US2642412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing glycidyl polyethers with nu, nu-dialkyl-1, 3-propanediamines
Assignee: Shell Development Co
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Filing: 1951-08-07
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Granted: 1953-06-16
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Expires: 1971-08-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Newey
- 👤 Edward C Shokal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:31
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR PRODUCING A RESINOUS PRODUCT WHICH COMPRISES COMMINGLING AN N,N-DIALKYL1,3-PROPANEDIAMINE WHEREIN THE ALKYL GROUPS CONTAIN 1 TO 2 CARBON ATOMS WITH GLYCIDYL POLYETHER OF A MEMBER OF THE GROUP CONSISTING OF A POLYHYDRIC PHENOL AND A POLYHYDRIC ALCOHOL, SAID POLYETHER HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1.0, AMOUNT OF 0.05 TO 1 MOL OF THE AMINE PER EPOXIDE EQUIVALENT WEIGHT OF THE POLYETHER, AND CURING THE MIXTURE AT ABOUT 20* C. TO 250* C. TO A HARD RESINOUS PRODUCT.
Claim 2
Dependent Claim
81 words
A PROCESS FOR PRODUCING A RESINOUS PRODUCT WHICH COMPRISES COMMINGLING AN N,N-DIALKYL1,3-PROPANEDIAMINE WHEREIN THE ALKYL GROUPS CONTAIN 1 TO 2 CARBON ATOMS WITH GLYCIDYL POLYETHER OF A MEMBER OF THE GROUP CONSISTING OF A POLYHYDRIC PHENOL AND A POLYHYDRIC ALCOHOL, SAID POLYETHER HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1.0, AMOUNT OF 0.05 TO 1 MOL OF THE AMINE PER EPOXIDE EQUIVALENT WEIGHT OF THE POLYETHER, AND CURING THE MIXTURE AT ABOUT 20* C. TO 250* C. TO A HARD RESINOUS PRODUCT.
References Cited (Backward Citations)
US251647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |