Patent US1632106A successfully refreshed from Google Patents.
US2768992A
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Hardenable, fluid compositions containing resinous polymeric epoxides and a bentonite-amine reaction product
Assignee: Westinghouse Electric Corp
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Filing: 1954-09-28
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Granted: 1956-10-30
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Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 Florian J Zukas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:53
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/68; C08G59/686; C08L; C08L27/00; C08L27/02; C08L63/00; C08L67/00; C08L67/06; H; H01; H01F; H01F27/00; H01F27/02; H01F27/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A HARDENABLE, FLUID COMPOSITION COMPRISING A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY BETWEEN 1 AND 2 AND WHICH IS DEVOID OF OTHER REACTIVE SUBSTITUENTS THAN PHENOLIC HYDROXYL GROUPS, A CATALYST WHICH IS INSOLUBLE IN SAID GLYCIDYL POLYETHER, SAID CATALYST BEING PRESENT IN AN AMOUNT WITHIN THE RANGE OF 6% TO 50% BY WEIGHT FOR EACH 100 PARTS BY WEIGHT OF SAID GLYCIDYL POLYETHER, AND A BENTONITE-AMINE REACTION PRODUCT IN AN AMOUNT SUFFICIENT TOMAINTAIN THE CATALYST IN SUSPENSION IN SAID GLYCIDYL POLYETHER WHEREBY THE GLYCIDYL POLYETHER MAY BE CONVERTED COMPLETELY TO A SOLID HOMOGENEOUS STATE WITHOUT UNDERGOING SUBSTANTIAL VOLUME SHRINKAGE, SAID BENTONITE-AMINE REACTION PRODUCT BEING PRESENT IN AN AMOUNT WITHIN THE RANGE OF FROM 0.1% TO 15% BY WEIGHT FOR EACH 100 PARTS BY WEIGHT OF THE GLYCIDYL POLYETHER.
Claim 2
Dependent Claim
132 words
A HARDENABLE, FLUID COMPOSITION COMPRISING A GLYCIDYL POLYETHER OF A POLYHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY BETWEEN 1 AND 2 AND WHICH IS DEVOID OF OTHER REACTIVE SUBSTITUENTS THAN PHENOLIC HYDROXYL GROUPS, A CATALYST WHICH IS INSOLUBLE IN SAID GLYCIDYL POLYETHER, SAID CATALYST BEING PRESENT IN AN AMOUNT WITHIN THE RANGE OF 6% TO 50% BY WEIGHT FOR EACH 100 PARTS BY WEIGHT OF SAID GLYCIDYL POLYETHER, AND A BENTONITE-AMINE REACTION PRODUCT IN AN AMOUNT SUFFICIENT TOMAINTAIN THE CATALYST IN SUSPENSION IN SAID GLYCIDYL POLYETHER WHEREBY THE GLYCIDYL POLYETHER MAY BE CONVERTED COMPLETELY TO A SOLID HOMOGENEOUS STATE WITHOUT UNDERGOING SUBSTANTIAL VOLUME SHRINKAGE, SAID BENTONITE-AMINE REACTION PRODUCT BEING PRESENT IN AN AMOUNT WITHIN THE RANGE OF FROM 0.1% TO 15% BY WEIGHT FOR EACH 100 PARTS BY WEIGHT OF THE GLYCIDYL POLYETHER.
References Cited (Backward Citations)
US2531427A
Cited
US2500600A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |