Patent US2838478A successfully refreshed from Google Patents.
US2838478A
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Hydroxylated liquid diene copolymers and esters thereof
Assignee: Phillips Petroleum Co
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Filing: 1954-10-25
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Granted: 1958-06-10
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Expires: 1974-10-25
Abstract
No abstract record available.
Inventors
- 👤 John C Hillyer
- 👤 Lee O Edmonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/38; C08C19/04; C08L; C08L21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PROCESS FOR THE PRODUCTION OF HYDROXYLATED POLYMERIC MATERIAL WHICH COMPRISES REACTING A LIQUID COPOLYMER OF A COMJUGATED DIENE CONTAINING FROM 4 TO 8 CARBON ATOMS AND A COMPOUND COPOLYMERIZABLE THEREWITH CONTAINING AN ACTIVE CH2=C< GROUP WITH AQUEOUS HYDROGEN PERIOXIDE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF FORMIC ACID, METHYL FORMATE, ETHYL FORMATE AND PROPYL FORMATE, AT A TEMPERATURE IN THE RANGE OF 10*C. TO 95*C. FOR A TIME IN THE RANGE OF 1 TO 60 HOURS, THE NUMBER OF MOLS OF HYDROGEN PERIOXIDE PER THERORETICAL ALIPHATIC DOUBLE BOND PRESENT IN SAID LIQUID COPOLYMER BEING IN THE RANGE OF 0.1 TO 10, THE MOL RATIO OF SAID CATALYST TO SAID HYDROGEN PERIOXIDE BEING IN THE RANGE OF 0.2 TO 1 TO 2 TO 1, AND THE CONCENTRATION OF SAID AQUEOUS HYDROGEN POERIOXIDE BEING IN THE RANGE OF 3 TO 90 WEIGHT PERCENT.
Claim 2
Dependent Claim
147 words
A PROCESS FOR THE PRODUCTION OF HYDROXYLATED POLYMERIC MATERIAL WHICH COMPRISES REACTING A LIQUID COPOLYMER OF A COMJUGATED DIENE CONTAINING FROM 4 TO 8 CARBON ATOMS AND A COMPOUND COPOLYMERIZABLE THEREWITH CONTAINING AN ACTIVE CH2=C< GROUP WITH AQUEOUS HYDROGEN PERIOXIDE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF FORMIC ACID, METHYL FORMATE, ETHYL FORMATE AND PROPYL FORMATE, AT A TEMPERATURE IN THE RANGE OF 10*C. TO 95*C. FOR A TIME IN THE RANGE OF 1 TO 60 HOURS, THE NUMBER OF MOLS OF HYDROGEN PERIOXIDE PER THERORETICAL ALIPHATIC DOUBLE BOND PRESENT IN SAID LIQUID COPOLYMER BEING IN THE RANGE OF 0.1 TO 10, THE MOL RATIO OF SAID CATALYST TO SAID HYDROGEN PERIOXIDE BEING IN THE RANGE OF 0.2 TO 1 TO 2 TO 1, AND THE CONCENTRATION OF SAID AQUEOUS HYDROGEN POERIOXIDE BEING IN THE RANGE OF 3 TO 90 WEIGHT PERCENT.
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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |