Patent US2982756A successfully refreshed from Google Patents.
US2982756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of polymers with sulfur
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1958-09-18
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Granted: 1961-05-02
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Expires: 1978-09-18
Abstract
No abstract record available.
Inventors
- 👤 Philip L Mercier
- 👤 Francis P Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:04
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C08K3/00; C08K3/02; C08K3/06; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A METHOD OF STABILIZING AGAINST OXIDATIVE DEGRADATION AN ALPHA MONOOLEFIN, SOLID HYDROCARBON HOMOPOLYMER, PREPARED IN THE PRESENCE OF A CATALYST CONTAINING A PARTIALLY REDUCED, HEAVY, TRANSITION METAL HALIDE, WITH AN ORGANIC, NON-STAINING ANTIOXIDANT SELECTED FROM THE GROUP CONSISTING OF 4,4''-THIOBIS(3-METHYL-6-T-BUTYL-PHENOL) AND N-LAUROYL P-AMINO PHENOL THE IMPROVEMENT WHICH COMPRISES ADDITIONALLY INCORPORATING IN THE POLYMER FROM 0.01 TO 2 WEIGHT PERCENT OF ELEMENTAL SULFUR.
Claim 2
Dependent Claim
63 words
IN A METHOD OF STABILIZING AGAINST OXIDATIVE DEGRADATION AN ALPHA MONOOLEFIN, SOLID HYDROCARBON HOMOPOLYMER, PREPARED IN THE PRESENCE OF A CATALYST CONTAINING A PARTIALLY REDUCED, HEAVY, TRANSITION METAL HALIDE, WITH AN ORGANIC, NON-STAINING ANTIOXIDANT SELECTED FROM THE GROUP CONSISTING OF 4,4''-THIOBIS(3-METHYL-6-T-BUTYL-PHENOL) AND N-LAUROYL P-AMINO PHENOL THE IMPROVEMENT WHICH COMPRISES ADDITIONALLY INCORPORATING IN THE POLYMER FROM 0.01 TO 2 WEIGHT PERCENT OF ELEMENTAL SULFUR.
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) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |