Patent US3360580A successfully refreshed from Google Patents.
US3360580A
Expired / Lapsed
US
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Low viscosity polymer
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1965-10-06
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Granted: 1967-12-26
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Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Joseph K Mertzweiller
- 👤 Horace M Tenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:15
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2531/00; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD FOR THE PREPARATION OF LOW MOLECULAR WEIGHT POLYMERS WHICH COMPRISES POLYMERIZING A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS OR COPOLYMERIZING SAID DIOLEFIN WITH A VINYL AROMATIC HYDROCARBON IN A REACTION MEDIUM CONSISTING ESSENTIALLY OF 5 TO 85 WT. PERCENT OF AN ALKLATED AROMATIC HYDROCARBON AND 95 TO 15 WT. PERCENT OF AN ETHER CHOSEN FROM THE GROUP CONSISTING OF TETRAHYDROFURAN, TETRAHYDROPYRAN, DIMETHYL ETHER, DIMETHOXY ETHANE, DIMETHOXY METHANE AND METHYLAL IN THE PRESENCE OF 0.1 TO 5 WT. PERCENT OF SODIUM OR POTASSIUM AROMATIC HYDROCARBON ADDITION COMPLEX CATLYST, BASED ON REACTION MEDIUM, A TEMPERATURE OF 15 TO 150*F. WITH A MONOMER CONCENTRATION OF 0.1 TO 10 WT. PERCENT BASED ON THE REACTION MEDIUM FOR FROM 0.2 TO 6 HOURS.
Claim 2
Independent Claim
122 words
THE METHOD FOR THE PREPARATION OF LOW MOLECULAR WEIGHT POLYMERS WHICH COMPRISES POLYMERIZING A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS OR COPOLYMERIZING SAID DIOLEFIN WITH A VINYL AROMATIC HYDROCARBON IN A REACTION MEDIUM CONSISTING ESSENTIALLY OF 5 TO 85 WT. PERCENT OF AN ALKLATED AROMATIC HYDROCARBON AND 95 TO 15 WT. PERCENT OF AN ETHER CHOSEN FROM THE GROUP CONSISTING OF TETRAHYDROFURAN, TETRAHYDROPYRAN, DIMETHYL ETHER, DIMETHOXY ETHANE, DIMETHOXY METHANE AND METHYLAL IN THE PRESENCE OF 0.1 TO 5 WT. PERCENT OF SODIUM OR POTASSIUM AROMATIC HYDROCARBON ADDITION COMPLEX CATLYST, BASED ON REACTION MEDIUM, A TEMPERATURE OF 15 TO 150*F. WITH A MONOMER CONCENTRATION OF 0.1 TO 10 WT. PERCENT BASED ON THE REACTION MEDIUM FOR FROM 0.2 TO 6 HOURS.
References Cited (Backward Citations)
US2993050A
Cited
US3324191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |