US2941963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating poly
Assignee: Union Carbide Corp
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Filing: 1957-06-27
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Granted: 1960-06-21
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Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick E Bailey
- 👤 John T Fitzpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:03
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS WHICH COMPRISES SLURRYING SOLID POLY(ALKYLENE OXIDE) WHICH CONTAINS RESIDUAL BASIC DIVALENT METAL-CONTAINING CATALYST THEREIN, WITH A NON-SOLVENT, ORGANIC VEHICLE, SAID ORGANIC VEHICLE CONTAINING ACID SOLUBLE THEREIN, SAID ACID BEING SELECTED FROM THE GROUP CONSISTING OF STRONG MINERAL ACIDS AND SATURATED ALIPHATIC MONOCARBOXYLIC ACIDS, THE ANION OF SAID ACID BEING CAPABLE OF FORMING WITH THE CATION OF SAID RESIDUAL DIVALENT METAL-CONTAINING CATALYST A WATER-SOLUBLE SALT, SAID ORGANIC VEHICLE CONTAINING ACID SOLUBLE THEREIN IN AN AMOUNT AT LEAST SUFFICIENT TO NEUTRALIZE SAID RESIDUAL BASIC DIVALENT METAL-CONTAINING CATALYST, FOR A PERIOD OF TIME SUFFICIENT TO SUBSTANTIALLY NEUTRALIZE SAID CATALYST-CONTAMINATED POLY(ALKYLENE OXIDE).
Claim 2
Dependent Claim
100 words
A PROCESS WHICH COMPRISES SLURRYING SOLID POLY(ALKYLENE OXIDE) WHICH CONTAINS RESIDUAL BASIC DIVALENT METAL-CONTAINING CATALYST THEREIN, WITH A NON-SOLVENT, ORGANIC VEHICLE, SAID ORGANIC VEHICLE CONTAINING ACID SOLUBLE THEREIN, SAID ACID BEING SELECTED FROM THE GROUP CONSISTING OF STRONG MINERAL ACIDS AND SATURATED ALIPHATIC MONOCARBOXYLIC ACIDS, THE ANION OF SAID ACID BEING CAPABLE OF FORMING WITH THE CATION OF SAID RESIDUAL DIVALENT METAL-CONTAINING CATALYST A WATER-SOLUBLE SALT, SAID ORGANIC VEHICLE CONTAINING ACID SOLUBLE THEREIN IN AN AMOUNT AT LEAST SUFFICIENT TO NEUTRALIZE SAID RESIDUAL BASIC DIVALENT METAL-CONTAINING CATALYST, FOR A PERIOD OF TIME SUFFICIENT TO SUBSTANTIALLY NEUTRALIZE SAID CATALYST-CONTAMINATED POLY(ALKYLENE OXIDE).
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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |