Patent US2645314A successfully refreshed from Google Patents.
Patent US3853830A successfully refreshed from Google Patents.
US3853830A
Expired / Lapsed
US
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Process for preparing polymers of cyclopentene
Assignee: Goodrich Corp
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Filing: 1973-03-02
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Granted: 1974-12-10
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Expires: 1993-03-02
Abstract
Abstract Cyclopentene homopolymers and copolymers are prepared in a process comprising polymerizing cyclopentene monomers alone or with one or more cyclic co-monomer olefins with a catalyst comprising an organoaluminum compound, iodine and a tungsten salt or molybdenum salt or mixture thereof.
Inventors
- 👤 R Minchak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:39
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
A PROCESS FOR POLYMERIZING CYCLOPENTENE WITH A CATALYST COMPRISING (A) AT LEAST ONE ORGANOLAMINUM COMPOUND OF THE FORMULA AIR3 WHEREIN R IS AN ALKYL RADICAL CONTAINING 1 TO 12 CARBON TOMS, (B) IODINE, AND (C) AT LEAST ONE TUNGSTEN OR MOLYBDENUM SALT OR MIXTURE THEREOF WHEREIN THE AMOHNT OF SAID SALT IS FROM ABOUT 0.01 TO ABOUT 10 MILLIMOLES PER MOLE OF CYCLOPENTENE MONOMER, THE MOLAR RATIO OF B/A IS FROM ABOUT 0.1/1 TO ABOUT 10.1, AND THE MOLAR RATIO OF A/C IS FROM ABOUT 0.2/1 TO ABOUT 20.1.
Claim 2
Dependent Claim
89 words
A PROCESS FOR POLYMERIZING CYCLOPENTENE WITH A CATALYST COMPRISING (A) AT LEAST ONE ORGANOLAMINUM COMPOUND OF THE FORMULA AIR3 WHEREIN R IS AN ALKYL RADICAL CONTAINING 1 TO 12 CARBON TOMS, (B) IODINE, AND (C) AT LEAST ONE TUNGSTEN OR MOLYBDENUM SALT OR MIXTURE THEREOF WHEREIN THE AMOHNT OF SAID SALT IS FROM ABOUT 0.01 TO ABOUT 10 MILLIMOLES PER MOLE OF CYCLOPENTENE MONOMER, THE MOLAR RATIO OF B/A IS FROM ABOUT 0.1/1 TO ABOUT 10.1, AND THE MOLAR RATIO OF A/C IS FROM ABOUT 0.2/1 TO ABOUT 20.1.
Claim 3
Dependent Claim
17 words
A process of claim 1 wherein R is an alkyl radical containing 2 to 6 carbon atoms.
Claim 4
Dependent Claim
10 words
A process of claim 1 wherein (C) is a halide.
Claim 5
Dependent Claim
10 words
A process of claim 2 wherein (C) is a halide.
Claim 6
Dependent Claim
10 words
A process of claim 4 wherein (C) is tungsten hexachloride.
Claim 7
Dependent Claim
10 words
A process of claim 5 wherein R is triethyl aluminum.
Claim 8
Dependent Claim
13 words
A process of claim 1 wherein the monomer is dissolved in a solvent.
Claim 9
Dependent Claim
10 words
A process of claim 7 wherein the solvent is benzene.
Claim 10
Dependent Claim
14 words
A process of claim 1 wherein at least one other cyclic olefin is included.
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) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |