US2928795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding composition comprising ethyl cellulose, epoxy compound and phenolic compound and process of preparing
Assignee: Hercules Powder Co
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Filing: 1957-01-16
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Granted: 1960-03-15
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Expires: 1977-01-16
Abstract
No abstract record available.
Inventors
- 👤 John S Tinsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:45
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
IN A PROCESS OF IMPROVING THE VISCOSITY AND COLOR STABILITY OF AN ORGANO-SOLUBLE CELLULOSE ETHER MOLDING COMPOSITION, THE IMPROVEMENT WHICH COMPRISES, INCORPORATING IN SAID COMPOSITION A PHENOLIC COMPOUND AND AN EPOXY COMPOUND AS STABILIZER FOR SAID CELLULOSE ETHER, THE AMOUNT OF PHENOLIC STABILIZER BEING 0.5% TO 3% AND 0.05% TO 1% RESPECTIVELY BY WEIGHT BASED ON SAID CELLULOSE ETHER, THE PHENOLIC STABILIZER BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL PHENOLS, P-CYCLOHEXYLPHENOL, MENTHLYPHENOL, METHYLENE BIS(TERT-BUTY-PCRESOL), METHLYENE BIS-P-CRESOL, AND DI(HYDROXY METHYL PHENOL) METHYL P-CRESOL, AND THE EPOXY STABILIZER BEING SELECTED FROM THE GROUP CONSISTING OF EPOXIDIZED FATTY OILS, POLYGLYICIDOL AND GLYCIDYL ETHERS OF BISPHENOL.
Claim 2
Dependent Claim
103 words
IN A PROCESS OF IMPROVING THE VISCOSITY AND COLOR STABILITY OF AN ORGANO-SOLUBLE CELLULOSE ETHER MOLDING COMPOSITION, THE IMPROVEMENT WHICH COMPRISES, INCORPORATING IN SAID COMPOSITION A PHENOLIC COMPOUND AND AN EPOXY COMPOUND AS STABILIZER FOR SAID CELLULOSE ETHER, THE AMOUNT OF PHENOLIC STABILIZER BEING 0.5% TO 3% AND 0.05% TO 1% RESPECTIVELY BY WEIGHT BASED ON SAID CELLULOSE ETHER, THE PHENOLIC STABILIZER BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL PHENOLS, P-CYCLOHEXYLPHENOL, MENTHLYPHENOL, METHYLENE BIS(TERT-BUTY-PCRESOL), METHLYENE BIS-P-CRESOL, AND DI(HYDROXY METHYL PHENOL) METHYL P-CRESOL, AND THE EPOXY STABILIZER BEING SELECTED FROM THE GROUP CONSISTING OF EPOXIDIZED FATTY OILS, POLYGLYICIDOL AND GLYCIDYL ETHERS OF BISPHENOL.
References Cited (Backward Citations)
US2746958A
Cited
US2710844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |