Patent US3269978A successfully refreshed from Google Patents.
US3269978A
Expired / Lapsed
US
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Diene polymers containing both terminal epoxy and hydroxy groups
Assignee: Phillips Petroleum Co
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Filing: 1961-05-22
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Granted: 1966-08-30
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Expires: 1981-05-22
Abstract
No abstract record available.
Inventors
- 👤 James N Short
- 👤 Robert P Zelinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:08
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/42; C08C19/44; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR PRODUCING POLYMERS HAVING BOTH TERMINAL EPOXY AND HYDROXY GROUPS WHICH COMPRISES REACTING A POLYMER OF A CONJUGATED DIENE HAVING FROM 4 TO 12 CARBON ATOMS PER MOLECUULE, SAID POLYMER CONTAINING AT LEAST ONE TERMINAL ALKALI METAL ATOM PER MOLECULE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF EPOXY ALDEHYDES, EPOXY KETONES, AND EPOXY ESTERS, AND REPLACING THE LITHIUM ATOMS IN THE RESULTING POLYMER WITH HYDROGEN ATOMS, SAID COMPOUND BEING PRESENT IN AN AMOUNT OF FROM 1 TO 40 GRAM MOLS OF CARBONYL GROUP PER GRAM ATOM ALKALI METAL IN SAID POLYMERIZATE.
Claim 2
Dependent Claim
95 words
A PROCESS FOR PRODUCING POLYMERS HAVING BOTH TERMINAL EPOXY AND HYDROXY GROUPS WHICH COMPRISES REACTING A POLYMER OF A CONJUGATED DIENE HAVING FROM 4 TO 12 CARBON ATOMS PER MOLECUULE, SAID POLYMER CONTAINING AT LEAST ONE TERMINAL ALKALI METAL ATOM PER MOLECULE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF EPOXY ALDEHYDES, EPOXY KETONES, AND EPOXY ESTERS, AND REPLACING THE LITHIUM ATOMS IN THE RESULTING POLYMER WITH HYDROGEN ATOMS, SAID COMPOUND BEING PRESENT IN AN AMOUNT OF FROM 1 TO 40 GRAM MOLS OF CARBONYL GROUP PER GRAM ATOM ALKALI METAL IN SAID POLYMERIZATE.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |