US4826942A
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Process for preparing molded objects using a rate moderated two component metathesis catalyst system
Assignee: Metton America Inc
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Filing: 1987-05-18
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Granted: 1989-05-02
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Expires: 2007-05-18
Abstract
Abstract Disclosed is a method of reducing the activation rate of an alkyl aluminum activator in the metathesis polymerization of polycyclic cycloolefins. Activation rate is reduced by use of a bidentate Lewis base as the reaction rate moderator.
Inventors
- 👤 Lawrence L. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:13
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/38; C08F2/40; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
84 words
In a process for preparing molded objects wherein a liquid reaction mass comprised of a metathesis polymerizable polycyclic cycloolefin, a methathesis polymerization catalyst, an alkyl aluminum catalyst activator and a reaction rate moderator are charged to a mold wherein polymerization will take place, the improvement wherein said reaction rate moderator comprises a bidentate Lewis base having one functional group which is chemically reactive with aluminum and a second functional group containing an atom having unpaired electrons whereby it can form an adduct with aluminum.
Claim 2
Dependent Claim
84 words
In a process for preparing molded objects wherein a liquid reaction mass comprised of a metathesis polymerizable polycyclic cycloolefin, a methathesis polymerization catalyst, an alkyl aluminum catalyst activator and a reaction rate moderator are charged to a mold wherein polymerization will take place, the improvement wherein said reaction rate moderator comprises a bidentate Lewis base having one functional group which is chemically reactive with aluminum and a second functional group containing an atom having unpaired electrons whereby it can form an adduct with aluminum.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein the catalyst activator comprises a dialkyl aluminum halide.
Claim 4
Dependent Claim
32 words
The process of claim 1 wherein the catalyst activator comprises a mixture of a trialkyl aluminum and a dialkyl aluminum halide wherein the alkyl groups have about 2 to 10 carbon atoms.
Claim 5
Dependent Claim
14 words
The process of claim 2 wherein the dialkyl aluminum halide comprises dialkyl aluminum iodide.
Claim 6
Dependent Claim
14 words
The process of claim 3 wherein the dialkyl aluminum halide comprises dialkyl aluminum iodide.
Claim 7
Dependent Claim
13 words
The process of claim 4 wherein the bidentate Lewis base is tetrahydrofurfuryl alcohol.
Claim 8
Dependent Claim
12 words
The process of claim 4 wherein the bidentate Lewis base is 8-hydroxyquinoline.
Claim 9
Dependent Claim
73 words
The process of claim 4 wherein the bidentate Lewis base is a compound selected from the class of compounds having the formula: ##STR3## Where R is a 1 to 5 carbon alkyl radical or a phenyl or benzyl radical, R' is a 1 to 5 carbon alkyl radical or hydrogen, and in instances where a plurality of R or R' groups are present in a structure, they may be the same or different.
Claim 10
Dependent Claim
12 words
The process of claim 8 wherein the bidentate Lewis base is acetylacetone.
Claim 11
Dependent Claim
12 words
The process of claim 8 wherein the bidentate Lewis base is dibenzoylmethane.
Claim 12
Dependent Claim
13 words
The process of claim 5 wherein the bidentate Lewis base is tetrahydrofurfuryl alcohol.
Claim 13
Dependent Claim
12 words
The process of claim 5 wherein the bidentate Lewis base is 8-hydroxyquinoline.
Claim 14
Dependent Claim
73 words
The process of claim 5 wherein the bidentate Lewis base is a compound selected from the class of compounds having the formula: ##STR4## Where R is a 1 to 5 carbon alkyl radical or a phenyl or benzyl radical, R' is a 1 to 5 carbon alkyl radical or hydrogen, and in instances where a plurality of R or R' groups are present in a structure, they may be the same or different.
Claim 15
Dependent Claim
12 words
The process of claim 13 wherein the bidentate Lewis base is acetylacetone.
Claim 16
Dependent Claim
12 words
The process of claim 13 wherein the bidentate Lewis base is dibenzoylmethane.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
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