US2670392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins
Assignee: Texaco Inc
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Filing: 1950-04-19
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Granted: 1954-02-23
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Expires: 1970-04-19
Abstract
No abstract record available.
Inventors
- 👤 William F Glassmire
- 👤 James H Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:47
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/16; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF PRODUCING HIGHER BOILING OLEFIN POLYMERS FROM A CHARGE OF OLEFIN POLYMERS BOILING ESSENTIALLY WITHIN THE GASOLINE BOILING RANGE THAT COMPRISES CONTACTING THE OLEFIN POLYMERS WITH STONG SULFURIC ACID AT A LOW TEMPERATURE NOT EXCEEDING ABOUT 70* F. IN THE PRESENCE OF A PROPORTION OF ISOPARAFFIN LOWER BOLING THAN THE CHARGE IN A RATIO OF ISOPARAFFIN TO OLEFIN OF THE ORDER OF 0.2-0.5:1 AND WITH AN OLEFIN SPACE VELOCITY OF ABOUT 0.2-1.0 LIQUID VOLUME PER VOLUME ACID PER HOUR TO THEREBY EFFECT REACTIONS INVOLVING ESSENTIALLY POLYMERIZATION TO FORM NIGHER BOILING OLEFIN POLYMERS.
Claim 2
Independent Claim
94 words
THE METHOD OF PRODUCING HIGHER BOILING OLEFIN POLYMERS FROM A CHARGE OF OLEFIN POLYMERS BOILING ESSENTIALLY WITHIN THE GASOLINE BOILING RANGE THAT COMPRISES CONTACTING THE OLEFIN POLYMERS WITH STONG SULFURIC ACID AT A LOW TEMPERATURE NOT EXCEEDING ABOUT 70* F. IN THE PRESENCE OF A PROPORTION OF ISOPARAFFIN LOWER BOLING THAN THE CHARGE IN A RATIO OF ISOPARAFFIN TO OLEFIN OF THE ORDER OF 0.2-0.5:1 AND WITH AN OLEFIN SPACE VELOCITY OF ABOUT 0.2-1.0 LIQUID VOLUME PER VOLUME ACID PER HOUR TO THEREBY EFFECT REACTIONS INVOLVING ESSENTIALLY POLYMERIZATION TO FORM NIGHER BOILING OLEFIN POLYMERS.
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) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |