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US2951065A
Expired / Lapsed
US
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2-trifluoromethyl-butadiene copolymers and preparation thereof
Assignee: 3M Co
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Filing: 1955-10-28
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Granted: 1960-08-30
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Expires: 1975-10-28
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth S Lo
- 👤 Jr George H Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:20
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/14; C08F236/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS WHICH COMPRISES POLYMERIZING A MIXTURE CONSISTING ESSENTIALLY OF BETWEEN ABOUT 5 AND ABOUT 90 MOL PERCENT OF 2-TRIFLUOROMETHYL-BUTADIENE AND BETWEEN ABOUT 95 AND 10 MOL PERCENT OF A FLUORINATED MONOOLEFIN HAVING A MAXIMUM OF SIX CARBON ATOMS AND HAVING ONLY FLUORINE AND HYDROGEN SUBSTITUENTS ON SAID CARBON ATOMS, SAID POLYMERIZATION BEING EFFECTED AT A TEMPERATURE BETWEEN ABOUT -15*C. AND ABOUT 150*C. IN CONTACT WITH AN INITIATOR SELECTED FROM THE GROUP CONSISTING OF FREE RADICAL FORMING INITIATORS AND IONIC INITIATORS.
Claim 2
Dependent Claim
81 words
A PROCESS WHICH COMPRISES POLYMERIZING A MIXTURE CONSISTING ESSENTIALLY OF BETWEEN ABOUT 5 AND ABOUT 90 MOL PERCENT OF 2-TRIFLUOROMETHYL-BUTADIENE AND BETWEEN ABOUT 95 AND 10 MOL PERCENT OF A FLUORINATED MONOOLEFIN HAVING A MAXIMUM OF SIX CARBON ATOMS AND HAVING ONLY FLUORINE AND HYDROGEN SUBSTITUENTS ON SAID CARBON ATOMS, SAID POLYMERIZATION BEING EFFECTED AT A TEMPERATURE BETWEEN ABOUT -15*C. AND ABOUT 150*C. IN CONTACT WITH AN INITIATOR SELECTED FROM THE GROUP CONSISTING OF FREE RADICAL FORMING INITIATORS AND IONIC INITIATORS.
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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |