US2836577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polymeric compositions
Assignee: Ethyl Corp
•
Filing: 1955-09-23
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Granted: 1958-05-27
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Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Kolka
- 👤 George G Ecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:18
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A SOLID HYDROCARBON POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 10,000 AND BEING NORMALLY SUSCEPTIBLE OF OXIDATIVE DETERIORATION CONTAINING, IN AMOUNT SUFFICIENT TO INHIBIT SUCH DETERIORATION, A SMALL ANTIOXIBANT QUANTITY OF A 2,6-DIALKYL PHENOL IN WHICH THE POSITION PARA TO THE HYDROXY GROUP IS UNSUBSTITUTED, THERE IS A TOTAL OF FROM 5 TO 12 CARBON ATOMS IN THE ALKYL GROUPS, AND AT LEAST ONE OF SAID ALKYL GROUPS IS BRANCHED ON THE ALPHA CARBON ATOMS.
Claim 2
Dependent Claim
77 words
A SOLID HYDROCARBON POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 10,000 AND BEING NORMALLY SUSCEPTIBLE OF OXIDATIVE DETERIORATION CONTAINING, IN AMOUNT SUFFICIENT TO INHIBIT SUCH DETERIORATION, A SMALL ANTIOXIBANT QUANTITY OF A 2,6-DIALKYL PHENOL IN WHICH THE POSITION PARA TO THE HYDROXY GROUP IS UNSUBSTITUTED, THERE IS A TOTAL OF FROM 5 TO 12 CARBON ATOMS IN THE ALKYL GROUPS, AND AT LEAST ONE OF SAID ALKYL GROUPS IS BRANCHED ON THE ALPHA CARBON ATOMS.
References Cited (Backward Citations)
US2459597A
Cited
US2730436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |