US2952659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyethylene stabilized with alkali metal salts
Assignee: Dow Chemical Co
•
Filing: 1955-12-19
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Granted: 1960-09-13
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Expires: 1975-12-19
Abstract
No abstract record available.
Inventors
- 👤 Charles R Pfeifer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:25
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 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 IN THE POLYMERIZED MATERIAL, AND BETWEEN ABOUT 0.005 AND 5 PERCENT BY WEIGHT OF A CORROSIONINHIBITING COMPOUND WHICH HAS A RECEPTOR FUNCTION FOR AND IS CAPABLE OF COUNTER-EFFECTING HYDROGEN HALIDE, SAID CORROSION-INHIBITING COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF SODIUM ARSENATE, SODIUM ARSENITE, SODIUM METABORATE, SODIUM TETRABORATE, SODIUM ALUMINATE, LITHIUM TETRABORATE, LITHIUM ALUMINATE, LITHIUM ARSENATE, AND POTASSIUM ARSENSITE.
Claim 2
Dependent Claim
102 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 IN THE POLYMERIZED MATERIAL, AND BETWEEN ABOUT 0.005 AND 5 PERCENT BY WEIGHT OF A CORROSIONINHIBITING COMPOUND WHICH HAS A RECEPTOR FUNCTION FOR AND IS CAPABLE OF COUNTER-EFFECTING HYDROGEN HALIDE, SAID CORROSION-INHIBITING COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF SODIUM ARSENATE, SODIUM ARSENITE, SODIUM METABORATE, SODIUM TETRABORATE, SODIUM ALUMINATE, LITHIUM TETRABORATE, LITHIUM ALUMINATE, LITHIUM ARSENATE, AND POTASSIUM ARSENSITE.
References Cited (Backward Citations)
US2734892A
Cited
US2218645A
Cited
US2387571A
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US2364410A
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US2507142A
Cited
BE533362A
Cited
US2838477A
Cited
US2843577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |