US4137390A
Expired / Lapsed
US
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Process for the polymerization of cycloolefins
Assignee: Goodyear Tire and Rubber Co
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Filing: 1977-09-07
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Granted: 1979-01-30
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Expires: 1997-09-07
Abstract
Abstract There is disclosed a cycloolefin metathesis process comprising polymerizing (1) an unsaturated alicyclic compound containing 5 carbons and one double bond in the ring and (2) polycyclic non-conjugated diolefins by the use of a catalyst system comprising (a) tungsten halides and oxyhalides, (b) at least one compound such as alkylaluminum sesquihalides, dialkylaluminum halides, alkylaluminum diahlides or trialkylaluminums, (c) an alcohol, and (d) pentachlorophenol or pentabromophenol.
Inventors
- 👤 Eilert A. Ofstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:55
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
174 words
A cycloolefin metathesis polymerization process comprising polymerizing at least one unsaturated alicyclic compound selected from the group consisting of (1) unsaturated alicyclic compounds containing five carbon atoms in the ring and one double bond in the ring and (2) non-conjugated, unsaturated alicyclic compounds containing at least seven carbon atoms in the ring and at least one double bond in the ring, by subjecting said alicyclic compounds or mixtures thereof to polymerization conditions in the presence of a catalyst system comprising (A) at least one transition metal salt selected from the group consisting of tungsten halides and tungsten oxyhalides, (B) at least one compound selected from the group consisting of alkylaluminum sesquihalides, alkylaluminum dihalides, dialkylaluminum halides and trialkylaluminums, (C) at least one hydroxy compound of the general formula ROH wherein R is selected from the group consisting of alkyl, cycloalkyl, alkoxyalkyl, aralkyl and aryl, and (D) pentachlorophenol or pentabromophenol, wherein the molar ratio of A:B:C:D lies within the range of 1:0.5-10:0.5-3:0.1-3 wherein aliphatic or cycloaliphatic hydrocarbons or mixtures thereof are employed as a polymerization solvent.
Claim 2
Dependent Claim
174 words
A cycloolefin metathesis polymerization process comprising polymerizing at least one unsaturated alicyclic compound selected from the group consisting of (1) unsaturated alicyclic compounds containing five carbon atoms in the ring and one double bond in the ring and (2) non-conjugated, unsaturated alicyclic compounds containing at least seven carbon atoms in the ring and at least one double bond in the ring, by subjecting said alicyclic compounds or mixtures thereof to polymerization conditions in the presence of a catalyst system comprising (A) at least one transition metal salt selected from the group consisting of tungsten halides and tungsten oxyhalides, (B) at least one compound selected from the group consisting of alkylaluminum sesquihalides, alkylaluminum dihalides, dialkylaluminum halides and trialkylaluminums, (C) at least one hydroxy compound of the general formula ROH wherein R is selected from the group consisting of alkyl, cycloalkyl, alkoxyalkyl, aralkyl and aryl, and (D) pentachlorophenol or pentabromophenol, wherein the molar ratio of A:B:C:D lies within the range of 1:0.5-10:0.5-3:0.1-3 wherein aliphatic or cycloaliphatic hydrocarbons or mixtures thereof are employed as a polymerization solvent.
Claim 3
Dependent Claim
32 words
A process according to claim 1 carried out at a temperature between -50° C. to +100° C., and wherein the molar ratio of tungsten salt: total monomer is at lest about 1:20,000.
Claim 4
Dependent Claim
12 words
A process according to claim 1 wherein cyclopentene is polymerized or copolymerized.
Claim 5
Dependent Claim
12 words
A process according to claim 2 wherein cyclopentene is polymerized or copolymerized.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-29 | 1982-07-31 | 1983-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-29 | 1986-07-31 | 1987-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-29 | 1990-07-31 | 1991-01-30 | $7700.00 | Window Closed / Lapsed |