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US2965508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble thermoplastic cellulose ether compositions
Assignee: Dow Chemical Co
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Filing: 1958-05-13
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Granted: 1960-12-20
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Expires: 1978-05-13
Abstract
No abstract record available.
Inventors
- 👤 Francis E Windover
- 👤 Garth H Beaver
- 👤 Arthur W Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A THERMOPLASTIC COMPOSITION CONSISTING ESSENTIALLY OF (A) FROM 2 TO 90 PERCENT BY WEIGHT OF A WATER-SOLUBLE THERMOPLASTIC HYDROXYALKYL ALKYL CELLULOSE ETHER IN WHICH THE HYDROXYALKYL GROUP CONTAINS FROM 2 TO 3 CARBON ATOMS AND THE ALKYL GROUP CONTAINS FROM 1 TO 3 CARBON ATOMS AND WHICH HAS A MELTING POINT WHICH IS AT LEAST 10*C. BELOW THE DECOMPOSITION TEMPERTURE, AND (B) CORRESPONDINGLY FROM 98 TO 10 PERCENT BY WEIGHT OF A PLASTICIZER CONSISTING OF (1) AT LEAST 5 PERCENT BY WEIGHT OF 2 OF MEMBER OF THE GROUP CONSISTING OF GLYCEROL MONO-2-HYDROXYALKYL ETHER, GLYCEROL-BIS-(2-HYDROXYALKYL) ETHER, AND GLYCEROLTRIS-(2-HYDROXYALKYL) ETHER WHEREIN EACH 2-HYDROXYALKYL GROUP CONTAINS FROM 2 TO 3 CARBON ATOMS AND (2) AT LEAST 5 PERCENT BY WEIGHT OF ANOTHER KNOWN CELLULOSE ETHER PLASTICIZER.
Claim 2
Dependent Claim
124 words
A THERMOPLASTIC COMPOSITION CONSISTING ESSENTIALLY OF (A) FROM 2 TO 90 PERCENT BY WEIGHT OF A WATER-SOLUBLE THERMOPLASTIC HYDROXYALKYL ALKYL CELLULOSE ETHER IN WHICH THE HYDROXYALKYL GROUP CONTAINS FROM 2 TO 3 CARBON ATOMS AND THE ALKYL GROUP CONTAINS FROM 1 TO 3 CARBON ATOMS AND WHICH HAS A MELTING POINT WHICH IS AT LEAST 10*C. BELOW THE DECOMPOSITION TEMPERTURE, AND (B) CORRESPONDINGLY FROM 98 TO 10 PERCENT BY WEIGHT OF A PLASTICIZER CONSISTING OF (1) AT LEAST 5 PERCENT BY WEIGHT OF 2 OF MEMBER OF THE GROUP CONSISTING OF GLYCEROL MONO-2-HYDROXYALKYL ETHER, GLYCEROL-BIS-(2-HYDROXYALKYL) ETHER, AND GLYCEROLTRIS-(2-HYDROXYALKYL) ETHER WHEREIN EACH 2-HYDROXYALKYL GROUP CONTAINS FROM 2 TO 3 CARBON ATOMS AND (2) AT LEAST 5 PERCENT BY WEIGHT OF ANOTHER KNOWN CELLULOSE ETHER PLASTICIZER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |