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US4496669A
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Method of making cellular crosslinked poly(dicyclopentadiene)
Assignee: Metton America Inc
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Filing: 1984-06-21
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Granted: 1985-01-29
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Expires: 2004-06-21
Abstract
Abstract Disclosed is an improved method of making a cellular crosslinked polymer with a metathesis-catalyst system where a metathesis-catalyst is activated with an alkylaluminum iodide compound. In a preferred embodiment, two parts of the metathesis-catalyst system form the basis for two solutions, a catalyst/monomer solution and an alkylaluminum iodide activator/monomer solution. At least one solution also contains a blowing agent. The solutions are combined in one place, such as the mixing head of a reaction injection molding machine, and then injected into another place, such as a mold, where the monomer reacts to form a cellular crosslinked polymer.
Inventors
- 👤 Douglas R. Leach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:06
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/12; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08J2345/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
19 words
A foamed cross-linked polymerized dicyclopentadiene polymer composition comprising: (a) cross-linked polymerized dicyclopentadiene polymer; and (b) a dialkylaluminum iodide component.
Claim 2
Dependent Claim
19 words
A foamed cross-linked polymerized dicyclopentadiene polymer composition comprising: (a) cross-linked polymerized dicyclopentadiene polymer; and (b) a dialkylaluminum iodide component.
Claim 3
Dependent Claim
9 words
The composition of claim 1 further comprising an elastomer.
Claim 4
Dependent Claim
13 words
The composition of claim 1 further comprising at least one additional polymerized cycloolefin.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein said dialkylaluminum iodide compound is diethylaluminum iodide.
Claim 6
Dependent Claim
13 words
The composition of claim 3 wherein said cycloolefin is norbornene, norbornadiene or cyclopentadiene.
Claim 7
Dependent Claim
11 words
A polymerization feed composition comprising dicyclopentadiene and a dialkylaluminum iodide compound.
Claim 8
Dependent Claim
11 words
A polymerization feed composition comprising dicyclopentadiene and a dialkylaluminum iodide compound.
Claim 9
Dependent Claim
13 words
The composition of claim 6 wherein said dialkylaluminum iodide compound is diethylaluminum iodide.
Claim 10
Dependent Claim
9 words
The composition of claim 6 further comprising an elastomer.
Claim 11
Dependent Claim
9 words
The composition of claim 6 further comprising a catalyst.
Claim 12
Dependent Claim
13 words
The composition of claim 6 further comprising at least one additional cycloolefin monomer.
Claim 13
Dependent Claim
15 words
The composition of claim 9 wherein said catalyst is WCl 6 or WOCl 4 .
Claim 14
Dependent Claim
15 words
The composition of claim 10 wherein said additional cycloolefin monomer is norbornene, norbornadiene or cyclopentene.
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) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |