Patent US2509389A successfully refreshed from Google Patents.
US2581094A
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Preparation of drying oils
Assignee: Standard Oil Development Co
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Filing: 1948-09-29
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Granted: 1952-01-01
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Expires: 1968-09-29
Abstract
No abstract record available.
Inventors
- 👤 Anthony H Gleason
- 👤 Staney E Jaros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:02
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/945; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A SELECTIVE POLYMERIZATION PROCESS FOR PREPARING DRYING OILS WHEREIN A CONJUGATED DIOLEFIN HAVING 4 TO 6 CARBON ATOMS PER MOLLECULE IS HEATED IN THE LIQUID PHASE IN A REACTION ZONE AT A TEMPERATURE BETWEEN 50 AND 150* C., UNDER SUPERATMOSPHERIC PRESSURE AND IN THE PRESENCE OF A HYDROCARBON SOLUBLE PEROXIDE CATALYST FOR A PERIOD SUFFICIENT TO CONVERT NOT MORE THAN 80% OF THE DIOLEFIN INTO A LINEAR OILY POLYMER AND NOT MORE THAN 5% INTO A DIOLEFIN DIMER, THE METHOD OF REDUCING THE FORMATION OF SOLID INSOLUBLE POLYMER WHICH COMPRISES CONTINUALLY FLUSHING THE ENTRIE INTERIOR SURFACES OF THE GAS SPACE ABOVE THE LIQUID LEVEL OF THE REACTION ZONE WITH AT LEAST A PORTION OF THE LIQUID PHASE.
Claim 2
Dependent Claim
118 words
IN A SELECTIVE POLYMERIZATION PROCESS FOR PREPARING DRYING OILS WHEREIN A CONJUGATED DIOLEFIN HAVING 4 TO 6 CARBON ATOMS PER MOLLECULE IS HEATED IN THE LIQUID PHASE IN A REACTION ZONE AT A TEMPERATURE BETWEEN 50 AND 150* C., UNDER SUPERATMOSPHERIC PRESSURE AND IN THE PRESENCE OF A HYDROCARBON SOLUBLE PEROXIDE CATALYST FOR A PERIOD SUFFICIENT TO CONVERT NOT MORE THAN 80% OF THE DIOLEFIN INTO A LINEAR OILY POLYMER AND NOT MORE THAN 5% INTO A DIOLEFIN DIMER, THE METHOD OF REDUCING THE FORMATION OF SOLID INSOLUBLE POLYMER WHICH COMPRISES CONTINUALLY FLUSHING THE ENTRIE INTERIOR SURFACES OF THE GAS SPACE ABOVE THE LIQUID LEVEL OF THE REACTION ZONE WITH AT LEAST A PORTION OF THE LIQUID PHASE.
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) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |