US3330883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymerization of low carbon number and high carbon number olefin fractions
Assignee: Gulf Research and Development Co
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Filing: 1964-04-06
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Granted: 1967-07-11
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Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Giannetti
- 👤 Alfred M Henke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:26
CPC Classifications
C; C10; C10G; C10G50/00; C10G50/02; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD OF PREPARING A LUBRICATING OIL COMPOSITION HAVING A MOLECULAR WEIGHT BETWEEN 500 AND 1500; A VISCOSITY AT 210*F. BETWEEN 58 AND ABOUT 110 SUS; A VISCOSITY INDEX GREATER THAN ABOUT 120 AND A POUR POINT NO HIGHER THAN PLUS 10*F. WHICH COMPRISES COPOLYMERIZING A MIXTURE OF AT LEAST ONE LOW CARBON NUMBER ALPHA OLEFIN HAVING BETWEEN 6 AND 10 CARBON ATOMS PER MOLECULE AND AT LEAST ONE HIGH CARBON NUMBER ALPHA OLEFIN HAVING BETWEEN 14 AND 16 CARBON ATOMS PER MOLECULE IN CONTACT WITH AT LEAST ONE PERCENT BY WEIGHT OF SAID OLEFIN MIXTURE OF A FRIEDEL-CRAFTS CATALYST AT A TEMPERATURE BETWEEN 100* AND 250*F. AND A PRESSURE SUFFICIENT TO MAINTAIN THE REACTANTS IN THE LIQUID PHASE; SAID LOW AND HIGH CARBON NUMBER ALPHA OLEFINS BEING PRESENT IN SAID MIXTURE IN SUCH MOLAR PROPORTIONS THAT THE MEAN VALUE OF THE CARBON ATOMS PER MOLECULE IN THE MIXTURE IS BETWEEN 9 AND 14.
Claim 2
Independent Claim
154 words
A METHOD OF PREPARING A LUBRICATING OIL COMPOSITION HAVING A MOLECULAR WEIGHT BETWEEN 500 AND 1500; A VISCOSITY AT 210*F. BETWEEN 58 AND ABOUT 110 SUS; A VISCOSITY INDEX GREATER THAN ABOUT 120 AND A POUR POINT NO HIGHER THAN PLUS 10*F. WHICH COMPRISES COPOLYMERIZING A MIXTURE OF AT LEAST ONE LOW CARBON NUMBER ALPHA OLEFIN HAVING BETWEEN 6 AND 10 CARBON ATOMS PER MOLECULE AND AT LEAST ONE HIGH CARBON NUMBER ALPHA OLEFIN HAVING BETWEEN 14 AND 16 CARBON ATOMS PER MOLECULE IN CONTACT WITH AT LEAST ONE PERCENT BY WEIGHT OF SAID OLEFIN MIXTURE OF A FRIEDEL-CRAFTS CATALYST AT A TEMPERATURE BETWEEN 100* AND 250*F. AND A PRESSURE SUFFICIENT TO MAINTAIN THE REACTANTS IN THE LIQUID PHASE; SAID LOW AND HIGH CARBON NUMBER ALPHA OLEFINS BEING PRESENT IN SAID MIXTURE IN SUCH MOLAR PROPORTIONS THAT THE MEAN VALUE OF THE CARBON ATOMS PER MOLECULE IN THE MIXTURE IS BETWEEN 9 AND 14.
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |