US3271339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin stabilizers comprising esters of thiodiethyleneglycol and hydroxyphenyl benzotriazoles
Assignee: Montedison SpA
•
Filing: 1963-02-12
•
Granted: 1966-09-06
•
Expires: 1983-02-12
Abstract
No abstract record available.
Inventors
- 👤 Cappuccio Vittorio
- 👤 Bonvicini Alberto
- 👤 Caldo Cornelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08K5/04; C08K5/13; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; C08L; C08L23/00; C08L23/02; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A STABILIZED POLYMERIC COMPOSITION CONSISTING OF ESSENTIALLY OF A POLY-ALPHA-OLEFIN AND FROM ABOUT 0.02 TO 2.0% BY WEIGHT OF SAID POLY-ALIPHA-OLEFIN OF A STABILIZING MIXING CONSISTING OF ABOUT 20 TO 60% BY WEIGHT OF SAID STABILIZING MIXTURE OF AN ALIPHATIC THIOESTER WHEREIN THE ALIPHATIC RADICAL CONTAINS 8-30 CARBON ATOMS, SAID THIOESTER BEING AN ESTER OF THIODIETHYLENEGLYCOL; AT LEAST 1% BY WEIGHT OF SAID STABILIZING MIXTURE OF A SUBSTITUTED PHENOLIC COMPOUND; AND ABOUT 20 TO 60% BY WEIHT OF SAID STABILIZING MIXTURE OF AN HYDROXYBENZOTIAXOLIC COMPOUND HAVING THE GENRERL FORMULA:
Claim 2
Dependent Claim
89 words
A STABILIZED POLYMERIC COMPOSITION CONSISTING OF ESSENTIALLY OF A POLY-ALPHA-OLEFIN AND FROM ABOUT 0.02 TO 2.0% BY WEIGHT OF SAID POLY-ALIPHA-OLEFIN OF A STABILIZING MIXING CONSISTING OF ABOUT 20 TO 60% BY WEIGHT OF SAID STABILIZING MIXTURE OF AN ALIPHATIC THIOESTER WHEREIN THE ALIPHATIC RADICAL CONTAINS 8-30 CARBON ATOMS, SAID THIOESTER BEING AN ESTER OF THIODIETHYLENEGLYCOL; AT LEAST 1% BY WEIGHT OF SAID STABILIZING MIXTURE OF A SUBSTITUTED PHENOLIC COMPOUND; AND ABOUT 20 TO 60% BY WEIHT OF SAID STABILIZING MIXTURE OF AN HYDROXYBENZOTIAXOLIC COMPOUND HAVING THE GENRERL FORMULA:
Claim 3
Dependent Claim
16 words
THE STABILIZED POLYMERIC COMPOSITION OF CLAIM 1 WHICH FURTHER CONTAINS AT LEAST 0.3% OF CALCIUM STEARATE.
References Cited (Backward Citations)
US3004896A
Cited
US2906733A
Cited
US2956982A
Cited
GB851670A
Cited
US3076782A
Cited
US3072604A
Cited
US3174946A
Cited
US3074909A
Cited
US3074910A
Cited
US3134748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |