US3974092A
Expired / Lapsed
US
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Catalyst for the preparation of polyalkenamers
Assignee: Huels AG
•
Filing: 1974-01-07
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Granted: 1976-08-10
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Expires: 1994-01-07
Abstract
Abstract For the production of polyalkenamers there are provided catalysts consisting essentially of a catalyst system for the ring-opening polymerization of cyclic olefins consisting essentially of (1) a tungsten or molybdenum compound; (2) an organoaluminum compound; and (3) an ether of vinyl alcohol, of allyl alcohol, or of 2-butene-1,4-diol, the molar ratio of component (1) to component (2) being less than 1 : 1 and the molar ratio of component (1) to component (3) being less than 100 : 1. The catalyst system may also contain a compound containing one or more hydroxyl or sulfhydryl groups in a molar ratio to component (1) of about 0 : 1 to 2 : 1, respectively.
Inventors
- 👤 Roland Streck
- 👤 Heinrich Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
In a catalyst system for the ring-opening polymerization of cyclic olefins consisting essentially of: (1) a tungsten or molybdenum compound; (2) an organoaluminum compound; and (3) a compound containing one or more hydroxyl or sulfhydryl groups; the improvement of (4) an ether of vinyl alcohol, allyl alcohol or 2-butene-1,4 diol, the molar ratio of component (1) to component (2) being less than 1 : 1, the molar ratio of component (1) to component (3) being about 1 : 0 to 1 : 2 and the molar ratio of component (1) to component (4) being less than 100 : 1.
Claim 2
Dependent Claim
99 words
In a catalyst system for the ring-opening polymerization of cyclic olefins consisting essentially of: (1) a tungsten or molybdenum compound; (2) an organoaluminum compound; and (3) a compound containing one or more hydroxyl or sulfhydryl groups; the improvement of (4) an ether of vinyl alcohol, allyl alcohol or 2-butene-1,4 diol, the molar ratio of component (1) to component (2) being less than 1 : 1, the molar ratio of component (1) to component (3) being about 1 : 0 to 1 : 2 and the molar ratio of component (1) to component (4) being less than 100 : 1.
Claim 3
Dependent Claim
15 words
A catalyst according to claim 1 wherein component (1) is tungsten hexachloride or tungsten oxytetrachloride.
Claim 4
Dependent Claim
15 words
A catalyst system according to claim 1 wherein component (2) is an alkyl aluminum halide.
Claim 5
Dependent Claim
18 words
A catalyst system according to claim 1 wherein component (2) is ethylaluminum dichloride, ethylaluminum sesquichloride or diethylaluminum monochloride.
Claim 6
Dependent Claim
23 words
A catalyst system according to claim 1 wherein component (4) is a phenol ether of vinyl alcohol, of allyl alcohol or of 2-butene-1,4-diol.
Claim 7
Dependent Claim
14 words
A catalyst system according to claim 5 wherein the phenol is a halogenated phenol.
Claim 8
Dependent Claim
23 words
A catalyst system according to claim 1 wherein the molar ratio of component (1) to component (4) is less than 10 : 1.
Claim 9
Dependent Claim
26 words
A catalyst system according to claim 1 wherein the molar ratio of component (1) to component (3) is about 1 : 0.1 to 1 : 2.
Claim 10
Dependent Claim
23 words
A catalyst system according to claim 1 wherein the molar ratio of component (2) to component (4) is greater than 1 : 1.
Claim 11
Dependent Claim
42 words
A catalyst system according to claim 1 wherein the molar ratio of component (1) to the difference of the amounts employed of component (2) minus the sum of components (3) and (4) is between about 1 : 1 and 1 : 4.
References Cited (Backward Citations)
US3320227A
Cited
US3459725A
Cited
US3492245A
Cited
US3583958A
Cited
US3632849A
Cited
US3798175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |