US3954699A
Expired / Lapsed
US
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Process for polymerizing cycloolefines
Assignee: Kanegafuchi Chemical Industry Co Ltd
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Filing: 1974-08-30
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Granted: 1976-05-04
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Expires: 1994-08-30
Abstract
Abstract A Process for polymerizing cycloolefins by ring opening reaction using heterogeneous catalyst containing tungsten trioxide and Lewis acid or tungsten trioxide, Lewis acid and organoaluminum compound as the polymerization catalyst.
Inventors
- 👤 Shoichi Matsumura
- 👤 Itaru Hatano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:16
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A process for manufacturing a polymer, comprising the steps of preparing a heterogeneous catalyst by mixing at a temperature below 80°C tungsten trioxide and Lewis acid in a molar ratio of from 1:3 to 1:30, or by mixing at a temperaure below 80°C tungsten trioxide, Lewis acid (except organo aluminum compound) and organo aluminum compound in a molar ration of from 1:(3-30):(3-30); and polymerizing cycloolefins having at least one double bond in a ring structure consisting of from 7 to 12 carbons, at a temperature within the range of from -50°C to 80°C, in the presence of said heterogeneous catalyst, wherein said tungsten trioxide and said cycloolefin are in amounts in the molar ratio of from 1:100 to 1:10000.
Claim 2
Dependent Claim
119 words
A process for manufacturing a polymer, comprising the steps of preparing a heterogeneous catalyst by mixing at a temperature below 80°C tungsten trioxide and Lewis acid in a molar ratio of from 1:3 to 1:30, or by mixing at a temperaure below 80°C tungsten trioxide, Lewis acid (except organo aluminum compound) and organo aluminum compound in a molar ration of from 1:(3-30):(3-30); and polymerizing cycloolefins having at least one double bond in a ring structure consisting of from 7 to 12 carbons, at a temperature within the range of from -50°C to 80°C, in the presence of said heterogeneous catalyst, wherein said tungsten trioxide and said cycloolefin are in amounts in the molar ratio of from 1:100 to 1:10000.
Claim 3
Dependent Claim
20 words
Process of claim 1, wherein said cycloolefin is selected from the group consisting of 1,5-cyclooctadiene, 1,5,9-cyclododecatriene, cyclooctene and mixtures thereof.
Claim 4
Dependent Claim
25 words
Process of claim 1, wherein said Lewis acid is AlCl 3 , AlBr 3 , TiCl 4 , VCl 4 , or VOCl 3 .
Claim 5
Dependent Claim
17 words
Process of claim 1, wherein said organoaluminum compound is aluminum trialkyl, aluminum haloalkyl or a mixture thereof.
Claim 6
Dependent Claim
11 words
Process of claim 1, wherein said Lewis acid is aluminum trichloride.
Claim 7
Dependent Claim
15 words
Process of claim 1, wherein aluminum trichloride is first mixed and kneaded with tungsten trioxide.
Claim 8
Dependent Claim
41 words
Process of claim 1, wherein any one or more of the following are added to said catalyst; C 2 H 5 AlCl 2 ; (C 2 H 5 ) 2 AlCl; (C 2 H 5 ) 3 Al and mixtures thereof.
Claim 9
Dependent Claim
18 words
Process of claim 1, wherein polymerization is in the presence of aliphatic hydrocarbon, aromatic hydrocarbon, or halogenated hydrocarbon.
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) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |