US3231541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefins stabilized with a combination of a dialkyl thiodipropionate and a cyano-ethyl compound
Assignee: Montedison SpA
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Filing: 1961-11-07
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Granted: 1966-01-25
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Expires: 1981-11-07
Abstract
No abstract record available.
Inventors
- 👤 Caldo Cornelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:00
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/315; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A POLYMERIC COMPOSITION THAT IS STABLE AGAINST THE ACTION OF HEAT, AGING AND LIGHT, THIS COMPOSITION COMPRISING POLYPROPLYENE AND FROM ABOUT 0.2 TO 2%, BASED ON THE POLYPROPYLENE, OF A STABILIZING MIXTURE OF A CYANOETHYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1,4-DICYANOETHOXY BENZENE AND OCTADECYLCYANO ETHYLAMINE, AND A B-THIOETHER OF AN ALKYL DIESTER OF PROPIONIC ACID.
Claim 2
Dependent Claim
57 words
A POLYMERIC COMPOSITION THAT IS STABLE AGAINST THE ACTION OF HEAT, AGING AND LIGHT, THIS COMPOSITION COMPRISING POLYPROPLYENE AND FROM ABOUT 0.2 TO 2%, BASED ON THE POLYPROPYLENE, OF A STABILIZING MIXTURE OF A CYANOETHYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1,4-DICYANOETHOXY BENZENE AND OCTADECYLCYANO ETHYLAMINE, AND A B-THIOETHER OF AN ALKYL DIESTER OF PROPIONIC ACID.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |