US3637578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester-polyphenylene ether mixed resins
Assignee: Lyondell Chemical Technology LP
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Filing: 1970-04-23
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Granted: 1972-01-25
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Expires: 1990-04-23
Abstract
Abstract THERMOSETTING RESIN COMPOSITIONS OF IMPROVED QUALITIES MADE BY COMBINING A HIGH-TEMPERATURE THERMOPLASTIC RESIN, I.E., A POLYPHENYLENE ETHER POLYMER WITH MIXTURES OF REACTIVE MONOMERS AND REACTIVE-TYPE POLYESTER RESINS, EACH CONTAINING POLYMERIZABLE CARBON-TO-CARBON UNSATURATION. THE POLYPHENYLENE ETHER POLYMERS COMBINE WITH THESE POLYMERIZABLE MATERIALS CONTAINING CARBON-TO-CARBON UNSATURATION IN THE PRESENCE OF A FREE RADICAL CATALYST. THE COMPOSITIONS ARE FORMED BY MODERATE HEAT AND PRESSURE INTO ARTICLES WITH EXCELLENT ELECTRICAL AND MECHANICAL PROPERTIES WHICH ARE RETAINED AT ELEVATED TEMPERATURES, AND UNDER CONDITIONS OF HIGH HUMIDITY.
Inventors
- 👤 Carl L Wright
- 👤 Harry H Beacham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:44
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08J; C08J5/00; C08J5/24; C08J5/241; C08J5/244; C08J5/249; C08L67/00; C08L67/06; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; H01B3/425; H01B3/427; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0326; C08J2367/00; C08J2367/06; H05K1/0353; H05K1/036; H05K1/0366; H05K2201/00; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/3162; Y10T428/31786; Y10T428/3179
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |