US3143523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized crystalline polymeric olefins
Assignee: Montedison SpA
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Filing: 1960-10-24
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Granted: 1964-08-04
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Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Caldo Cornelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR STABILIZING THE CRYSTALLINE POLYMERIC OLEFINS AGAINST THE ACTION OF HEAT, AGEING AND LIGHT, COMPRISING MIXING A POLYMERIC OLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYBUTENE, FROM ABOUT 0.02 TO 2% BY WEIGHT OF A BETACYANOETHYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIS-(BETACYANOETHYL) ACETOPHENONE, MONOBETACYANOETHYL DODECYLAMINE, DI(BETACYANOETHYL) HYDROQUINONE OBTAINED BY REACTING HYDROQUINONE WITH ACRYLONITRILE IN MOLAR PROPORTIONS OF 1:2 IN THE PRESENCE OF METALLIC SODIUM AT 120130*C., MONOBETACYANOETHYL OCTADECYLAMINE, BIS-9,9-
Claim 2
Dependent Claim
76 words
A PROCESS FOR STABILIZING THE CRYSTALLINE POLYMERIC OLEFINS AGAINST THE ACTION OF HEAT, AGEING AND LIGHT, COMPRISING MIXING A POLYMERIC OLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND POLYBUTENE, FROM ABOUT 0.02 TO 2% BY WEIGHT OF A BETACYANOETHYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIS-(BETACYANOETHYL) ACETOPHENONE, MONOBETACYANOETHYL DODECYLAMINE, DI(BETACYANOETHYL) HYDROQUINONE OBTAINED BY REACTING HYDROQUINONE WITH ACRYLONITRILE IN MOLAR PROPORTIONS OF 1:2 IN THE PRESENCE OF METALLIC SODIUM AT 120130*C., MONOBETACYANOETHYL OCTADECYLAMINE, BIS-9,9-
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |