US2710844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose derivatives stabilized with epoxy condensation products
Assignee: Hercules Powder Co
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Filing: 1951-10-04
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Granted: 1955-06-14
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Expires: 1971-10-04
Abstract
No abstract record available.
Inventors
- 👤 Mortimer S Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:22
CPC Classifications
C; C08; C08B; C08B3/00; C08B3/22; C08B3/30; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN THE COMPOUNDING OF A THERMOPLASTIC MOLDING POWER COMPOSITION CONTAINING A THERMOPLASTIC CELLULOSE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ETHERS AND CELLULOSE ESTERS, AND CONTAINING AT LEAST 8% BY WEIGHT OF TRICLOROETHYL PHOSPATE AS A PLASTICIZER, THE INPROVEMENT WHICH COMPRISES INCREASING THE HEAT STABILITY OF SAID COMPOSITION BY ADDING AT LEAST 10% BY WEIGHT, BASED ON SAID TRICHLOROETHYL PHOSPHATE, OF A RESINOUS EPOXY CONDENSATION PRODUCT OF EPICHLORHYDRIN AND BISPHENOL HAVING A BOILING POINT IN EXCESS OF 350* F. TO SAID COMPOSITION DURING THE COMPOUNDING STEP.
Claim 2
Dependent Claim
87 words
IN THE COMPOUNDING OF A THERMOPLASTIC MOLDING POWER COMPOSITION CONTAINING A THERMOPLASTIC CELLULOSE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ETHERS AND CELLULOSE ESTERS, AND CONTAINING AT LEAST 8% BY WEIGHT OF TRICLOROETHYL PHOSPATE AS A PLASTICIZER, THE INPROVEMENT WHICH COMPRISES INCREASING THE HEAT STABILITY OF SAID COMPOSITION BY ADDING AT LEAST 10% BY WEIGHT, BASED ON SAID TRICHLOROETHYL PHOSPHATE, OF A RESINOUS EPOXY CONDENSATION PRODUCT OF EPICHLORHYDRIN AND BISPHENOL HAVING A BOILING POINT IN EXCESS OF 350* F. TO SAID COMPOSITION DURING THE COMPOUNDING STEP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |