Patent US3859265A successfully refreshed from Google Patents.
US3859265A
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Production of polyalkenmers from monomers of norbornene structure containing polar groups
Assignee: Imperial Chemical Industries Ltd
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Filing: 1972-06-21
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Granted: 1975-01-07
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Expires: 1992-06-21
Abstract
Abstract Certain specified norbornene derivatives are polymerised with ring-opening using W, Mo or Ta compounds together with organoaluminum compounds.
Inventors
- 👤 Paul Hepworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:20
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
107 words
A polymerisation process which comprises contacting a norbornene which is in the liquid phase and which is substituted in the five-position by a substituent selected from the group consisting of a -O.COR group, a -COOR group, where R is a C1 to C6 alkyl, a halogen atom and a nitrile group or which is substituted by one of said substituents pendant to the five-position through a methylene radical, with a catalyst consisting essentially of a tungsten, molybdenum or tantalum compound and an organo-metallic compound of aluminum, magnesium, berylium or zinc, the ratio of metal in the organo-metallic compound to tungsten, molybdenum or tantalum being at least 2:1.
Claim 2
Dependent Claim
107 words
A polymerisation process which comprises contacting a norbornene which is in the liquid phase and which is substituted in the five-position by a substituent selected from the group consisting of a -O.COR group, a -COOR group, where R is a C1 to C6 alkyl, a halogen atom and a nitrile group or which is substituted by one of said substituents pendant to the five-position through a methylene radical, with a catalyst consisting essentially of a tungsten, molybdenum or tantalum compound and an organo-metallic compound of aluminum, magnesium, berylium or zinc, the ratio of metal in the organo-metallic compound to tungsten, molybdenum or tantalum being at least 2:1.
Claim 3
Dependent Claim
107 words
A POLYMERISATION PROCESS WHICH COMPRISES CONTACTING A NORBORNENE WHICH IS IN THE LIQUID PHASE AND WHICH IS SUBSTITUTED IN THE FIVE-POSITION BY A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF A -O.COR GROUP, A -COOR GROUP, WHERE R IS A C1 TO C6 ALKYL, A HALOGEN ATOM AND A NITRILE GROUP OR WHICH IS SUBSTITUTED BY ONE OF SAID SUBSTITUENTS PENDANT TO THE FIVE-POSITION THROUGH A METHYLENE RADICAL, WITH A CATALYST CONSISTING ESSENTIALLY OF A TUNGSTEN, MOLYBDENUM OR TANTALUM COMPOUND AND AN ORGANO-METALLIC COMPOUND OF ALUMINUM, MAGNESIUM, BERYLIUM OR ZINC, THE RATIO OF METAL IN THE ORGANOMETALLIC COMPOUND TO TUNGSTEN, MOLYBDENUM OR TANTALUM BEING AT LEAST 2:1.
Claim 4
Dependent Claim
107 words
A POLYMERISATION PROCESS WHICH COMPRISES CONTACTING A NORBORNENE WHICH IS IN THE LIQUID PHASE AND WHICH IS SUBSTITUTED IN THE FIVE-POSITION BY A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF A -O.COR GROUP, A -COOR GROUP, WHERE R IS A C1 TO C6 ALKYL, A HALOGEN ATOM AND A NITRILE GROUP OR WHICH IS SUBSTITUTED BY ONE OF SAID SUBSTITUENTS PENDANT TO THE FIVE-POSITION THROUGH A METHYLENE RADICAL, WITH A CATALYST CONSISTING ESSENTIALLY OF A TUNGSTEN, MOLYBDENUM OR TANTALUM COMPOUND AND AN ORGANO-METALLIC COMPOUND OF ALUMINUM, MAGNESIUM, BERYLIUM OR ZINC, THE RATIO OF METAL IN THE ORGANOMETALLIC COMPOUND TO TUNGSTEN, MOLYBDENUM OR TANTALUM BEING AT LEAST 2:1.
Claim 5
Dependent Claim
19 words
The process of claim 1 in which the five-position of the norbornene is also substituted by an alkyl group.
Claim 6
Dependent Claim
13 words
The process of claim 1 in which a polymerizable cyclic mono-olefine is present.
Claim 7
Dependent Claim
20 words
The process of claim 1 in which an organic solvent is used, the solvent being a cycloaliphatic or aromatic hydrocarbon.
Claim 8
Dependent Claim
37 words
The process of claim 1 in which the catalyst consists essentially of a tungsten halide or oxyhalide, or a molybdenum or tantalum halide together with an aluminum, magnesium, berylium or zinc alkyl, alkyl hydride or alkyl halide.
Claim 9
Dependent Claim
16 words
The process of claim 1 in which the catalyst also contains a peroxide, hydroperoxide or alcohol.
Claim 10
Dependent Claim
108 words
The process of 1 in which the norbornene is 5-substituted substituted norbornene-2 in which the 5-substituent is selected from the group consisting of a -O.COR group, a -COOR group, where R is a C1 to C6 alkyl, chlorine, bromine and a nitrile group or is one of said substituents pendant to the five-position through a methylene group and which is contacted in an aromatic hydrocarbon solvent at -30*C to +70*C with a catalyst consisting essentially of a tungsten halide or oxyhalide, or a molybdenum or tantalum halide together with an aluminum alkyl, alkyl hydride or alkylhalide, the aluminum to tungsten, molybdenum or tantalum ratio being at least 2:1.
Claim 11
Dependent Claim
108 words
The process of 1 in which the norbornene is 5-substituted substituted norbornene-2 in which the 5-substituent is selected from the group consisting of a -O.COR group, a -COOR group, where R is a C1 to C6 alkyl, chlorine, bromine and a nitrile group or is one of said substituents pendant to the five-position through a methylene group and which is contacted in an aromatic hydrocarbon solvent at -30*C to +70*C with a catalyst consisting essentially of a tungsten halide or oxyhalide, or a molybdenum or tantalum halide together with an aluminum alkyl, alkyl hydride or alkylhalide, the aluminum to tungsten, molybdenum or tantalum ratio being at least 2:1.
Claim 12
Dependent Claim
14 words
The process of claim 7 in which a copolymerisable cyclic mono-olefine is also present.
Claim 13
Dependent Claim
22 words
The process of claim 7 in which the norbornene is also substituted in the five-position by a C1 to C6 alkyl group.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |