Patent US2782229A successfully refreshed from Google Patents.
US2782229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of adducts of liquid linear polybutadiene and fumaric acid esters
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-04-27
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Granted: 1957-02-19
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Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Dazzi Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:59
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE PROCESS WHICH COMPRISES HEATING, AT A TEMPERATURE OF 125*C. TO 300*C., A LIQUID, LINEAR POLYMERIC BUTADIENE HYDROCARBON WITH AN ESTER SELECTED FROM THE CLASS CONSISTING OF AN ALKYL FUMARATE HAVING FROM 1 TO 8 CARBON ATOMS IN THE ALKYL RADICAL AND AN ALKOXYALKYL FUMARATE HAVING FROM 2 TO 8 CARBON ATOMS IN THE ALKOXYALKYL RADICAL AND TETRAHYDROFURFURYL FUMARATE, AND RECOVERING FROM THE RESULTING REACTION PRODUCT A VISCOUS ADDUCT IN WHICH FROM 1 TO 3 MOLES OF SAID ESTER ARE COMBINED AT EACH OF AT LEAST 5 PERCENT F THE OLEFINIC UNITS OF SAID POLYMERIC HYDROCARBON.
Claim 2
Dependent Claim
96 words
THE PROCESS WHICH COMPRISES HEATING, AT A TEMPERATURE OF 125*C. TO 300*C., A LIQUID, LINEAR POLYMERIC BUTADIENE HYDROCARBON WITH AN ESTER SELECTED FROM THE CLASS CONSISTING OF AN ALKYL FUMARATE HAVING FROM 1 TO 8 CARBON ATOMS IN THE ALKYL RADICAL AND AN ALKOXYALKYL FUMARATE HAVING FROM 2 TO 8 CARBON ATOMS IN THE ALKOXYALKYL RADICAL AND TETRAHYDROFURFURYL FUMARATE, AND RECOVERING FROM THE RESULTING REACTION PRODUCT A VISCOUS ADDUCT IN WHICH FROM 1 TO 3 MOLES OF SAID ESTER ARE COMBINED AT EACH OF AT LEAST 5 PERCENT F THE OLEFINIC UNITS OF SAID POLYMERIC HYDROCARBON.
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) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |