US3074919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization control
Assignee: Phillips Petroleum Co
•
Filing: 1956-07-30
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Granted: 1963-01-22
•
Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Mellow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:31
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02; C08F110/00; C08F110/02; C08F2400/00; C08F2400/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A METHOD OF CONTROL FOR A POLYMERIZATION PROCESS WHEREIN MONOMERS ARE POLYMERIZED IN THE PRESENCE OF A SOLVENT AND A SOLID CATALYST AND WHEREIN THE POLYMERIZATION COMPONENTS ARE ADDED CONTINOUSLY TO AND WITHDRAWN CONTINOUSLY FROM THE REACTION ZONE AND WHEREIN REACTION HEAT IS REMOVED IN A COOLANT IN INDIRECT HEAT EXCHANGE WITH POLYMERIZATION ADMIXTURE, SAID METHOD COMPRISING CONTROLLING THE REACTION TEMPERATURE BY VARYING THE COOLANT TEMPERATURE RESPONSIVE TO CHANGES IN REACTION TEMPERATURE TO HOLD SAID REACTION TEMPERATURE SUBSTANTIALLY CONSTAN AND REGULATING THE RATE OF CATALYST ADDITION RESPONSIVE TO COOLANT TEMPERATURE SO AS TO MAINTAIN THE REACTION RATE SUBSTANTIALLY CONSTANT.
Claim 2
Independent Claim
99 words
A METHOD OF CONTROL FOR A POLYMERIZATION PROCESS WHEREIN MONOMERS ARE POLYMERIZED IN THE PRESENCE OF A SOLVENT AND A SOLID CATALYST AND WHEREIN THE POLYMERIZATION COMPONENTS ARE ADDED CONTINOUSLY TO AND WITHDRAWN CONTINOUSLY FROM THE REACTION ZONE AND WHEREIN REACTION HEAT IS REMOVED IN A COOLANT IN INDIRECT HEAT EXCHANGE WITH POLYMERIZATION ADMIXTURE, SAID METHOD COMPRISING CONTROLLING THE REACTION TEMPERATURE BY VARYING THE COOLANT TEMPERATURE RESPONSIVE TO CHANGES IN REACTION TEMPERATURE TO HOLD SAID REACTION TEMPERATURE SUBSTANTIALLY CONSTAN AND REGULATING THE RATE OF CATALYST ADDITION RESPONSIVE TO COOLANT TEMPERATURE SO AS TO MAINTAIN THE REACTION RATE SUBSTANTIALLY CONSTANT.
Claim 3
Dependent Claim
15 words
A CONTROL APPARATUS FOR CONTROLLING THE POLYMERIZATION CONDITIONS IN A REACTION VESSEL, SAID VESSEL COMPRISING
Claim 4
Dependent Claim
15 words
A CONTROL APPARATUS FOR CONTROLLING THE POLYMERIZATION CONDITIONS IN A REACTION VESSEL, SAID VESSEL COMPRISING
References Cited (Backward Citations)
US1624294A
Cited
US2440822A
Cited
US2402137A
Cited
US2570056A
Cited
US2518307A
Cited
US2590436A
Cited
US2497323A
Cited
US2665197A
Cited
US2692257A
Cited
US2683141A
Cited
US2728753A
Cited
US2752291A
Cited
US2897183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |