US3277050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for curing polyepoxides and resulting products
Assignee: Shell USA Inc
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Filing: 1961-07-17
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Granted: 1966-10-04
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Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Pettigrew Jimmy Don
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:26
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/44; C08G59/444
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS FOR PRODUCING A RESINFIED PRODUCT HAVING IMPROVED RESISTANCE TO WATER WHICH COMPRISES MIXING AND RACTINGT AT A TEMPERATURE BETWEEN 50*C. AND 280*C. A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND OF THE GROUP CONSISTING OF POLYHYDRIC ALCOHOLS AND POLYHYDRIC PHENOLS, WHICH GLYCIDYL ETHER HAS AN EPOXY EQUIVALENCY OF 1.1 AND A MOLECULAR WEIGHT ABOVE ABOUT 200, WITH 12 PARTS TO 33 PARTS OF SULFANILAMIDE IN THE PRESENCE OF FROM 1 PART TO 6 PARTS OF DICYANDIAMIDE, SAID PARTS BEING PER 100 PARTS OF THE GLYCIDYL POLYETHER.
Claim 2
Dependent Claim
87 words
A PROCESS FOR PRODUCING A RESINFIED PRODUCT HAVING IMPROVED RESISTANCE TO WATER WHICH COMPRISES MIXING AND RACTINGT AT A TEMPERATURE BETWEEN 50*C. AND 280*C. A GLYCIDYL POLYETHER OF A POLYHYDRIC COMPOUND OF THE GROUP CONSISTING OF POLYHYDRIC ALCOHOLS AND POLYHYDRIC PHENOLS, WHICH GLYCIDYL ETHER HAS AN EPOXY EQUIVALENCY OF 1.1 AND A MOLECULAR WEIGHT ABOVE ABOUT 200, WITH 12 PARTS TO 33 PARTS OF SULFANILAMIDE IN THE PRESENCE OF FROM 1 PART TO 6 PARTS OF DICYANDIAMIDE, SAID PARTS BEING PER 100 PARTS OF THE GLYCIDYL POLYETHER.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |