Patent US2951056A successfully refreshed from Google Patents.
US2951056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyethylene stabilized with organic esters
Assignee: Dow Chemical Co
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Filing: 1956-02-24
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Granted: 1960-08-30
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Expires: 1976-02-24
Abstract
No abstract record available.
Inventors
- 👤 Charles R Pfeifer
- 👤 Robert L Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A NON-CORROSIVE COMPOSITION COMPRISING POLYETHYLENE PREPARED BY POLYMERIZING ETHYLENE IN THE PRESENCE OF A HALOGEN-CONTAINING CATALYST FORMED BY ADMIXING AN ALUMINUM ALKYL WITH A TITANIUM HALIDE, SAID POLYETHYLENE CONTAINING HALOGEN-INCLUDING CATALYST RESIDUES AFTER HAVING BEEN POLYMERIZED WHICH CAUSE THE PRESENCE OF HYDROGEN HALIDE AND LIKE CORRODENTS IN THE POLYMERIZED MATERIAL, AND A CORROSION-INHIBITING QUANTITY OF A GLYCIDIC ESTER COMPOUND WHICH HAS A RECEPTOR FUNCTION FOR AND IS CAPABLE OF COUNTER-EFFECTING HYDROGEN HALIDE AND LIKE CONODENTS, SAID CORROSION-INHIBITING COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF METHYL 6-CYCLOHEXYL - 1 - OXASPIRO - (2,5) - OCTANE - 2 - CARBOXYLATE, METHYL A - ETHYL - B - 4 - METHOXYPHENYLGLYCIDATE, ETHYL A - METHYL - B - (3,4 - METHYLWENEDIOXYPHENYL GLYCIDATE ETHYL A - METHYL - B - (3,4 - DIMETHOXYPHENYL)-GLYCIDATE, METHYL A - METHYL - B - (2,4 - DICHLOROPHENYL) - GLYCIDATE, 2 - ETHYLHEXYL 1 - OXASPIRO - (2,5) - OCTANE - 2 - CARBOXYLATE, AND METHYL A-N-DECYL-B-(P-METHOXYPHENYL)GLYCIDATE.
Claim 2
Dependent Claim
159 words
A NON-CORROSIVE COMPOSITION COMPRISING POLYETHYLENE PREPARED BY POLYMERIZING ETHYLENE IN THE PRESENCE OF A HALOGEN-CONTAINING CATALYST FORMED BY ADMIXING AN ALUMINUM ALKYL WITH A TITANIUM HALIDE, SAID POLYETHYLENE CONTAINING HALOGEN-INCLUDING CATALYST RESIDUES AFTER HAVING BEEN POLYMERIZED WHICH CAUSE THE PRESENCE OF HYDROGEN HALIDE AND LIKE CORRODENTS IN THE POLYMERIZED MATERIAL, AND A CORROSION-INHIBITING QUANTITY OF A GLYCIDIC ESTER COMPOUND WHICH HAS A RECEPTOR FUNCTION FOR AND IS CAPABLE OF COUNTER-EFFECTING HYDROGEN HALIDE AND LIKE CONODENTS, SAID CORROSION-INHIBITING COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF METHYL 6-CYCLOHEXYL - 1 - OXASPIRO - (2,5) - OCTANE - 2 - CARBOXYLATE, METHYL A - ETHYL - B - 4 - METHOXYPHENYLGLYCIDATE, ETHYL A - METHYL - B - (3,4 - METHYLWENEDIOXYPHENYL GLYCIDATE ETHYL A - METHYL - B - (3,4 - DIMETHOXYPHENYL)-GLYCIDATE, METHYL A - METHYL - B - (2,4 - DICHLOROPHENYL) - GLYCIDATE, 2 - ETHYLHEXYL 1 - OXASPIRO - (2,5) - OCTANE - 2 - CARBOXYLATE, AND METHYL A-N-DECYL-B-(P-METHOXYPHENYL)GLYCIDATE.
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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |