US2534698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins in fluorinated diluent
Assignee: Standard Oil Development Co
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Filing: 1944-11-29
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Granted: 1950-12-19
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Expires: 1964-11-29
Abstract
No abstract record available.
Inventors
- 👤 John D Calfee
- 👤 Robert M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:05
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/04; C08F210/08; C08F210/10; C08F210/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A POLYMERIZATION PROCESS COMPRISING THE STEPS IN COMBINATION OF DISPERSING A MIXTURE OF ISOBUTYLENE AND A POLYOLEFIN HAVING 4 TO 14 CARBON ATOMS PER MOLECULE, INTO A BODY OF A FLUORINE SUBSTITUTED ALIPHATIC HYDROCARBON CONTAINING MATERIAL WITHOUT SUBSTANTIAL SOLUTION THEREIN, IN THE PROPORTION OF FROM ONE-HALF PART TO 10 PARTS OF FLUORINE SUBSTITUTED ALIPHATIC HYDROCARBON PER PART OF OLEFLNIC MONOMER; AND THE FLUORINE SUBSTITUTED ALIPHATIC HYDROCARBON HAVING FROM ONE TO FIVE CARBON ATOMS PER MOLECULE WHICH IS LIQUID AT THE POLYMERIZATION TEMPERATURE AND POLYMERIZING THE DISPERSED MIXTURE OF ISOBUTYLEN AND POLYOLEFIN HAVING FOUR TO FOURTEEN CARBON ATOMS PER MOLECULE AT TEMPERATURES BETWEEN -20*C. AND -164*C. BY THE APPLICATION THERETO OF A FRIEDEL-CRAFTS CATALYST.
Claim 2
Dependent Claim
113 words
A POLYMERIZATION PROCESS COMPRISING THE STEPS IN COMBINATION OF DISPERSING A MIXTURE OF ISOBUTYLENE AND A POLYOLEFIN HAVING 4 TO 14 CARBON ATOMS PER MOLECULE, INTO A BODY OF A FLUORINE SUBSTITUTED ALIPHATIC HYDROCARBON CONTAINING MATERIAL WITHOUT SUBSTANTIAL SOLUTION THEREIN, IN THE PROPORTION OF FROM ONE-HALF PART TO 10 PARTS OF FLUORINE SUBSTITUTED ALIPHATIC HYDROCARBON PER PART OF OLEFLNIC MONOMER; AND THE FLUORINE SUBSTITUTED ALIPHATIC HYDROCARBON HAVING FROM ONE TO FIVE CARBON ATOMS PER MOLECULE WHICH IS LIQUID AT THE POLYMERIZATION TEMPERATURE AND POLYMERIZING THE DISPERSED MIXTURE OF ISOBUTYLEN AND POLYOLEFIN HAVING FOUR TO FOURTEEN CARBON ATOMS PER MOLECULE AT TEMPERATURES BETWEEN -20*C. AND -164*C. BY THE APPLICATION THERETO OF A FRIEDEL-CRAFTS CATALYST.
References Cited (Backward Citations)
US2172403A
Cited
US2243470A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |