US2530769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diphenyl amine derivatives
Assignee: Goodrich Corp
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Filing: 1950-01-12
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Granted: 1950-11-21
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Expires: 1970-01-12
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Hollis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A LIQUID OILY COMPOSITE PRODUCT USEFUL AS AN ANTIOXIDANT AND BEING ESSENTIALLY COMPOSED OF A MIXTURE OF (1) P,P''-DI-TERTIARYOCTYL DIPHEYL AMINE, (2) P,P'' - DI - ALPHAPHENETHYL DIPHEYL AMINE, (3) P - TERTIARYOCTYL-P''-ALPHAPHENETHYL DIPHENYL AMINE, (4) P-MON-TERTIARYOCTYL DIPHENYL AMINE AND (5) P-MONO-ALPHAPHENETHYL DIPHENYL AMINE IN THE RATIO OF 50 TO 70% BY WEIGHT OF COMPOUNDS (1), (2) AND (3) TO 30 TO 50% BY WEIGHT OF COMPOUNDS (4) AND (5), SAID PRODUCT RESULTING FROM THE REACTION OF 1.3 TO 2.0 MOLES OF A HYDROCARBON MIXTURE CONTAINING DIISOBUTYLENE AND STYRENE IN THE RATIO OF 2 TO 5 PARTS BY WEIGHT OF DIISOBUTYLENE TO 1 PART BY WEIGHT OF STYRENE, WITH 1 MOLE OF DIPHENYL AMINE.
Claim 2
Dependent Claim
114 words
A LIQUID OILY COMPOSITE PRODUCT USEFUL AS AN ANTIOXIDANT AND BEING ESSENTIALLY COMPOSED OF A MIXTURE OF (1) P,P''-DI-TERTIARYOCTYL DIPHEYL AMINE, (2) P,P'' - DI - ALPHAPHENETHYL DIPHEYL AMINE, (3) P - TERTIARYOCTYL-P''-ALPHAPHENETHYL DIPHENYL AMINE, (4) P-MON-TERTIARYOCTYL DIPHENYL AMINE AND (5) P-MONO-ALPHAPHENETHYL DIPHENYL AMINE IN THE RATIO OF 50 TO 70% BY WEIGHT OF COMPOUNDS (1), (2) AND (3) TO 30 TO 50% BY WEIGHT OF COMPOUNDS (4) AND (5), SAID PRODUCT RESULTING FROM THE REACTION OF 1.3 TO 2.0 MOLES OF A HYDROCARBON MIXTURE CONTAINING DIISOBUTYLENE AND STYRENE IN THE RATIO OF 2 TO 5 PARTS BY WEIGHT OF DIISOBUTYLENE TO 1 PART BY WEIGHT OF STYRENE, WITH 1 MOLE OF DIPHENYL AMINE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |