Patent US3126364A successfully refreshed from Google Patents.
US3126364A
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Process for the manufacture of pour depressant
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:43
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/146; C08; C08F; C08F10/00; C10L1/18; C10L1/192; C10L1/195; C10L1/1955; C10L1/196; C10L1/1963; C10L1/197; C10L1/1973; C10L1/22; C10L1/234; C10L1/236; C10L1/2362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IMPROVED PROCESS FOR THE MANUFACTURE OF A POUR DEPRESSANT COMPRISING A COPOLYMER OF ETHYLENE AND VINYL ACETATE WHICH COMPRISES REACTING ETHYLENE AND VINYL ACETATE IN A BENZENE SOLVENT SATURATED WITH WATER AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 280* TO 340*F., AND AT A PRESSURE IN THE RANGE OF FROM ABOUT 700 TO 2,000 POUNDS FOR A TIME PERIOD OF FROM ABOUT 2 TO 16 HOURS UNDER CONDITIONS WHEREIN THE CONCENTRATION OF THE VINYL ACETATE IN THE BENZENE SOLUTION VARIES FROMABOUT 0.2 TO 10.0% AND WHEREIN THE PRESSURE IS MAINTAINED WITHIN THE DESIRED RANGE BY THE FURTHER ADDITION OF ETHYLENE, WHEREBY A POLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE FROM
Claim 2
Dependent Claim
113 words
IMPROVED PROCESS FOR THE MANUFACTURE OF A POUR DEPRESSANT COMPRISING A COPOLYMER OF ETHYLENE AND VINYL ACETATE WHICH COMPRISES REACTING ETHYLENE AND VINYL ACETATE IN A BENZENE SOLVENT SATURATED WITH WATER AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 280* TO 340*F., AND AT A PRESSURE IN THE RANGE OF FROM ABOUT 700 TO 2,000 POUNDS FOR A TIME PERIOD OF FROM ABOUT 2 TO 16 HOURS UNDER CONDITIONS WHEREIN THE CONCENTRATION OF THE VINYL ACETATE IN THE BENZENE SOLUTION VARIES FROMABOUT 0.2 TO 10.0% AND WHEREIN THE PRESSURE IS MAINTAINED WITHIN THE DESIRED RANGE BY THE FURTHER ADDITION OF ETHYLENE, WHEREBY A POLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE FROM
References Cited (Backward Citations)
US2396785A
Cited
US2947735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |