US3114744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of isoprene to trans-1, 4-polyisoprene with a vcl3-ti (or)4-air3 catalst
Assignee: Uniroyal Inc
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Filing: 1960-10-25
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Granted: 1963-12-17
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Expires: 1980-10-25
Abstract
No abstract record available.
Inventors
- 👤 Jack S Lasky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:21
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/08; Y; Y10; Y10S; Y10S526/00; Y10S526/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A METHOD FOR MAKING TRANS-1,4-POLYISOPRENE WHICH COMPRISES POLYMERIZING ISOPRENE IN THE PRESENCE OF A CATALYST WHICH IS THE INTERACTION PRODUCT OF VANADIUM TRICHLORIDE, AN ALUMINUM TRIHYDROCARBYL AND A TETRAHYDROCARBLY TITANATE WHEREIN THE HYDROCARBLY RADICALS ARE SELECTED FROM THE SATURATED ALIPHATIC AND ALICYCLIC HYDROCARBON RADICALS HAVING FROM 1 TO 12 CARBON ATOMS AND AROMATIC HYDROCARBON RADICALS HAVING FROM 6 TO 12 CARBON ATOMS, THE MOLAR RATIO OF ALUMINUM TRIHYDROCARBYL TO VANADIUM TRICHLORIDE BEING FROM ABOUT 2:1 TO ABOUT 200:1, THE MOLAR RATIO OF ALUMINUM TRIHYDROCARBYL TO TITANATE BEING FROM ABOUT 2:1 TO ABOUT 80:1, AND THE MOLAR RATIO OF VANADIUM TRICHLORIDE TO TITANATE BEING FROM ABOUT 1:8 TO ABOUT 8:1, THE ALUMINUM TRIHYDROCARBYL AND THE TITANATE BEING ALLOWED TO REACT SUBSTANTIALLY IN THE PRESENCE OF THE VANADIUM TRICHLORIDE.
Claim 2
Independent Claim
127 words
A METHOD FOR MAKING TRANS-1,4-POLYISOPRENE WHICH COMPRISES POLYMERIZING ISOPRENE IN THE PRESENCE OF A CATALYST WHICH IS THE INTERACTION PRODUCT OF VANADIUM TRICHLORIDE, AN ALUMINUM TRIHYDROCARBYL AND A TETRAHYDROCARBLY TITANATE WHEREIN THE HYDROCARBLY RADICALS ARE SELECTED FROM THE SATURATED ALIPHATIC AND ALICYCLIC HYDROCARBON RADICALS HAVING FROM 1 TO 12 CARBON ATOMS AND AROMATIC HYDROCARBON RADICALS HAVING FROM 6 TO 12 CARBON ATOMS, THE MOLAR RATIO OF ALUMINUM TRIHYDROCARBYL TO VANADIUM TRICHLORIDE BEING FROM ABOUT 2:1 TO ABOUT 200:1, THE MOLAR RATIO OF ALUMINUM TRIHYDROCARBYL TO TITANATE BEING FROM ABOUT 2:1 TO ABOUT 80:1, AND THE MOLAR RATIO OF VANADIUM TRICHLORIDE TO TITANATE BEING FROM ABOUT 1:8 TO ABOUT 8:1, THE ALUMINUM TRIHYDROCARBYL AND THE TITANATE BEING ALLOWED TO REACT SUBSTANTIALLY IN THE PRESENCE OF THE VANADIUM TRICHLORIDE.
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) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |