US2553426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for terminating a low temperature polymerization process
Assignee: Standard Oil Development Co
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Filing: 1948-05-26
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Granted: 1951-05-15
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Expires: 1968-05-26
Abstract
No abstract record available.
Inventors
- 👤 Henry G Schutze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
221 words
A METHOD FOR TERMINATING THE REACTION BETWEEN A TERTIARY MONO-OLEFIN AND A DIOLEFIN IN A REACTION ZONE IN WHICH THE TERITARY MONO-OLEFIN AND DIOLEFIN ARE BING POLYMERIZED IN A DILUENT FOR THE REACTION AT A TEMPERATURE NO GREATER THAN -100* F. IN THE PRESENCE OF A SOLUTION OF A FRIEDEL-CRAFTS CATALYST WHICH CONSISTS OF THE STEPS OF SEPARATELY FLOWING SAID CATALYST SOLUTION AND SAID HYDROCARBONS IN SAID DILUENT TO SAID REACTION ZONE, MAINTAINING THE TEMPERATURE IN SAID REACTION ZONE IN THE RANGE BETWEEN -100* AND -175* F., TERMINATING THE FLOW OF CATALYST SOLUTION TO SAID REACTION ZONE IN WHICH SAID TERTIARY MONO-OLEFIN AND A DIOLEFIN ARE BEING POLYMERIZED IN SAID DILUENT FOR THE REACTION, CONTINUING THE FLOW OF SAID HYDROCARBONS IN SAID DILUENT FOR THE REACTION TO SAID REACTIN ZONE ADDING TO THE CHILLED HYDROCARBONS AND DILUENT IN THE REACTION ZONE AN AMOUNT OF A SATURATED ALIPHATIC ALCOHOL PER MOL OF FRIEDEL-CRAFTS CATAATOMS IN THE MOLECULE IN THE RATIO OF AT LEAST 2 MOLS OF ALCOHOL PER MOL OF FRIEDEL-CRAFT CATALYST IN SAID REACTION ZONE, AND RECOVERING THE CONTENTS OF THE REACTIONS ZONE BY CONTINUING TO SUPPLY HYDROCARBONS AND DILUENT THERETO AT A TEMPERATURE IN THE RANGE BETWEEN -100* AND -175* F. FOR A SUBSTANTIAL LENGTH OF TIME SUFFICIENT TO DISPLACE AT LEAST 1/4 OF THE CONTENTS OF THE REACTION ZONE.
Claim 2
Independent Claim
221 words
A METHOD FOR TERMINATING THE REACTION BETWEEN A TERTIARY MONO-OLEFIN AND A DIOLEFIN IN A REACTION ZONE IN WHICH THE TERITARY MONO-OLEFIN AND DIOLEFIN ARE BING POLYMERIZED IN A DILUENT FOR THE REACTION AT A TEMPERATURE NO GREATER THAN -100* F. IN THE PRESENCE OF A SOLUTION OF A FRIEDEL-CRAFTS CATALYST WHICH CONSISTS OF THE STEPS OF SEPARATELY FLOWING SAID CATALYST SOLUTION AND SAID HYDROCARBONS IN SAID DILUENT TO SAID REACTION ZONE, MAINTAINING THE TEMPERATURE IN SAID REACTION ZONE IN THE RANGE BETWEEN -100* AND -175* F., TERMINATING THE FLOW OF CATALYST SOLUTION TO SAID REACTION ZONE IN WHICH SAID TERTIARY MONO-OLEFIN AND A DIOLEFIN ARE BEING POLYMERIZED IN SAID DILUENT FOR THE REACTION, CONTINUING THE FLOW OF SAID HYDROCARBONS IN SAID DILUENT FOR THE REACTION TO SAID REACTIN ZONE ADDING TO THE CHILLED HYDROCARBONS AND DILUENT IN THE REACTION ZONE AN AMOUNT OF A SATURATED ALIPHATIC ALCOHOL PER MOL OF FRIEDEL-CRAFTS CATAATOMS IN THE MOLECULE IN THE RATIO OF AT LEAST 2 MOLS OF ALCOHOL PER MOL OF FRIEDEL-CRAFT CATALYST IN SAID REACTION ZONE, AND RECOVERING THE CONTENTS OF THE REACTIONS ZONE BY CONTINUING TO SUPPLY HYDROCARBONS AND DILUENT THERETO AT A TEMPERATURE IN THE RANGE BETWEEN -100* AND -175* F. FOR A SUBSTANTIAL LENGTH OF TIME SUFFICIENT TO DISPLACE AT LEAST 1/4 OF THE CONTENTS OF THE REACTION ZONE.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |