Patent US4095033A successfully refreshed from Google Patents.
US4095033A
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Process for the polymerization of cycloolefins
Assignee: Huels AG
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Filing: 1977-03-15
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Granted: 1978-06-13
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Expires: 1997-03-15
Abstract
Abstract Cycloolefins of 8 or 12 carbon atoms and with one or more non-conjugated double bonds in the ring can be polymerized, optionally in the presence of a solvent, with the aid of a catalyst of tungsten hexachloride and cis,trans-1,5-cyclodecadiene as the cocatalyst.
Inventors
- 👤 Friedrich-Wilhelm Kuepper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:09
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
61 words
In a process for the polymerization of a cycloolefin monomer of 8 or 12 carbon atoms having one or more non-conjugated double bonds in the ring with the aid of a catalyst consisting of tungsten hexachloride and a cocatalyst, the improvement which comprises employing cis,trans-1,5-cyclodecadiene as the cocatalyst in a molar ratio to tungsten hexachloride of at least 2 : 1.
Claim 2
Dependent Claim
61 words
In a process for the polymerization of a cycloolefin monomer of 8 or 12 carbon atoms having one or more non-conjugated double bonds in the ring with the aid of a catalyst consisting of tungsten hexachloride and a cocatalyst, the improvement which comprises employing cis,trans-1,5-cyclodecadiene as the cocatalyst in a molar ratio to tungsten hexachloride of at least 2 : 1.
Claim 3
Dependent Claim
16 words
A process according to claim 1, wherein the cycloolefin employed is cis-cyclooctene, cis,cis-1,5-cyclooctadiene, cyclododecene or cis,trans,trans-1,5,9-cyclododecatriene.
Claim 4
Dependent Claim
19 words
A process according to claim 2, wherein the cycloolefin is cis-cyclooctene and said molar ratio is 20-60 : 1.
Claim 5
Dependent Claim
19 words
A process according to claim 2, wherein the cycloolefin is cis,cis-1,5-cyclooctadiene and said molar ratio is 5-30 : 1.
Claim 6
Dependent Claim
19 words
A process according to claim 2, wherein the cycloolefin is cyclododecene and said molar ratio is 20-250 : 1.
Claim 7
Dependent Claim
19 words
A process according to claim 2, wherein the cycloolefin is cis,trans,trans-1,5,9-cyclododecatriene and said molar ratio is 10-70 : 1.
Claim 8
Dependent Claim
20 words
A process according to claim 1, wherein the molar ratio of cycloolefin to tungsten hexachloride is about 500-2,500 : 1.
Claim 9
Dependent Claim
15 words
A process according to claim 1, wherein the polymerization is conducted in an inert diluent.
Claim 10
Dependent Claim
18 words
A process according to claim 1, wherein polymerization is effected at a temperature of -20° to +80° C.
Claim 11
Dependent Claim
13 words
A process according to claim 9, wherein said temperature is 10° -40° C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |