US3324099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization using a catalyst comprising an alkyllithium and a benzyl mercaptan
Assignee: Phillips Petroleum Co
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Filing: 1965-03-24
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Granted: 1967-06-06
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Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 William J Trepka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:16
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A POLYMERIZATION PROCESS WHICH COMPRISES CONTACTING A VINYLIDENE-CONTAINING MONOMER UNDER POLYMERIZATION CONDITIONS IN A HYDROCARBON DILUENT WITH AN INITIATOR SPARINGLY SOLUBLE IN SAID DILUENT, SAID INITIATOR BEING A REACTION PRODUCT OF AN ALKYLITHIUM HAVING UP TO 12 CARBON ATOMS PER MOLECULE AND BENZYL MERCAPTAN DERIVATIVES OF THE FORMULA
Claim 2
Dependent Claim
79 words
A PROCESS ACCORDING TO CLAIM 7 WHEREIN SAID INITIATOR IS MODIFIED BY THE ADDITION THERETO OF AN ORGANOTIN COMPOUND OF THE FORMULA SNR''4 WHEREIN R'' IS SELECTED FROM THE GROUP CONSISTING OF ALLYLIC-TYPE RADICALS, AN UNSATURATED ORGANIC RADICAL IN WHICH THE DOUBLE BOND IS ONE CARBON ATOM REMOVED FROM THE TIN, AND HAVING 3 TO 12 CARBON ATOMS AND AROMATIC RADICALS HAVING 6 TO 12 CARBON ATOMS, AT LEAST ONE OF THE R'' RADICALS BEING OF THE ALLYLIC TYPE.
References Cited (Backward Citations)
US3085120A
Cited
US3215679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |