US2899401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inlet
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
•
Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:39
CPC Classifications
C; C08; C08F; C08F10/00; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PROCESS WHICH COMPRISES POLYMERIZING A FEED CONTAINING AN ISOOLEFIN OF NOT MORE THAN ABOUT 7 CARBON ATOMS IN A POLYMERIZATION ZONE AT A TEMPERATURE LEVEL BETWEEN ABOUT -40* AND ABOUT-160*C., WITH A FRIEDEL-CRAFTS CATALYST DISSOLVED IN AN ORGANIC NON-COMPLEX FORMING SOLVENT WHICH IS LIQUID BUT A POLYMER NON-SOLVENT AT POLYMERIZATION TEMPERATURES, MIXING THE RESULTING COLD SLURRY OF POLYMER PARTICLES IN THE NON-SOLVENT WITH AN ESSENTIALLY MONOMERIC PETROLEUM HYDROCARBON PLASTICIZER OIL AND A WATER-INSOLUBLE FATTY ACID SOAP OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ZINC, ALUMINUM AND CALCIUM, SUBSEQUENTLY DISCHARGING THE RESULTING MIXTURE IN SLURRY FORM INTO AN AQUEOUS MEDIUM HEATED TO A TEMPERATURE OF 100* TO 180*F. TO DRIVE OF THE VOLATILE MATERIALS IN SAID REACTION MIXTURE AND MAINTAIN THE POLYMER IN FINELY-DIVIDED FORM AS A SLURRY IN WATER, AND RECOVERING THE POLYMER PARTICLES FROM THE WATER.
Claim 2
Dependent Claim
141 words
A PROCESS WHICH COMPRISES POLYMERIZING A FEED CONTAINING AN ISOOLEFIN OF NOT MORE THAN ABOUT 7 CARBON ATOMS IN A POLYMERIZATION ZONE AT A TEMPERATURE LEVEL BETWEEN ABOUT -40* AND ABOUT-160*C., WITH A FRIEDEL-CRAFTS CATALYST DISSOLVED IN AN ORGANIC NON-COMPLEX FORMING SOLVENT WHICH IS LIQUID BUT A POLYMER NON-SOLVENT AT POLYMERIZATION TEMPERATURES, MIXING THE RESULTING COLD SLURRY OF POLYMER PARTICLES IN THE NON-SOLVENT WITH AN ESSENTIALLY MONOMERIC PETROLEUM HYDROCARBON PLASTICIZER OIL AND A WATER-INSOLUBLE FATTY ACID SOAP OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ZINC, ALUMINUM AND CALCIUM, SUBSEQUENTLY DISCHARGING THE RESULTING MIXTURE IN SLURRY FORM INTO AN AQUEOUS MEDIUM HEATED TO A TEMPERATURE OF 100* TO 180*F. TO DRIVE OF THE VOLATILE MATERIALS IN SAID REACTION MIXTURE AND MAINTAIN THE POLYMER IN FINELY-DIVIDED FORM AS A SLURRY IN WATER, AND RECOVERING THE POLYMER PARTICLES FROM THE WATER.
References Cited (Backward Citations)
US2160996A
Cited
US2607763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |