Patent US2959571A successfully refreshed from Google Patents.
US2959571A
Expired / Lapsed
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Process for the preparation of selfextinguishing epoxide resins
Assignee: Cavity GmbH
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Filing: 1956-06-01
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Granted: 1960-11-08
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Expires: 1976-06-01
Abstract
No abstract record available.
Inventors
- 👤 Faerber Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:42
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/58; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1444; C08G59/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
PROCESS FOR MAKING SELF-EXTINGUISHING EPOXIDE RESINS COMPRISING COMBINING AT A TEMPERATURE OF FROM ABOUT 100* TO ABOUT 120*C. A THERMOPLASTIC RESIN EPOXY CONDENSATE OF DIPHENYLOLPROPANE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF EPICHLORHYDRIN AND DICHLORHYDRIN WITH A CHLORINE CONTAINING MODIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF PENTACHLOROPHENOL AND A CONDENSATION PRODUCT OF EQUIMOLECULAR QUANTITIES OF PENTACHLOROPHENOL AND EPICHLORHYDRIN, SAID MODIFYING AGENT AND SAID THERMOPLASTIC RESIN EPOXY CONDENSATE BEING IN SUCH PROPORTIONS, THAT FROM 8 TO 16 PARTS OF WEIGHT PENTACHLOROPHENOL ARE COMBINED WITH 10 PARTS OF THERMOPLASTIC RESIN EPOXY CONDENSATE, AND CONVERTING THE MODIFIED THERMOPLASTIC CONDENSATE TO A THERMOSET, INSOLUBLE CONDITION WITH 10-50% OF A CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF M-PHENYLENE DIAMINE, PHTHALIC ANHYDRIDE AND HEXAMETHYLENE DIISOCYANATE BASED ON THE WEIGHT OF THE THERMOPLASTIC RESIN EPOXY CONDENSATE BEFORE BEING MODIFIED.
Claim 2
Dependent Claim
136 words
PROCESS FOR MAKING SELF-EXTINGUISHING EPOXIDE RESINS COMPRISING COMBINING AT A TEMPERATURE OF FROM ABOUT 100* TO ABOUT 120*C. A THERMOPLASTIC RESIN EPOXY CONDENSATE OF DIPHENYLOLPROPANE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF EPICHLORHYDRIN AND DICHLORHYDRIN WITH A CHLORINE CONTAINING MODIFYING AGENT SELECTED FROM THE GROUP CONSISTING OF PENTACHLOROPHENOL AND A CONDENSATION PRODUCT OF EQUIMOLECULAR QUANTITIES OF PENTACHLOROPHENOL AND EPICHLORHYDRIN, SAID MODIFYING AGENT AND SAID THERMOPLASTIC RESIN EPOXY CONDENSATE BEING IN SUCH PROPORTIONS, THAT FROM 8 TO 16 PARTS OF WEIGHT PENTACHLOROPHENOL ARE COMBINED WITH 10 PARTS OF THERMOPLASTIC RESIN EPOXY CONDENSATE, AND CONVERTING THE MODIFIED THERMOPLASTIC CONDENSATE TO A THERMOSET, INSOLUBLE CONDITION WITH 10-50% OF A CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF M-PHENYLENE DIAMINE, PHTHALIC ANHYDRIDE AND HEXAMETHYLENE DIISOCYANATE BASED ON THE WEIGHT OF THE THERMOPLASTIC RESIN EPOXY CONDENSATE BEFORE BEING MODIFIED.
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) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |