US3068306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing an oily polymer from a mixture of propylene and ethylene
Assignee: Gulf Research and Development Co
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Filing: 1960-06-24
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Granted: 1962-12-11
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Expires: 1980-06-24
Abstract
No abstract record available.
Inventors
- 👤 Russell G Hay
- 👤 Leo F Meyer
- 👤 Charles M Selwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:33
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/26; C07C2/30; C08; C08F; C08F210/00; C08F210/04; C08F210/06; C07C2527/00; C07C2527/06; C07C2527/135; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/26; C07C2531/38; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR PREPARING A LOW MOLECULAR WEIGHT PILY POLYMER SUITABLE FOR USE AS A MOTOR LUBRICANT WHICH COMPRISES POLYMERIZING A MIXTURE COMPRISING PROPYLENE AND ETHYLENE, WHEREIN THE AMOUNT OF ETHYLENE RELATIVE TO THE PROPYLENE IS ABOUT THREE TO ABOUT 15 MOLAR PERCENT THEREOF IN AN INERT SATURATED HYDROCARBON SOLVENT IN THE PRESENCE OF A CATALYST SYSTEM CONTAINING TITANIUM TETRACHLORIDE AND AN ALKYL ALUMINUM CHLORIDE WHEREIN THE MOLAR RATIO OF TITANIUM TO ALUMINUM IS ABOUT 3:2 TO ABOUT 4:1
Claim 2
Dependent Claim
79 words
A PROCESS FOR PREPARING A LOW MOLECULAR WEIGHT PILY POLYMER SUITABLE FOR USE AS A MOTOR LUBRICANT WHICH COMPRISES POLYMERIZING A MIXTURE COMPRISING PROPYLENE AND ETHYLENE, WHEREIN THE AMOUNT OF ETHYLENE RELATIVE TO THE PROPYLENE IS ABOUT THREE TO ABOUT 15 MOLAR PERCENT THEREOF IN AN INERT SATURATED HYDROCARBON SOLVENT IN THE PRESENCE OF A CATALYST SYSTEM CONTAINING TITANIUM TETRACHLORIDE AND AN ALKYL ALUMINUM CHLORIDE WHEREIN THE MOLAR RATIO OF TITANIUM TO ALUMINUM IS ABOUT 3:2 TO ABOUT 4:1
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |