US3175997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing polymers containing hydroxy end groups
Assignee: Phillips Petroleum Co
•
Filing: 1959-10-23
•
Granted: 1965-03-30
•
Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Henry L Hsieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:27
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR THE PREPARATION OF POLYMER HAVING HYDROXY END GROUUPS WHICH COMPRISES REACTING IN A HYDROCARBON MEDIA A TERMINALLY REACTIVE POLYMER OF MONOMERS SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES CONTAINING FROM 4 TO 12 CARBON ATOMS PER MOLECULE, ARYLSUBSTITUTED OLEFINS, HETEROCYCLIC NITROGEN-CONTAINING MONOMERS, ACRYLIC ACID ESTERS, ALKACRYLIC ACID ESTERS, VINYLFURAN AND CINYLCARBAZOLE, SAID POLYMER HAVIN 1 TO 4 TERMINAL ALKALI METAL ATOMS, WITH A EPOXY COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
72 words
A PROCESS FOR THE PREPARATION OF POLYMER HAVING HYDROXY END GROUUPS WHICH COMPRISES REACTING IN A HYDROCARBON MEDIA A TERMINALLY REACTIVE POLYMER OF MONOMERS SELECTED FROM THE GROUP CONSISTING OF CONJUGATED DIENES CONTAINING FROM 4 TO 12 CARBON ATOMS PER MOLECULE, ARYLSUBSTITUTED OLEFINS, HETEROCYCLIC NITROGEN-CONTAINING MONOMERS, ACRYLIC ACID ESTERS, ALKACRYLIC ACID ESTERS, VINYLFURAN AND CINYLCARBAZOLE, SAID POLYMER HAVIN 1 TO 4 TERMINAL ALKALI METAL ATOMS, WITH A EPOXY COMPOUND HAVING THE FORMULA
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |