US3146272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antioxidants for glycol derivatives
Assignee: Dow Chemical Co
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Filing: 1959-04-02
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Granted: 1964-08-25
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Expires: 1979-04-02
Abstract
No abstract record available.
Inventors
- 👤 William G Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:26
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/34; C07C41/46; C09; C09K; C09K15/00; C09K15/04; C09K15/06; C10; C10M; C10M3/00; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2209/108; C10M2209/109; C10M2213/00; C10M2213/04; C10M2213/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/10; C10M2219/104; C10M2219/108; C10M2221/00; C10M2221/04; C10N; C10N2040/00; C10N2040/08; C10N2040/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A COMPOSITION COMPRISING A MIXTURE OF A MAJOR PROPORTION OF A FIRST POLYOXYALKYLENE COMPOUND WHEREIN THE ALKYLENE RADICALS EACH CONTAIN 2 TO 4 CARBON ATOMS, SAID COMPOUND BEING SUSCEPTIBLE TO OXIDATIVE DETERIORATION AND, AS AN OXIDATION INHIBITOR THEREFOR, A MINOR BUT EFFECTIVE PROPORTION OF ABOUT 1 TO 50 PERCENT BY WEIGHT OF A SECOND POLYOXYALKYLENE COMPOUND HAVING THE FORMULA R(CNH2NO)XR'', WHEREIN R IS A MONOVALENT RADICAL DERIVED FROM A COMPOUND, RH, HAVING THE PROPERTY OF BEING EFFECTIVE AS AN ANTIOXIDANT FOR SAID FIRST POLYOXYALKYLENE COMPOUND AND REACTIVE WITH A LOWER ALKYLENE OXIDE, N IS AN INTEGER FROM 2 TO 4, X IS AN INTEGER FROM 1 TO ABOUT 100 AND R'' IS A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL AND ACYL RADICALS, SAID COMPOUND, RH, BEING SELECTED FROM THE GROUP CONSISTING OF PHENOLS, PHENOTHIAZINE, PHENOTHIAZINE-5-OXIDE, ALKYL-AND HALOGEN-SUBSTITUTED PHENOLTHIAZINE AND THE CORRESPONDING 5-OXIDES, ARYLSULFONAMIDES AND ARYLAMINES.
Claim 2
Dependent Claim
149 words
A COMPOSITION COMPRISING A MIXTURE OF A MAJOR PROPORTION OF A FIRST POLYOXYALKYLENE COMPOUND WHEREIN THE ALKYLENE RADICALS EACH CONTAIN 2 TO 4 CARBON ATOMS, SAID COMPOUND BEING SUSCEPTIBLE TO OXIDATIVE DETERIORATION AND, AS AN OXIDATION INHIBITOR THEREFOR, A MINOR BUT EFFECTIVE PROPORTION OF ABOUT 1 TO 50 PERCENT BY WEIGHT OF A SECOND POLYOXYALKYLENE COMPOUND HAVING THE FORMULA R(CNH2NO)XR'', WHEREIN R IS A MONOVALENT RADICAL DERIVED FROM A COMPOUND, RH, HAVING THE PROPERTY OF BEING EFFECTIVE AS AN ANTIOXIDANT FOR SAID FIRST POLYOXYALKYLENE COMPOUND AND REACTIVE WITH A LOWER ALKYLENE OXIDE, N IS AN INTEGER FROM 2 TO 4, X IS AN INTEGER FROM 1 TO ABOUT 100 AND R'' IS A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL AND ACYL RADICALS, SAID COMPOUND, RH, BEING SELECTED FROM THE GROUP CONSISTING OF PHENOLS, PHENOTHIAZINE, PHENOTHIAZINE-5-OXIDE, ALKYL-AND HALOGEN-SUBSTITUTED PHENOLTHIAZINE AND THE CORRESPONDING 5-OXIDES, ARYLSULFONAMIDES AND ARYLAMINES.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |