US3793262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating copolymers of ethylene/alkyl acrylates and a process for their preparation
Assignee: EIDP Inc
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Filing: 1972-02-29
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Granted: 1974-02-19
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Expires: 1992-02-29
Abstract
Abstract A SUBSTANTIALLY LINEAR ALTERNATING COPOLYMER HAVING A GLASS TRANSITION TEMPERATURE LOWER THAN ABOUT 0*C AND AN INHERENT VISCOSITY OF ABOUT 1 TO ABOUT 6 (MEASURED ON A 0.1 WEIGHT PERCENT SOLUTION IN CHLOROFORM AT 30* C) SAID COPOLYMER CONSISTING ESSENTIALLY OF ABOUT 50 MOLE PERCENT OF UNITS DERIVED FROM AT LEAST ONE ALKYL ACRYLATE SAID ALKYL HAVING 2 TO 8 CARBON ATOMS, THE BALANCE BEING ETHYLENE UNITS. A PROCESS FOR THE PREPARATION OF THESE COPOLYMERS WHICH CONSISTS ESSENTIALLY OF REACTING MONOMERS IN THE PRESENCE OF BORON TRIFLUORIDE AND A FREE RADICAL INITATOR. THE COPOLYMERS ARE PARTICULARLY USEFUL AS ELASTOMERS.
Inventors
- 👤 A Logothetis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:05
CPC Classifications
C; C08; C08F; C08F10/00; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1802; C08F220/1804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |