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US4604447A
Expired / Lapsed
US
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Halogen-free, high flash point reactant solution
Assignee: Hercules LLC
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Filing: 1983-11-22
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Granted: 1986-08-05
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Expires: 2003-11-22
Abstract
Abstract Disclosed is a reactant solution comprised of dicyclopentadiene; trialkyl aluminum, where each alkyl contains from 5 to 10 carbon atoms and where the trialkyl aluminum is present in a dicyclopentadiene to trialkyl aluminum molar ratio of about 80:1 to about 1300:1; and bis(2-methoxyethyl)ether, where the bis(2-methoxyethyl)ether is present in a trialkyl aluminum to bis(2-methoxyethyl)ether ratio of at least 1:0.5. Such a solution, which is both halogen-free and has a flash point greater than 100° F., is useful as a reactant solution in the metathetical-polymerization of the dicyclopentadiene.
Inventors
- 👤 Gerald D. Malpass, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:20
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
72 words
A halogen-free polymerization reactant solution useful in metathesis-catalysis comprising dicyclopentadiene; trialkyl aluminum, where each alkyl contains from 5 to 10 carbon atoms and where the trialkyl aluminum is present in a dicyclopentadiene to trialkyl aluminum molar ratio of about 80:1 to about 1300:1; and bis(2-methoxyethyl)ether, where the bis(2-methoxyethyl)ether is present in a trialkyl aluminum to bis(2-methoxyethyl)ether ratio of at least 1:0.5, said reactant solution having a flash point greater than 100° F.
Claim 2
Dependent Claim
72 words
A halogen-free polymerization reactant solution useful in metathesis-catalysis comprising dicyclopentadiene; trialkyl aluminum, where each alkyl contains from 5 to 10 carbon atoms and where the trialkyl aluminum is present in a dicyclopentadiene to trialkyl aluminum molar ratio of about 80:1 to about 1300:1; and bis(2-methoxyethyl)ether, where the bis(2-methoxyethyl)ether is present in a trialkyl aluminum to bis(2-methoxyethyl)ether ratio of at least 1:0.5, said reactant solution having a flash point greater than 100° F.
Claim 3
Dependent Claim
23 words
The halogen-free polymerization reactant solution of claim 1 wherein the molar ratio of dicyclopentadiene to trialkyl aluminum is about 200:1 to about 500:1.
Claim 4
Dependent Claim
15 words
The halogen-free polymerization reactant solution of claim 1 wherein the trialkyl aluminum is tri-n-octyl aluminum.
Claim 5
Dependent Claim
15 words
The halogen-free polymerization reactant solution of claim 2 wherein the trialkyl aluminum is tri-n-octyl aluminum.
Claim 6
Dependent Claim
33 words
The halogen-free polymerization reactant solution of claim 1 further comprising a preformed elastomer present in an amount of from about 3 to about 15 weight percent, based on the weight of the dicyclopentadiene.
Claim 7
Dependent Claim
33 words
The halogen-free polymerization reactant solution of claim 2 further comprising a preformed elastomer present in an amount of from about 3 to about 15 weight percent, based on the weight of the dicyclopentadiene.
Claim 8
Dependent Claim
33 words
The halogen-free polymerization reactant solution of claim 3 further comprising a preformed elastomer present in an amount of from about 3 to about 15 weight percent, based on the weight of the dicyclopentadiene.
Claim 9
Dependent Claim
33 words
The halogen-free polymerization reactant solution of claim 4 further comprising a preformed elastomer present in an amount of from about 3 to about 15 weight percent, based on the weight of the dicyclopentadiene.
Claim 10
Dependent Claim
24 words
The halogen-free polymerization reactant solution of claim 1 wherein the molar ratio of trialkyl aluminum to bis(2-methoxyethyl)ether is from about 1:1 to about 1:4.
Claim 11
Dependent Claim
24 words
The halogen-free polymerization reactant solution of claim 4 wherein the molar ratio of trialkyl aluminum to bis(2-methoxyethyl)ether is from about 1:1 to about 1:4.
Claim 12
Independent Claim
93 words
A method for providing a halogen-free reactant solution having a flash point greater than 100° F., useful in metathesis-catalysis polymerization, comprising: providing a halogen-free reactant solution, said reactant solution comprising dicyclopentadiene; trialkyl aluminum, where each alkyl contains from 5 to 10 carbon atoms and where the trialkyl aluminum is present in a dicyclopentadiene to trialkyl aluminum molar ratio of about 80:1 to about 1300:1; and bis(2-methoxyethyl)ether, where the bis(2-methoxyethyl)ether is present in a trialkyl aluminum to bis(2-methoxyethyl)ether ratio of at least 1:0.5, said reactant solution having a flash point greater than 100° F.
Claim 13
Independent Claim
93 words
A method for providing a halogen-free reactant solution having a flash point greater than 100° F., useful in metathesis-catalysis polymerization, comprising: providing a halogen-free reactant solution, said reactant solution comprising dicyclopentadiene; trialkyl aluminum, where each alkyl contains from 5 to 10 carbon atoms and where the trialkyl aluminum is present in a dicyclopentadiene to trialkyl aluminum molar ratio of about 80:1 to about 1300:1; and bis(2-methoxyethyl)ether, where the bis(2-methoxyethyl)ether is present in a trialkyl aluminum to bis(2-methoxyethyl)ether ratio of at least 1:0.5, said reactant solution having a flash point greater than 100° F.
Claim 14
Dependent Claim
20 words
The method of claim 11 wherein the molar ratio of dicyclopentadiene to trialkyl aluminum is about 200:1 to about 500:1.
Claim 15
Dependent Claim
12 words
The method of claim 11 wherein the trialkyl aluminum is tri-n-octyl aluminum.
Claim 16
Dependent Claim
12 words
The method of claim 12 wherein the trialkyl aluminum is tri-n-octyl aluminum.
Claim 17
Dependent Claim
30 words
The method of claim 11 further comprising a preformed elastomer present in an amount of from about 3 to about 15 weight percent, based on the weight of the dicyclopentadiene.
Claim 18
Dependent Claim
30 words
The method of claim 12 further comprising a preformed elastomer present in an amount of from about 3 to about 15 weight percent, based on the weight of the dicyclopentadiene.
Claim 19
Dependent Claim
30 words
The method of claim 13 further comprising a preformed elastomer present in an amount of from about 3 to about 15 weight percent, based on the weight of the dicyclopentadiene.
Claim 20
Dependent Claim
30 words
The method of claim 14 further comprising a preformed elastomer present in an amount of from about 3 to about 15 weight percent, based on the weight of the dicyclopentadiene.
Claim 21
Dependent Claim
21 words
The method of claim 11 wherein the molar ratio of trialkyl aluminum to bis(2-methoxyethyl)ether is from about 1:1 to about 1:4.
Claim 22
Dependent Claim
21 words
The method of claim 14 wherein the molar ratio of trialkyl aluminum to bis(2-methoxyethyl)ether is from about 1:1 to about 1:4.
Claim 23
Dependent Claim
20 words
A method of claim 11 further comprising up to about 20% of one or more other metathesis polymerizable, cycloolefin monomer.
Claim 24
Dependent Claim
22 words
The halogen-free polymerization solution of claim 1 further comprising up to about 20% of one or more other metathesis polymerizable, cycloolefin monomer.
References Cited (Backward Citations)
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US3960765A
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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) | 1989-08-04 | 1990-02-03 | 1990-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-04 | 1994-02-03 | 1994-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-04 | 1998-02-03 | 1998-08-05 | $7700.00 | Window Closed / Lapsed |