US4696985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst composition for polymerization of cycloolefins
Assignee: Metton America Inc
•
Filing: 1986-03-27
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Granted: 1987-09-29
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Expires: 2006-03-27
Abstract
Abstract The invention relates to a catalyst composition for polymerization of norbornene-type monomer: including WCl 4 O and WCl 6 in a molar ratio of WCl 4 O to WCl 6 from 1:9 to 1:1 (i.e., 10-50% WOCl 4 and 90-50% WCl 6 ). The method of making catalyst includes: providing catalyst precursor material, the major portion of which is WCl 6 , and contacting controlled proportions of the oxygen donor and WCl 6 to form WCl 4 O in a molar ratio to WCl 6 of between 1:9 and 1:1.
Inventors
- 👤 Andrea E. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:11
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
139 words
A method of forming a polymerizable cycloolefin solution comprising: (a) providing cycloolefin defined by the following formulas: ##STR16## wherein R and R 1 are independently selected from hydrogen, alkyl groups of 1 to 20 carbon atoms, and saturated and unsaturated hydrocarbon cyclic groups formed by R and R 1 together with the two ring carbon atoms, R 2 and R 3 are independently selected from hydrogen and alkyl groups containing 1 to 20 carbon atoms, (b) providing WCl 6 ; (c) providing an oxygen transfer agent; (d) transferring a controlled proportion of oxygen from said oxygen transfer agent to said WCl 6 to form a mixture of WCl 4 O and WCl 6 , said mixture having substantial activity for the polymerization of said cycloolefin; and (e) combining said mixture with said cycloolefin to form a polymerizable cycloolefin solution.
Claim 2
Independent Claim
139 words
A method of forming a polymerizable cycloolefin solution comprising: (a) providing cycloolefin defined by the following formulas: ##STR16## wherein R and R 1 are independently selected from hydrogen, alkyl groups of 1 to 20 carbon atoms, and saturated and unsaturated hydrocarbon cyclic groups formed by R and R 1 together with the two ring carbon atoms, R 2 and R 3 are independently selected from hydrogen and alkyl groups containing 1 to 20 carbon atoms, (b) providing WCl 6 ; (c) providing an oxygen transfer agent; (d) transferring a controlled proportion of oxygen from said oxygen transfer agent to said WCl 6 to form a mixture of WCl 4 O and WCl 6 , said mixture having substantial activity for the polymerization of said cycloolefin; and (e) combining said mixture with said cycloolefin to form a polymerizable cycloolefin solution.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said oxygen transfer agent is t-butanol.
Claim 4
Dependent Claim
19 words
The method of claim 1 wherein at least 50 percent by weight of said polymerizable cycloolefin solution comprises cycloolefin.
Claim 5
Dependent Claim
19 words
The method of claim 1 wherein at least 75 percent by weight of said polymerizable cycloolefin solution comprises cycloolefin.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein said polymerizable cycloolefin solution further comprises an activator.
Claim 7
Dependent Claim
13 words
The method of claim 5 wherein said activator is an alkyl aluminum activator.
Claim 8
Dependent Claim
25 words
The method of claim 1 further comprising providing an activator, and adding said activator to said polymerizable cycloolefin solution to form a reactive olefin solution.
Claim 9
Dependent Claim
24 words
The method of claim 7 wherein said reactive cycloolefin solution polymerizes to form a cross-linked polymer having less than about 2.0% residual cycloolefin monomer.
Claim 10
Dependent Claim
24 words
The method of claim 1 wherein the molar ratio of WCl 4 O to WCl 6 in said mixture is from 1:9 to 1:1.
Claim 11
Dependent Claim
29 words
The method of claim 1 wherein said mixture is from 10 to 50 percent by weight WOCl 4 and from 90 to 50 percent by weight WCl 6 .
Claim 12
Dependent Claim
24 words
The method of claim 1 wherein said cycloolefin and said mixture are combined in a molar ratio of from about 500:1 to about 15,000:1.
Claim 13
Dependent Claim
34 words
The method of claim 1 wherein said transferring of a controlled proportion of oxygen includes combining said oxygen transfer agent and WCl 6 in a molar ratio of from about 0.25 to about 0.75.
Claim 14
Dependent Claim
45 words
The method of claim 1 wherein said mixture is sufficiently active to catalyze the substantially complete polymerization of said cycloolefin and to substantially reach the peak of the exotherm within about a minute when an effective amount of said mixture is combined with said cycloolefin.
Claim 15
Dependent Claim
33 words
The method of claim 7 wherein said reactive cycloolefin solution polymerizes to form a cross-linked polymer wherein at least 95 percent by weight of said reactive cycloolefin solution polymerizes to form said polymer.
Claim 16
Dependent Claim
18 words
The method of claim 1 wherein said mixture does not include a substantial proportion of WO 3 .
Claim 17
Dependent Claim
20 words
The method of claim 1 wherein said mixture does not include a substantial proportion of WO 2 Cl 2 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |