US3312658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polypropylene compositions containing (a) a nickel salt of a phosphoric acid ester, (b) a phenolic anti-oxidant, and (c) optionally an epichlorohydrinamine condensation product
Assignee: Toray Industries Inc
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Filing: 1964-10-21
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Granted: 1967-04-04
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Expires: 1984-10-21
Abstract
No abstract record available.
Inventors
- 👤 Kamijo Tsutomu
- 👤 Hatakeyama Hiroshi
- 👤 Fukumoto Osamu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:58
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0091; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A STABILIZED POLYPROPYLENE COMPOSITION COMPRISING POLYPROPYLENE AND: (1) 0.01-1 PERCENT BY WEIGHT OF AN ANTI-OXIDANT HAVING AT LEAST ONE ALKYL-SUBSTITUTED PHENOL RADICAL SELECTED FROM THE GROUP CONSISTING OF DI-TERT-BUTYL-P-CRESOL, 2, 2''-METHYLENE-BIS (4-METHYL-6-TERT-BUTYLPHONOL), 2,6BIS(2''-HYDROXY-3''-TERT - BUTYL - 5'' - METHYLBENZYL) - 4 METHYLPHENOL, 1, 1, 6-TRIS(2-METHYL4--HYDROXY-5 - TERTBUTYLPHENYL)BUTANE, 2,2''-METHYLENE-BIS(4-METHYL -6CYCLOHEXYLPHENOL), DI-N-OCTADECYL ESTER OF (4-HYDROXY-3,5-DI-TERT-BUTYL)BENZYLPHOSPHONIC ACID, 4,4''BUTYLIDENE-BIS(6-TERT-BUTYL-3-METHYLPHONOL), AND 6(4-HYDROXY-3-5- DI-TERT-BUTYLPHENYCYCLOHEXYLAMINE)2,4-BIS(N-OCTYLTHIO)-1,3,5-TRIAZINE, (2) 0.05-3 WEIGHT PERCENT OF AT LEAST ONE NICKEL SALT OF PHOSPHORIC ESTER REPRESENTED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
76 words
A STABILIZED POLYPROPYLENE COMPOSITION COMPRISING POLYPROPYLENE AND: (1) 0.01-1 PERCENT BY WEIGHT OF AN ANTI-OXIDANT HAVING AT LEAST ONE ALKYL-SUBSTITUTED PHENOL RADICAL SELECTED FROM THE GROUP CONSISTING OF DI-TERT-BUTYL-P-CRESOL, 2, 2''-METHYLENE-BIS (4-METHYL-6-TERT-BUTYLPHONOL), 2,6BIS(2''-HYDROXY-3''-TERT - BUTYL - 5'' - METHYLBENZYL) - 4 METHYLPHENOL, 1, 1, 6-TRIS(2-METHYL4--HYDROXY-5 - TERTBUTYLPHENYL)BUTANE, 2,2''-METHYLENE-BIS(4-METHYL -6CYCLOHEXYLPHENOL), DI-N-OCTADECYL ESTER OF (4-HYDROXY-3,5-DI-TERT-BUTYL)BENZYLPHOSPHONIC ACID, 4,4''BUTYLIDENE-BIS(6-TERT-BUTYL-3-METHYLPHONOL), AND 6(4-HYDROXY-3-5- DI-TERT-BUTYLPHENYCYCLOHEXYLAMINE)2,4-BIS(N-OCTYLTHIO)-1,3,5-TRIAZINE, (2) 0.05-3 WEIGHT PERCENT OF AT LEAST ONE NICKEL SALT OF PHOSPHORIC ESTER REPRESENTED BY THE GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |