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Patent US3029224A successfully refreshed from Google Patents.
US3029224A
Expired / Lapsed
US
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Process for stabilizing polyolefins
Assignee: Hoechst AG
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Filing: 1958-08-05
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Granted: 1962-04-10
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Expires: 1978-08-05
Abstract
No abstract record available.
Inventors
- 👤 Fischer Arnold
- 👤 Lenz Hans-Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:08
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN THE PROCESS OF STABILIZING A POLYMER OF AN OLEFIN HAVING 2-3 CARBON ATOMS AGAINST THERMOOXIDATIVE DECOMPOSITION, THE STEP WHICH COMPRISES ADDING TO SAID POLYMER A TWO-COMPONENT STABILIZATION SYSTEM COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC SULFIDE, ANITOMY TRISULFIDE, CADMIUM SULFIDE, CADMIUM SELENIDE, CADMIUM SULFIDE SELENIDE AND STANNIC DISULFIDE AND AN ORGANIC STABILIZER SELECTED FROM THE GROUP CONSISTING OF N-STEAROYL-P-AMINOPHENOL, 4,4''-THIO-BIS-(6-TERT-BUTYL)M-CRESOL) AND A CONDENSATION PRODUCT PREPARED FROM MONYL-PHENOL AND ACETONE.
Claim 2
Dependent Claim
73 words
IN THE PROCESS OF STABILIZING A POLYMER OF AN OLEFIN HAVING 2-3 CARBON ATOMS AGAINST THERMOOXIDATIVE DECOMPOSITION, THE STEP WHICH COMPRISES ADDING TO SAID POLYMER A TWO-COMPONENT STABILIZATION SYSTEM COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC SULFIDE, ANITOMY TRISULFIDE, CADMIUM SULFIDE, CADMIUM SELENIDE, CADMIUM SULFIDE SELENIDE AND STANNIC DISULFIDE AND AN ORGANIC STABILIZER SELECTED FROM THE GROUP CONSISTING OF N-STEAROYL-P-AMINOPHENOL, 4,4''-THIO-BIS-(6-TERT-BUTYL)M-CRESOL) AND A CONDENSATION PRODUCT PREPARED FROM MONYL-PHENOL AND ACETONE.
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) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |