US2947726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resins
Assignee: Celanese Coatings Co
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Filing: 1957-05-02
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Granted: 1960-08-02
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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
2026-10-23 10:39
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/14; C08G59/1433; C08G59/1438
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
THE METHOD OF PRODUCING HIGH MOLECULAR WEIGHT, SOLUBLE, FUSIBLE EPOXIDE RESINS WHICH COMPRISES HEATING TO A REACTION TEMPERATURE CYANURIC ACID WITH A SUFFICIENT EXCESS OF DIEPOXIDE SELECTED FROM THE MEMBER OF THE GROUP CONSISTING OF DIGLYCIDYL ETHERS OF DIHYDRIC PHENOLS AND DIGLYCIDYL ETHERS OF DIHYDRIC ALCOHOLS TO REACT WITH ALL OF THE ACID GROUPS OF THE CYANURIC ACID TO GIVE A POLYEPOXIDE REACTION PRODUCT CONTAINING AT LEAST THREE EPOXIDE GROUPS, ADDING TO THE REACTION MIXTURE A MONOFUNCTIONAL REACTANT SELECTED FROM A MEMBLER OF THE GROUP CONSISTING OF A MONOHYDRIC PHENOL, A MONOCARBOXYLIC ACID AND A MONOHYDRIC ALCOHOL IN LIMITED AMOUNT AND REACTING THE POLYEPOXIDE WITH THE MONOFUNCTIONAL REACTANT TO GIVE A SOLUBLE, FUSIBLE EPOXIDE RESIN OF LOWER EPOXIDE CONTENT, SAID REACTION BEING CARRIED OUT IN ADMIXTURE WITH AN ORGANIC BASE AS A CATALYST.
Claim 2
Independent Claim
133 words
THE METHOD OF PRODUCING HIGH MOLECULAR WEIGHT, SOLUBLE, FUSIBLE EPOXIDE RESINS WHICH COMPRISES HEATING TO A REACTION TEMPERATURE CYANURIC ACID WITH A SUFFICIENT EXCESS OF DIEPOXIDE SELECTED FROM THE MEMBER OF THE GROUP CONSISTING OF DIGLYCIDYL ETHERS OF DIHYDRIC PHENOLS AND DIGLYCIDYL ETHERS OF DIHYDRIC ALCOHOLS TO REACT WITH ALL OF THE ACID GROUPS OF THE CYANURIC ACID TO GIVE A POLYEPOXIDE REACTION PRODUCT CONTAINING AT LEAST THREE EPOXIDE GROUPS, ADDING TO THE REACTION MIXTURE A MONOFUNCTIONAL REACTANT SELECTED FROM A MEMBLER OF THE GROUP CONSISTING OF A MONOHYDRIC PHENOL, A MONOCARBOXYLIC ACID AND A MONOHYDRIC ALCOHOL IN LIMITED AMOUNT AND REACTING THE POLYEPOXIDE WITH THE MONOFUNCTIONAL REACTANT TO GIVE A SOLUBLE, FUSIBLE EPOXIDE RESIN OF LOWER EPOXIDE CONTENT, SAID REACTION BEING CARRIED OUT IN ADMIXTURE WITH AN ORGANIC BASE AS A CATALYST.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |