US2721879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aldehydes as polymerization modifiers in the production of liquid polymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1951-08-18
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Granted: 1955-10-25
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Expires: 1971-08-18
Abstract
No abstract record available.
Inventors
- 👤 Alexander H Popkin
- 👤 James M Phelan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:30
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F222/00; C08F222/10; C08F222/12; C08F222/14; C08F222/145; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/086; C10M2213/00; C10M2213/04; C10M2213/06; C10M2217/00; C10M2217/02; C10M2217/026; C10N; C10N2040/00; C10N2040/08; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN A PROCESS FOR THE PREPARATION OF LUBRICATING OIL ADDITIVE MATERIALS WHICH COMPRISES COPOLYMERIZING (1) A SUBSTANTIALLY NEUTRAL ESTER OF (A) SUBSTANTIALLY SATURATED PRIMARY ALIPHATIC ALCOHOL CONTAINING IN THE RANGE OF 1 TO 18 CARBON ATOMS AND AVERAGING ABOUT 7.5 OR MORE CARBON ATOMS PER MOLECULE AND OF (B) A MATERIAL OF THE CLASS CONSISTING OF ALPHA, BETA UNSATURATED POLYCARBOXYLIC ACIDS AND THEIR ANHYDRIDES WITH A LOW MOLECULAR WEIGHT VINYL ESTER IN THE PRESENCE OF A PEROXIDE CATALYST, THE IMPROVEMENT WHICH COMPRISES THE USE OF ABOUT 0.1 TO 10% BY WEIGHT OF AN ALIPHATIC ALDEHYDE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
99 words
IN A PROCESS FOR THE PREPARATION OF LUBRICATING OIL ADDITIVE MATERIALS WHICH COMPRISES COPOLYMERIZING (1) A SUBSTANTIALLY NEUTRAL ESTER OF (A) SUBSTANTIALLY SATURATED PRIMARY ALIPHATIC ALCOHOL CONTAINING IN THE RANGE OF 1 TO 18 CARBON ATOMS AND AVERAGING ABOUT 7.5 OR MORE CARBON ATOMS PER MOLECULE AND OF (B) A MATERIAL OF THE CLASS CONSISTING OF ALPHA, BETA UNSATURATED POLYCARBOXYLIC ACIDS AND THEIR ANHYDRIDES WITH A LOW MOLECULAR WEIGHT VINYL ESTER IN THE PRESENCE OF A PEROXIDE CATALYST, THE IMPROVEMENT WHICH COMPRISES THE USE OF ABOUT 0.1 TO 10% BY WEIGHT OF AN ALIPHATIC ALDEHYDE HAVING THE GENERAL FORMULA
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) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |