US3149181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene stabilized with an astage para-tertiary alkylphenolformaldehyde resin and a phosphorous containing compound
Assignee: Union Carbide Corp
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Filing: 1960-04-28
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Granted: 1964-09-15
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Expires: 1980-04-28
Abstract
No abstract record available.
Inventors
- 👤 George W Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:28
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/527; C08L; C08L23/00; C08L23/02; C08L23/10; C08L61/00; C08L61/04; C08L61/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROPYLENE RESINGCOMPOSITION HAVING IMPROVED STABILITY TOWARD HEAT AND LIGHT INDUCED MOLECULAR DEGRADATION AND BEING STABLE TOWARD COLOR DEVELOPMENT WHICH COMPRISES A NORMALLY SOLID PROPYLENE POLYMER, A STABILIZING AMOUNT OF AN A-STAGE PARA-TERTIARYLALKYLPHENOL-FORMALDEHYDE RESIN IN WHICH THE ALKYL GROUP OF THE PAAP-TERTIARYALKYLPHENOL CONTAINS FROM 4 TO 20 CARBON ATOMS, AND A DECOLORIZING AMOUND OF A PHOSPHOROUS-CONTAINING COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
61 words
A PROPYLENE RESINGCOMPOSITION HAVING IMPROVED STABILITY TOWARD HEAT AND LIGHT INDUCED MOLECULAR DEGRADATION AND BEING STABLE TOWARD COLOR DEVELOPMENT WHICH COMPRISES A NORMALLY SOLID PROPYLENE POLYMER, A STABILIZING AMOUNT OF AN A-STAGE PARA-TERTIARYLALKYLPHENOL-FORMALDEHYDE RESIN IN WHICH THE ALKYL GROUP OF THE PAAP-TERTIARYALKYLPHENOL CONTAINS FROM 4 TO 20 CARBON ATOMS, AND A DECOLORIZING AMOUND OF A PHOSPHOROUS-CONTAINING COMPOUND HAVING THE GENERAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |