Patent US3260728A successfully refreshed from Google Patents.
US3260728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing ethylene with lauryl methacrylate and n-vinyl-2-pyrrolidone
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1964-06-04
•
Granted: 1966-07-12
•
Expires: 1984-06-04
Abstract
No abstract record available.
Inventors
- 👤 Ilnyckyi Stephan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:38
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/236; C10L1/2368; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
PROCESS FOR THE MANUFACTURE OF AN IMPROVED POUR DEPRESSANT AND SEDIMENT IMPROVER WHICH COMPRISES INTRODUCING A BENZENE SOLVENT INTO A REACTION ZONE, MAINTAINING THE REACTION ZONE AT A TEMPERATURE OF THE RANGE FROM 200* TO 400*F., THEREAFTER PRESSURIZING THE SAME WITH ETHYLENE TO A PRESSURE IN THE RANGE FROM 500 TO 200 P.S.I.G., THEREAFTER INTRODUCING INTO SAID REACTION ZONE A MONOMER SELECTED FROM THE GROUP CONSISTING OF LAURYL METHACRYLATE AND LAURYL METHACRYLATE AND N-VINYL-2PYRROLIDONE AND A PROMOTER AND MAINTAINING SAID ZONE AT SAID PRESSURE AND TEMPERATURE CONDITIONS FOR A PERIOD OF FROM TWO TO THREE HOURS, THEREAFTER RECOVERING A POLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE OF 700 TO 3500 THEREFROM.
Claim 2
Dependent Claim
112 words
PROCESS FOR THE MANUFACTURE OF AN IMPROVED POUR DEPRESSANT AND SEDIMENT IMPROVER WHICH COMPRISES INTRODUCING A BENZENE SOLVENT INTO A REACTION ZONE, MAINTAINING THE REACTION ZONE AT A TEMPERATURE OF THE RANGE FROM 200* TO 400*F., THEREAFTER PRESSURIZING THE SAME WITH ETHYLENE TO A PRESSURE IN THE RANGE FROM 500 TO 200 P.S.I.G., THEREAFTER INTRODUCING INTO SAID REACTION ZONE A MONOMER SELECTED FROM THE GROUP CONSISTING OF LAURYL METHACRYLATE AND LAURYL METHACRYLATE AND N-VINYL-2PYRROLIDONE AND A PROMOTER AND MAINTAINING SAID ZONE AT SAID PRESSURE AND TEMPERATURE CONDITIONS FOR A PERIOD OF FROM TWO TO THREE HOURS, THEREAFTER RECOVERING A POLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE OF 700 TO 3500 THEREFROM.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |