Patent US3251901A successfully refreshed from Google Patents.
US3251901A
Expired / Lapsed
US
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Preparation of normally liquid higher molecular weight olefins
Assignee: Chevron USA Inc
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Filing: 1961-06-29
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Granted: 1966-05-17
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Expires: 1981-06-29
Abstract
No abstract record available.
Inventors
- 👤 Bacskai Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:44
CPC Classifications
C; C08; C08F; C08F110/00; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C08F10/00; C07C2531/00; C07C2531/02; C07C2531/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A PROCESS FOR THE PRODUCTION OF NORMALLY LIQUID OLEFIN POLYMERS HAVING A DEGREE OF POLYMERIZATION IN THE RANGE FROM ABOUT 5 TO 1000, WHICH COMPRISES CONTACTING A MIXTURE OF A POLYMERIZABLE A-OLEFIN HAVING THE FORMULA: R-CH=CH2 IN WHICH THE SEVERAL R''S ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, PHENYL, CYCLOALKYL, METHYL, ETHYL, PROPYL, AND BUTYL, AND IN WHICH X IS A HALIDE HAVING AN ATOMIC NUMBER BELOW 36, THE RATIO OF OLEFIN TO ALLYL HALIDE IN WHICH R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYLS HAVING LESS THAN 21 CARBON ATOMS, AND AN ALLYL HALIDE CONTAINING 3 TO 13 CARBON ATOMS OF THE GENERAL FORMULA: X-C(-R'')2-C(-R'')=C(-R'')2 IN THE MIXTURE BEING IN THE RANGE 10:1 TO 10,000:1, WITH A CATALYST FORMED BY THE INTERACTION OF TITANIUM TETRACHLORIDE WITH A TRI-LOWER ALKYL ALUMINUM AT A TEMPERATURE IN THE RANGE -50* TO 150*C. AND AT A PRESSURE IN THE RANGE 1 TO 100 ATMOSPHERES.
Claim 2
Dependent Claim
157 words
A PROCESS FOR THE PRODUCTION OF NORMALLY LIQUID OLEFIN POLYMERS HAVING A DEGREE OF POLYMERIZATION IN THE RANGE FROM ABOUT 5 TO 1000, WHICH COMPRISES CONTACTING A MIXTURE OF A POLYMERIZABLE A-OLEFIN HAVING THE FORMULA: R-CH=CH2 IN WHICH THE SEVERAL R''S ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, PHENYL, CYCLOALKYL, METHYL, ETHYL, PROPYL, AND BUTYL, AND IN WHICH X IS A HALIDE HAVING AN ATOMIC NUMBER BELOW 36, THE RATIO OF OLEFIN TO ALLYL HALIDE IN WHICH R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND ALKYLS HAVING LESS THAN 21 CARBON ATOMS, AND AN ALLYL HALIDE CONTAINING 3 TO 13 CARBON ATOMS OF THE GENERAL FORMULA: X-C(-R'')2-C(-R'')=C(-R'')2 IN THE MIXTURE BEING IN THE RANGE 10:1 TO 10,000:1, WITH A CATALYST FORMED BY THE INTERACTION OF TITANIUM TETRACHLORIDE WITH A TRI-LOWER ALKYL ALUMINUM AT A TEMPERATURE IN THE RANGE -50* TO 150*C. AND AT A PRESSURE IN THE RANGE 1 TO 100 ATMOSPHERES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |