US4496668A
Expired / Lapsed
US
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Cellular thermoset poly(dicyclopentadiene)
Assignee: Metton America Inc
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Filing: 1984-05-14
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Granted: 1985-01-29
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Expires: 2004-05-14
Abstract
Abstract A cellular thermoset polymer comprised of polymerized units of dicyclopentadiene monomer, wherein the cells of said cellular polymer are small and uniform.
Inventors
- 👤 Norman R. Newburg, deceased
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:41
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/0061; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; C08J9/0066; C08J9/12; C08J9/14; C08J2345/00; C08J2421/00; Y; Y10; Y10S; Y10S521/00; Y10S521/908
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
22 words
A cellular thermoset polymer comprised of polymerized units of dicyclopentadiene monomer, wherein the cells of said cellular polymer are small and uniform.
Claim 2
Dependent Claim
22 words
A cellular thermoset polymer comprised of polymerized units of dicyclopentadiene monomer, wherein the cells of said cellular polymer are small and uniform.
Claim 3
Dependent Claim
10 words
The polymer of claim 1 further comprising a nucleating agent.
Claim 4
Dependent Claim
20 words
The polymer of claim 2 wherein said nucleating agent is talc, magnesium carbonate, barium carbonate, zinc carbonate, or lead carbonate.
Claim 5
Dependent Claim
22 words
The polymer of claim 2 wherein said nucleating agent is magnesium oxide, calcium oxide, barium oxide, zinc oxide, lead oxide or silica.
Claim 6
Dependent Claim
36 words
The polymer of claim 1 further comprising up to about 10% based on the weight of dicyclopentadiene of another monomer selected from the group consisting of norbornene and norbornadiene, wherein said cells are small and uniform.
References Cited (Backward Citations)
US4029840A
Cited
US4400340A
Cited
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 |