US3231554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl ether polymerization process using an alkylaluminum dihalide
Assignee: Monsanto Co
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Filing: 1962-06-14
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Granted: 1966-01-25
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Expires: 1982-06-14
Abstract
No abstract record available.
Inventors
- 👤 Roland J Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:40
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/064; C08; C08F; C08F16/00; C08F16/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
THE PROCESS OF POLYMERIZING A VINYL ETHER HAVING THE FORMULA CH2=CHOR, WHERE R IS SELECTED FROM THE GROUP CONSISTING OF A ALKYL RADICALS OF 1 TO 14 CARBON ATOMS, HALOALKYL RADICALS OF 1 TO 10 CARBON ATOMS CONTAINING 1 TO 3 HALOGEN ATOMS, WHEREIN EACH HALOGEN HAS AN ATOMIC WEIGHT OF AT LEAST 35, AND HALOARYL RADICALS OF 6 TO 10 CARBON ATOMS CONTAINING 1 TO 5 HALOGEN ATOMS WHEREIN EACH HALOGEN HAS AN ATOMIC WEIGHT OF AT LEAST 35 TO SOLID, HIGH MOLECULAR WEIGHT POLYMER OF STEROSPECIFIC STRUCTURE WHICH COMPRISES CONTACTING SAID VINYL ETHER WITH A CATALYST OF THE FORMULA R''AIXF, WHEREIN R'' IS AN ALKYL RADICAL OF FROM 1 TO 12 CARBON ATOMS, AND X IS A HALOGEN, SAID CATALYST BEING PREPARED BY THE REACTION OF A FLUORINATING AGENT WITH AN ALKYLALUMINUM DIHALIDE WHEREIN SAID HALIDE IS SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, BROMIDE AND IODIDE.
Claim 2
Dependent Claim
149 words
THE PROCESS OF POLYMERIZING A VINYL ETHER HAVING THE FORMULA CH2=CHOR, WHERE R IS SELECTED FROM THE GROUP CONSISTING OF A ALKYL RADICALS OF 1 TO 14 CARBON ATOMS, HALOALKYL RADICALS OF 1 TO 10 CARBON ATOMS CONTAINING 1 TO 3 HALOGEN ATOMS, WHEREIN EACH HALOGEN HAS AN ATOMIC WEIGHT OF AT LEAST 35, AND HALOARYL RADICALS OF 6 TO 10 CARBON ATOMS CONTAINING 1 TO 5 HALOGEN ATOMS WHEREIN EACH HALOGEN HAS AN ATOMIC WEIGHT OF AT LEAST 35 TO SOLID, HIGH MOLECULAR WEIGHT POLYMER OF STEROSPECIFIC STRUCTURE WHICH COMPRISES CONTACTING SAID VINYL ETHER WITH A CATALYST OF THE FORMULA R''AIXF, WHEREIN R'' IS AN ALKYL RADICAL OF FROM 1 TO 12 CARBON ATOMS, AND X IS A HALOGEN, SAID CATALYST BEING PREPARED BY THE REACTION OF A FLUORINATING AGENT WITH AN ALKYLALUMINUM DIHALIDE WHEREIN SAID HALIDE IS SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, BROMIDE AND IODIDE.
References Cited (Backward Citations)
US3133906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |