US2750359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resins from steamcracked c5 distillate fractions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-04-13
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Granted: 1956-06-12
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Expires: 1973-04-13
Abstract
No abstract record available.
Inventors
- 👤 Glen P Hamner
- 👤 Thomas G Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:00
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR PREPARING GEL-FREE PETROLEUM RESINS WHICH COMPRISES FRACTIONATING A STEAM CRACKED UNSATURATED PETROLEUM STREAM TO SEPARATE A C5 FRACTION BOILING FROM 50* TO 120* F., SUBJECTING SAID C5 FRACTION TO THERMAL TREATMENT WHEREBY THE CYCLOPENTADIENE IS CONVERTED TO DIMERS, SEPARATING SAID DIMERS FROM THE UNDIMERIZED PORTION OF THE C5 FRACTION, BLENDING SAID UNDIMERIZED PORTION WITH FROM 5S TO 15 WT. PERCENT OF METHYLOCYCLOPENTADIENE MONOMER, SUBJECTING THE RESULTING BLEND TO POLYMERIZATION AT TEMPERATURES OF FROM 0* TO +80* F. IN THE PRESENCE OF BF3, AND ISOLATING THE GEL-FREE RESI PRODUCED THEREBY.
Claim 2
Dependent Claim
92 words
A PROCESS FOR PREPARING GEL-FREE PETROLEUM RESINS WHICH COMPRISES FRACTIONATING A STEAM CRACKED UNSATURATED PETROLEUM STREAM TO SEPARATE A C5 FRACTION BOILING FROM 50* TO 120* F., SUBJECTING SAID C5 FRACTION TO THERMAL TREATMENT WHEREBY THE CYCLOPENTADIENE IS CONVERTED TO DIMERS, SEPARATING SAID DIMERS FROM THE UNDIMERIZED PORTION OF THE C5 FRACTION, BLENDING SAID UNDIMERIZED PORTION WITH FROM 5S TO 15 WT. PERCENT OF METHYLOCYCLOPENTADIENE MONOMER, SUBJECTING THE RESULTING BLEND TO POLYMERIZATION AT TEMPERATURES OF FROM 0* TO +80* F. IN THE PRESENCE OF BF3, AND ISOLATING THE GEL-FREE RESI PRODUCED THEREBY.
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) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |