Patent US2500600A successfully refreshed from Google Patents.
US2500600A
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Compositions of matter containing epoxy ethers and diamines
Assignee: Shell Development Co
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Filing: 1948-02-28
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Granted: 1950-03-14
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Expires: 1968-02-28
Abstract
No abstract record available.
Inventors
- 👤 Theodore F Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:54
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5006; E; E21; E21D; E21D20/00; E21D20/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A COMPOSITION OF MATTER COMPRISING AN EPOXY ETHER HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN ONE WHICH IS DEVOID OF OTHER REACTIVE SUBSTITUENTS THAN ALCOHOLIC HYDROXYL GROUPS, AND 5% TO 300% OF THE EQUIVALENT AMOUNT OF A SATURATED ALIPHATIC DIAMINE OF THE FORMULA CNH2N(NH2)2 WHEREIN N IS AN INTEGER OF AT LEAST 4 CONTAINING TWO PRIMARY AMINO GROUP, ONE OF WHICH IS DIRECTLY LINKED TO A TERTIARY CARBON ATOM.
Claim 2
Dependent Claim
68 words
A COMPOSITION OF MATTER COMPRISING AN EPOXY ETHER HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN ONE WHICH IS DEVOID OF OTHER REACTIVE SUBSTITUENTS THAN ALCOHOLIC HYDROXYL GROUPS, AND 5% TO 300% OF THE EQUIVALENT AMOUNT OF A SATURATED ALIPHATIC DIAMINE OF THE FORMULA CNH2N(NH2)2 WHEREIN N IS AN INTEGER OF AT LEAST 4 CONTAINING TWO PRIMARY AMINO GROUP, ONE OF WHICH IS DIRECTLY LINKED TO A TERTIARY CARBON ATOM.
References Cited (Backward Citations)
US2136928A
Cited
US2444333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |