US4661575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dicyclopentadiene polymer product
Assignee: Metton America Inc
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Filing: 1986-03-13
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Granted: 1987-04-28
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Expires: 2006-03-13
Abstract
Abstract A novel polymer product comprised of polymerized units of dicyclopentadiene and method of making the same as disclosed.
Inventors
- 👤 Glenn M. Tom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:31
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A substantially crosslinked thermoset polymer comprising polymerized units of dicyclopentadiene, said homopolymer being characterized as having a flexural modulus of at least 150,000 psi at ambient temperature, a notched Izod impact strength of at least about 1.2 ft. lb./in. notch, a plate impact strength at 23° C. of at least about 5 ft. lb. and a percent swell in toluene of less than 200%.
Claim 2
Dependent Claim
64 words
A substantially crosslinked thermoset polymer comprising polymerized units of dicyclopentadiene, said homopolymer being characterized as having a flexural modulus of at least 150,000 psi at ambient temperature, a notched Izod impact strength of at least about 1.2 ft. lb./in. notch, a plate impact strength at 23° C. of at least about 5 ft. lb. and a percent swell in toluene of less than 200%.
References Cited (Backward Citations)
US3627739A
Cited
US4400340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-27 | 1990-10-27 | 1991-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-27 | 1994-10-27 | 1995-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-27 | 1998-10-27 | 1999-04-28 | $7700.00 | Window Closed / Lapsed |