US2615008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resin compositions
Assignee: Celanese Coatings Co
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Filing: 1951-10-11
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Granted: 1952-10-21
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Expires: 1971-10-11
Abstract
No abstract record available.
Inventors
- 👤 Greenlee Sylvan Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/50; B29C70/502; B29C67/00; B29C67/24; B29C67/248; B29C67/249; C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G59/18; C08G59/40; C08G59/62; C08G59/621; B29K; B29K2061/00; B29K2061/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
COMPOSITIONS CAPABLE ON HEATING OF FORMING HIGH MOLECULAR WEIGHT EPOXIDE RESINS, SAID COMPOSITIONS CONSISTING ESSENTIALLY OF A DIHYDRIC PHENOL FREE FROM REACTIVE GROUPS OTHER THAN PHENOLIC HYDROXYL GROUPS, AND A LOW MELTING POINT EPOXIDE RESIN RESULTING FROM THE REACTION WITH HEATING OF A MIXTURE OF APPROXIMATELY 1 MOL OF DIHYDRIC PHENOL FREE FROM REACTIVE GROUPS OTHER THAN PHENOLIC HYDROXYL GROUPS WITH FROM ABOUT 1.2 TO ABOUT 2 MOLS OF A CHLORHYDRIN SELECTED FROM THE GROUP WHICH CONSISTS OF EPICHLORHYDRIN AND GLYCEROL DICHLORHYDRIN AND SUFFICIENT CAUSTIC ALKALI TO COMBINE WITH THE CHLORINE OF THE CHLORHYDRIN, SAID LOW MELTING POINT RESINS BEING POLYETHERS OF THE DIHYDRIC PHENOLS WITH THE TERMINAL GROUPS OF THE POLYETHERS INCLUDING TERMINAL EPOXIDE GROUPS, SAID POLYEHTERS BEING FREE FROM FUNCTIONAL GROUPS OTHER THAN ALCOHOLIC HYDROXYL AND EPOXIDE GROUPS, THE PROPORTION OF DIHYDRIC PHENOL TO EPOXIDE RESIN BEING LESS THAN THAT CORRESPONDING TO THE EPOXIDE EQUIVALENT OF THE RESIN, WHEREBY ON HEATING THE COMPOSITION A HIGHER MOLECULAR WEIGHT AND A HIGHER MELTING POINT EPOXIDE RESIN IS FORMED.
Claim 2
Dependent Claim
168 words
COMPOSITIONS CAPABLE ON HEATING OF FORMING HIGH MOLECULAR WEIGHT EPOXIDE RESINS, SAID COMPOSITIONS CONSISTING ESSENTIALLY OF A DIHYDRIC PHENOL FREE FROM REACTIVE GROUPS OTHER THAN PHENOLIC HYDROXYL GROUPS, AND A LOW MELTING POINT EPOXIDE RESIN RESULTING FROM THE REACTION WITH HEATING OF A MIXTURE OF APPROXIMATELY 1 MOL OF DIHYDRIC PHENOL FREE FROM REACTIVE GROUPS OTHER THAN PHENOLIC HYDROXYL GROUPS WITH FROM ABOUT 1.2 TO ABOUT 2 MOLS OF A CHLORHYDRIN SELECTED FROM THE GROUP WHICH CONSISTS OF EPICHLORHYDRIN AND GLYCEROL DICHLORHYDRIN AND SUFFICIENT CAUSTIC ALKALI TO COMBINE WITH THE CHLORINE OF THE CHLORHYDRIN, SAID LOW MELTING POINT RESINS BEING POLYETHERS OF THE DIHYDRIC PHENOLS WITH THE TERMINAL GROUPS OF THE POLYETHERS INCLUDING TERMINAL EPOXIDE GROUPS, SAID POLYEHTERS BEING FREE FROM FUNCTIONAL GROUPS OTHER THAN ALCOHOLIC HYDROXYL AND EPOXIDE GROUPS, THE PROPORTION OF DIHYDRIC PHENOL TO EPOXIDE RESIN BEING LESS THAN THAT CORRESPONDING TO THE EPOXIDE EQUIVALENT OF THE RESIN, WHEREBY ON HEATING THE COMPOSITION A HIGHER MOLECULAR WEIGHT AND A HIGHER MELTING POINT EPOXIDE RESIN IS FORMED.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |