US2976260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-alpha-olefins containing certain 4-alkoxy-2-hydroxybenzophenones and alkylene-bis-phenols
Assignee: Eastman Kodak Co
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Filing: 1958-11-28
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Granted: 1961-03-21
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Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Newland
- 👤 John W Tamblyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A SOLID POLY-A-OLEFIN COMPOSITION COMPRISING A SOLID POLY-A-OLEFIN PREPARED FROM AN A-MONOOLEFINIC ALIPHATIC HYDROCARBON HAVING 2 TO 6 CARBON ATOMS CONTAINING .001% TO 10% BY WEIGHT BASED ON SAID POLY-A-OLEFIN OF A STABILIZER COMBINATION COMPRISING AN ALKYLENE-BIS PHENOL SELECTED FROMS THE GROUP CONSISTING OF 2,2''-METHYLENEBIS (4-METHYL-6(1-METHYLCYCLOHEXYL)PHENOL) AND 4,4''ETHYLENEDIOXYBIS(2-TERT.BUTYL PHENOL), AND A 4-ALKOXY-2HYDROXYBENZOPHENONE HAVING AN ALKOXY GROUP OF THE FORMULA -OR WHEREIN THE R IS AN ALKYL RADICAL HAVING 12 TO 14 CARBON ATOMS, THE WEIGHT RATIO OF SAID ALKYLENEBIS-PHENOL TO SAID 4-ALKOXY-2-HYDROXYBENZOPHENONE BEING IN THE RANGE OF 1/30 TO 30/1.
Claim 2
Dependent Claim
90 words
A SOLID POLY-A-OLEFIN COMPOSITION COMPRISING A SOLID POLY-A-OLEFIN PREPARED FROM AN A-MONOOLEFINIC ALIPHATIC HYDROCARBON HAVING 2 TO 6 CARBON ATOMS CONTAINING .001% TO 10% BY WEIGHT BASED ON SAID POLY-A-OLEFIN OF A STABILIZER COMBINATION COMPRISING AN ALKYLENE-BIS PHENOL SELECTED FROMS THE GROUP CONSISTING OF 2,2''-METHYLENEBIS (4-METHYL-6(1-METHYLCYCLOHEXYL)PHENOL) AND 4,4''ETHYLENEDIOXYBIS(2-TERT.BUTYL PHENOL), AND A 4-ALKOXY-2HYDROXYBENZOPHENONE HAVING AN ALKOXY GROUP OF THE FORMULA -OR WHEREIN THE R IS AN ALKYL RADICAL HAVING 12 TO 14 CARBON ATOMS, THE WEIGHT RATIO OF SAID ALKYLENEBIS-PHENOL TO SAID 4-ALKOXY-2-HYDROXYBENZOPHENONE BEING IN THE RANGE OF 1/30 TO 30/1.
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) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |