Patent US2824860A successfully refreshed from Google Patents.
US2824860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenated resin and process therefor
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-06-29
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Granted: 1958-02-25
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Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 Aldridge Clyde Lee
- 👤 Small Augustus Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:48
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS OF PREPARING IMPROVED PETROLEUM RESINS AT A RAPID RATE WHICH COMPRISES POLYMERIZING A SUBSTANTIALLY CYCLODIENE-FREE STEAM CRACKED PETROLEUM FRACTION BOILING WITHIN THE RANGE OF ABOUT 50*F.-450*F. TO FORM A RESINOUS POLYMER, STRIPPING THE THUS FORMED RESIN TO REMOVE UNREACTED MATERIAL AND TO INCREASE THE SOFTENING POINT THEREOF, DISSOLVING SAID RESIN IN AN AROMATIC HYDROCARBON CONTAINING SOLVENT IN AN AMOUNT SUFFICIENT TO MATERIALLY INCREASE THE RATE OF HYDROGENATION AND HYDROGENATING THE ENTIRE SOLUTION AT 100-6000 P. S. I. G. AND 100-600*F. IN THE PRESENCE OF A HYDROGENATION CATALYST, THE CONDITIONS OF HYDROGENATION BEING SUFFICIENTLY SEVERE TO RESULT IN THE CONVERSION OF SAID AROMATIC HYDROCARBONS TO CYCLOPARAFFINIC HYDROCARBONS.
Claim 2
Dependent Claim
108 words
A PROCESS OF PREPARING IMPROVED PETROLEUM RESINS AT A RAPID RATE WHICH COMPRISES POLYMERIZING A SUBSTANTIALLY CYCLODIENE-FREE STEAM CRACKED PETROLEUM FRACTION BOILING WITHIN THE RANGE OF ABOUT 50*F.-450*F. TO FORM A RESINOUS POLYMER, STRIPPING THE THUS FORMED RESIN TO REMOVE UNREACTED MATERIAL AND TO INCREASE THE SOFTENING POINT THEREOF, DISSOLVING SAID RESIN IN AN AROMATIC HYDROCARBON CONTAINING SOLVENT IN AN AMOUNT SUFFICIENT TO MATERIALLY INCREASE THE RATE OF HYDROGENATION AND HYDROGENATING THE ENTIRE SOLUTION AT 100-6000 P. S. I. G. AND 100-600*F. IN THE PRESENCE OF A HYDROGENATION CATALYST, THE CONDITIONS OF HYDROGENATION BEING SUFFICIENTLY SEVERE TO RESULT IN THE CONVERSION OF SAID AROMATIC HYDROCARBONS TO CYCLOPARAFFINIC HYDROCARBONS.
References Cited (Backward Citations)
US2734046A
Cited
US2062845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |