US2686759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil compositions containing waxalkylated styrene-isoprene copolymers
Assignee: ExxonMobil Oil Corp
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Filing: 1952-03-27
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Granted: 1954-08-17
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Expires: 1972-03-27
Abstract
No abstract record available.
Inventors
- 👤 John J Giammaria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:40
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F8/00; C08F8/02; C10M2205/00; C10M2205/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A MINERAL LUBRICATING OIL CONTAINING A MINOR AMOUNT, SUFFICIENT TO DEPRESS THE POUR POINT OF SAID OIL, OF THE PRODUCT FORMED BY ALKYLATING A STYRENE-ISOPRENE COPOLYMER, COMPRISING APPROXIMATELY 75 WEIGHT PER CENT OF STYRENE AND THE REMAINDER ISOPRENE, WITH AN AMOUNT OF CHLORINATED PARAFFIN WAX CONTAINING FROM 10 TO 12 WEIGHT PER CENT OF CHLORINE, TO SUPPLY TO THE REACTION FROM 2 TO 4 ATOMIC PROPORTIONS OF CHLORINE PER MOL OF STYRENE IN SAID COPOLYMER IN A POLYCHLORINATED HYDROCARBON SOLVENT HAVING A BOILING POINT OF FROM ABOUT 80* C. TO ABOUT 100* C., AT THE REFLUX TEMPERATURE OF SAID SOLVENT, FOR A TIME PERIOD OF FROM 5 TO 7 HOURS AND IN THE PRESENCE OF APPROXIMATELY 3 PER CENT BY WEIGHT OF ALUMINUM CHLORIDE AS CATALYST BASED ON THE COMBINED WEIGHT OF THE CHLORINATED WAX AND COPOLYMER USED IN THE REACTION.
Claim 2
Dependent Claim
141 words
A MINERAL LUBRICATING OIL CONTAINING A MINOR AMOUNT, SUFFICIENT TO DEPRESS THE POUR POINT OF SAID OIL, OF THE PRODUCT FORMED BY ALKYLATING A STYRENE-ISOPRENE COPOLYMER, COMPRISING APPROXIMATELY 75 WEIGHT PER CENT OF STYRENE AND THE REMAINDER ISOPRENE, WITH AN AMOUNT OF CHLORINATED PARAFFIN WAX CONTAINING FROM 10 TO 12 WEIGHT PER CENT OF CHLORINE, TO SUPPLY TO THE REACTION FROM 2 TO 4 ATOMIC PROPORTIONS OF CHLORINE PER MOL OF STYRENE IN SAID COPOLYMER IN A POLYCHLORINATED HYDROCARBON SOLVENT HAVING A BOILING POINT OF FROM ABOUT 80* C. TO ABOUT 100* C., AT THE REFLUX TEMPERATURE OF SAID SOLVENT, FOR A TIME PERIOD OF FROM 5 TO 7 HOURS AND IN THE PRESENCE OF APPROXIMATELY 3 PER CENT BY WEIGHT OF ALUMINUM CHLORIDE AS CATALYST BASED ON THE COMBINED WEIGHT OF THE CHLORINATED WAX AND COPOLYMER USED IN THE REACTION.
References Cited (Backward Citations)
GB640566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |