US2789108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination of 2, 4, 6-trialkylphenols and mono-ethers of dihydric phenols as rubber antioxidants
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-02-24
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Granted: 1957-04-16
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Expires: 1973-02-24
Abstract
No abstract record available.
Inventors
- 👤 Mills Gordon Stansfield
- 👤 Henry W H Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:11
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06; C08K5/13; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A SULFUR-VULCANIZABLE RUBBER CONTAINING AN ANTIOXIDANT COMPRISING A MIXTURE OF (A) A 2:4:6-TRIALKYLPHENOL SELECTED FROM THE GROUP CONSISTING OF 2:4-DIMETHYL6-OCTYL-PHENOL, 2:6-DIMETHYL-4-OCTYL-PHENOL AND 2:6-DIBUTYL-4-METHYL-PHENOL AND (B) A MONO-ETHER OF A DIHYDRIC PHENOL WHEREIN SAID ETHER IS SELECTED FROM THE GROUP CON SISTING OF BENZYL AND ETHYL, AND WHEREIN THE RATIO OF (A) TO (B) IS FROM 25:75 TO 75:25 BY WEIGHT.
Claim 2
Dependent Claim
60 words
A SULFUR-VULCANIZABLE RUBBER CONTAINING AN ANTIOXIDANT COMPRISING A MIXTURE OF (A) A 2:4:6-TRIALKYLPHENOL SELECTED FROM THE GROUP CONSISTING OF 2:4-DIMETHYL6-OCTYL-PHENOL, 2:6-DIMETHYL-4-OCTYL-PHENOL AND 2:6-DIBUTYL-4-METHYL-PHENOL AND (B) A MONO-ETHER OF A DIHYDRIC PHENOL WHEREIN SAID ETHER IS SELECTED FROM THE GROUP CON SISTING OF BENZYL AND ETHYL, AND WHEREIN THE RATIO OF (A) TO (B) IS FROM 25:75 TO 75:25 BY WEIGHT.
References Cited (Backward Citations)
US2133297A
Cited
US2581906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-15 | 1960-10-15 | 1961-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-15 | 1964-10-15 | 1965-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-15 | 1968-10-15 | 1969-04-16 | $7700.00 | Window Closed / Lapsed |