Patent US3281383A successfully refreshed from Google Patents.
US3281383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Branched polymers prepared from monolithium-terminated polymers and compounds having at least three reactive sites
Assignee: Phillips Petroleum Co
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Filing: 1962-08-09
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Granted: 1966-10-25
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Expires: 1982-08-09
Abstract
No abstract record available.
Inventors
- 👤 Robert P Zelinski
- 👤 Henry L Hsieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:24
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/021; C08G81/022; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08F; C08F2/00; C08F2/36; Y; Y10; Y10S; Y10S525/00; Y10S525/901
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A METHOD OF MAKING A BRANCHED POLYMER WHICH COMPRISES POLYMERIZING MONOMERS SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES AND VINYL-SUBSTITUTED AROMATIC COMPOUNDS IN THE PRESENCE OF AN ORGANOMONOLITHIUM INITIATOR AND REACTING THE RESULTING MONO-LITHIUMTERMINATED POLYMER WITH FROM 0.3 TO ABOUT 1 EQUIVALENT BASED ON THE LITHIUM IN THE POLYMER OF A COMPOUND HAVING AT LEAST THREE REACTIVE SITES CAPABLE OF REACTING WITH THE CARBON-LITHIUM BOND OF THE POLYMER, EXCLUSIVE OF RGANIC REACTANT MATERIALS HAVING HALOGEN ATOMS THAT ARE ATTACHED TO A CARBON ATOM WHICH IS ALPHA TO AN ACTIVIATING GROUP SELECTED FROM THE GROUP CONSISTING OF AN ETHER LINKAGE, A CARBONYL AND A CARBON-TO-CARBON DOUBLE BOND, THEREBY COUPLING SAID POLYMER WITH SAID COMPOUND.
Claim 2
Independent Claim
114 words
A METHOD OF MAKING A BRANCHED POLYMER WHICH COMPRISES POLYMERIZING MONOMERS SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES AND VINYL-SUBSTITUTED AROMATIC COMPOUNDS IN THE PRESENCE OF AN ORGANOMONOLITHIUM INITIATOR AND REACTING THE RESULTING MONO-LITHIUMTERMINATED POLYMER WITH FROM 0.3 TO ABOUT 1 EQUIVALENT BASED ON THE LITHIUM IN THE POLYMER OF A COMPOUND HAVING AT LEAST THREE REACTIVE SITES CAPABLE OF REACTING WITH THE CARBON-LITHIUM BOND OF THE POLYMER, EXCLUSIVE OF RGANIC REACTANT MATERIALS HAVING HALOGEN ATOMS THAT ARE ATTACHED TO A CARBON ATOM WHICH IS ALPHA TO AN ACTIVIATING GROUP SELECTED FROM THE GROUP CONSISTING OF AN ETHER LINKAGE, A CARBONYL AND A CARBON-TO-CARBON DOUBLE BOND, THEREBY COUPLING SAID POLYMER WITH SAID COMPOUND.
Claim 3
Independent Claim
96 words
A METHOD OF MAKING A BRANCHED CONJUGATED DIENE POLYMER WHICH COMPRISES POLYMERIZING A CONJUGATED DIENE HAVING 4 TO 8 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF AN ORGANO-MONOLITHIUM INTIATOR AND REACTING THE RESULTING MONO-LITHIUM-TERMINATED POLYMER WITH FROM 0.5 TO ABOUT 1 EQUIVALENT BASED ON THE LITHIUM IN THE POLYMER OF A POLYEPOXIDE COMPOUND, SAID POLYEPOXIDE COMPOUND HAVING AT LEAST 3 REACTIVE SITES CAPABLE OF REACTING WITH THE CARBON-LITHIUM BOND OF THE POLYMER AND HAVING SUFFICIENT EPOXY GROUPS TO CHARACTERIZE SAID COMPOUND SUBSTANTIALLY AS A POLYPOXIDE, SAID COMPOUND FUNCTIONING TO YEILD SAID BRAANCHED CONJUGATED DIENE POLYMER.
Claim 4
Independent Claim
96 words
A METHOD OF MAKING A BRANCHED CONJUGATED DIENE POLYMER WHICH COMPRISES POLYMERIZING A CONJUGATED DIENE HAVING 4 TO 8 CARBON ATOMS PER MOLECULE IN THE PRESENCE OF AN ORGANO-MONOLITHIUM INTIATOR AND REACTING THE RESULTING MONO-LITHIUM-TERMINATED POLYMER WITH FROM 0.5 TO ABOUT 1 EQUIVALENT BASED ON THE LITHIUM IN THE POLYMER OF A POLYEPOXIDE COMPOUND, SAID POLYEPOXIDE COMPOUND HAVING AT LEAST 3 REACTIVE SITES CAPABLE OF REACTING WITH THE CARBON-LITHIUM BOND OF THE POLYMER AND HAVING SUFFICIENT EPOXY GROUPS TO CHARACTERIZE SAID COMPOUND SUBSTANTIALLY AS A POLYPOXIDE, SAID COMPOUND FUNCTIONING TO YEILD SAID BRAANCHED CONJUGATED DIENE POLYMER.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |