US3324191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: Phillips Petroleum Co
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Filing: 1964-11-16
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Granted: 1967-06-06
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Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Clinton F Wofford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:16
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/38; C07C2/40; C07C2/403; C07C2/406; C07C2531/00; C07C2531/02; C07C2531/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS FOR PREPARING CONJUGATED DIENE POLYMERS WHICH COMPRISE CONTACTING A MONOMERIC MATERIAL SLECTED FROM THE GROUP CONSISTING OF (1) AT LEAST ONE CONJUGATED DIENE AND (2) A MIXTURE OF A CONJUGATED DIENE AND A VINYLSUBSTITUTED AROMATIC HYDROCARBON IN WHICH SAID VINYL GROUP IS ATTACHED TO A NUCLEAR CARBON ATOM, WITH A CATALYST WHICH FORMS ON MIXING MATERIALS CONSISTING ESSENTIALLY OF (A) FROM 0.25 TO 25 EQUIVALENTS (BASED ON LITHIUM ATOMS) PER EQUIVALENT OF ORGANIC COMPOUND (B) OF AN ORGANOLITHIUM COMPOUND HAVING THE FORMULA R(6I)2 WHEREIN R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC RADICALS AND X IS AN INTEGER FROM 1 TO 4, INCLUSIVE; (B) AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FOLLOWING FORMULAS:
Claim 2
Dependent Claim
127 words
A PROCESS FOR PREPARING CONJUGATED DIENE POLYMERS WHICH COMPRISE CONTACTING A MONOMERIC MATERIAL SLECTED FROM THE GROUP CONSISTING OF (1) AT LEAST ONE CONJUGATED DIENE AND (2) A MIXTURE OF A CONJUGATED DIENE AND A VINYLSUBSTITUTED AROMATIC HYDROCARBON IN WHICH SAID VINYL GROUP IS ATTACHED TO A NUCLEAR CARBON ATOM, WITH A CATALYST WHICH FORMS ON MIXING MATERIALS CONSISTING ESSENTIALLY OF (A) FROM 0.25 TO 25 EQUIVALENTS (BASED ON LITHIUM ATOMS) PER EQUIVALENT OF ORGANIC COMPOUND (B) OF AN ORGANOLITHIUM COMPOUND HAVING THE FORMULA R(6I)2 WHEREIN R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC RADICALS AND X IS AN INTEGER FROM 1 TO 4, INCLUSIVE; (B) AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FOLLOWING FORMULAS:
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) | 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 |