US2940953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resins
Assignee: Celanese Coatings Co
•
Filing: 1957-05-02
•
Granted: 1960-06-14
•
Expires: 1977-05-02
Abstract
No abstract record available.
Inventors
- 👤 William J Belanger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:55
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/02; C08G59/04; C08G59/20; C08G59/32; C08G59/3236
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A PROCESS FOR MAKING A RESINOUS MATERIAL WHICH CONTAINS AT LEAST ONE BUT NOT MORE THAN FOUR EPOXY GROUPS PER MOLECULE WHICH CONSISTS OF REACTING BY HEATING CYANURIC ACID WITH A DIEPOXIDE WHICH IS A MEMBER OF THE GROUP CONSISTING OF DIGLYCIDYL ETHERS OF DIHYDRIC PHENOLS AND DIGLYCIDYL ETHERS OF DIHYDRIC ALCOHOLS IN ADMIXTURE WITH A 1,2-MONOEPOXIDE AND AN ORGANIC BASE AS A CATALYST, IN THE RATIO OF X MOLS OF A DIEPOXIDE TO Y MOLS OF A MONOEPOXIDE PER MOL OF CYANURIC ACID WHEREIN X EQUALS AT LEAST ONE BUT NOT MORE THAN TWO, Y EQUALS AT LEAST ONE BUT NOT MORE THAN TWO, AND WHEREIN X+Y EQUALS NOT MORE THAN THREE BUT GREATER THAN TWO, AND WHEREIN THE TOTAL NUMBER OF EPOXY GROUPS EMPLOYED FOR REACTION WITH THE CYANURIC ACID IS GREATER THAN THE NUMBER OF HYDROXYL GROUPS SUPPLIED BY THE CYANURIC ACID.
Claim 2
Dependent Claim
145 words
A PROCESS FOR MAKING A RESINOUS MATERIAL WHICH CONTAINS AT LEAST ONE BUT NOT MORE THAN FOUR EPOXY GROUPS PER MOLECULE WHICH CONSISTS OF REACTING BY HEATING CYANURIC ACID WITH A DIEPOXIDE WHICH IS A MEMBER OF THE GROUP CONSISTING OF DIGLYCIDYL ETHERS OF DIHYDRIC PHENOLS AND DIGLYCIDYL ETHERS OF DIHYDRIC ALCOHOLS IN ADMIXTURE WITH A 1,2-MONOEPOXIDE AND AN ORGANIC BASE AS A CATALYST, IN THE RATIO OF X MOLS OF A DIEPOXIDE TO Y MOLS OF A MONOEPOXIDE PER MOL OF CYANURIC ACID WHEREIN X EQUALS AT LEAST ONE BUT NOT MORE THAN TWO, Y EQUALS AT LEAST ONE BUT NOT MORE THAN TWO, AND WHEREIN X+Y EQUALS NOT MORE THAN THREE BUT GREATER THAN TWO, AND WHEREIN THE TOTAL NUMBER OF EPOXY GROUPS EMPLOYED FOR REACTION WITH THE CYANURIC ACID IS GREATER THAN THE NUMBER OF HYDROXYL GROUPS SUPPLIED BY THE CYANURIC ACID.
References Cited (Backward Citations)
US2741607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |