUB-DIVIDING THE POLYMERIC MASS CONTAINING THE INORGANIC PARTICLES INTO GRANULES OF ABOUT 0.1 TO ABOUT 5 MM. AVERAGE DIAMETER IN SIZE.
Claim 3
Dependent Claim
66 words
A GRANULAR ION-EXCHANGE RESIN COMPOSIATION, THE GRANULES OF WHICH ARE OF SIZE OF ABOUT 0.1 TO 5 MM. AVERAGE DIAMETER AND ARE FORMED OF A PLURALITY OF INORGANIC PARTICLES BOUND TOGETHER WITH A POLYMER OF A SALT OF ARYLIC ACID WITH A DIVALENT METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM, MAGNESIUM, STRONTIUM, ZINC, AND BARIUM, SAID COMPOSITION BEING OBTAINED BY THE PROCESS OF CLAIM 1.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |