US3000963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for refining crude polymers and adducts of propylene oxide
Assignee: Jefferson Chemical Co Inc
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Filing: 1959-05-11
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Granted: 1961-09-19
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Expires: 1979-05-11
Abstract
No abstract record available.
Inventors
- 👤 George P Speranza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:58
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A METHOD FOR REFINING A CRUDE ALKYLENE REACTION PRODUCT SELECTED FROM THE GROUP CONSISTING OF CRUDE ALKYLINE POLYPROPYLENE GLYCOLS AND ADDUCTS THEREOF CONSISTING OF CARBON, HYDROGEN AND OXYGEN AS HEREINBELOW DEFINED, WHICH COMPRISES ADDING A SOLID ORGANIC ACID TO SAID CRUDE PRODUCT, SAID ACID BEING INSOLUBLE IN SAID PRODUCT AND PRODUCING SALTS THAT ARE INSOLUBLE IN SAID PRODUCT IN AN AMOUNT 10% TO ABOUT 200% IN EXCESS OF THE ALKALINE EQUIVALENT OF SAID CRUDE PRODUCT TO EFFECT A REACTION BETWEEN SAID ALKALINE-REACTING MATERIAL AND SAID ACID AND FORM SAID INSOLUBLE SALTS CRUDE PRODUCT, AND FILTERING SAID REACTION PRODUCT TO REMOVE SAID INSOLUBLE SALT AND EXCESS ORGANIC ACID THEREBY LEAVING A SUBSTANTIALLY ASH-FREE, STABILIZED POLYPROPYLENE OXIDE ADDITION PRODUCT, SAID POLYPROPYLENE GLYCOLS AND ADDUCTS BEING REPRESENTED BY THE FORMULA:
Claim 2
Independent Claim
127 words
A METHOD FOR REFINING A CRUDE ALKYLENE REACTION PRODUCT SELECTED FROM THE GROUP CONSISTING OF CRUDE ALKYLINE POLYPROPYLENE GLYCOLS AND ADDUCTS THEREOF CONSISTING OF CARBON, HYDROGEN AND OXYGEN AS HEREINBELOW DEFINED, WHICH COMPRISES ADDING A SOLID ORGANIC ACID TO SAID CRUDE PRODUCT, SAID ACID BEING INSOLUBLE IN SAID PRODUCT AND PRODUCING SALTS THAT ARE INSOLUBLE IN SAID PRODUCT IN AN AMOUNT 10% TO ABOUT 200% IN EXCESS OF THE ALKALINE EQUIVALENT OF SAID CRUDE PRODUCT TO EFFECT A REACTION BETWEEN SAID ALKALINE-REACTING MATERIAL AND SAID ACID AND FORM SAID INSOLUBLE SALTS CRUDE PRODUCT, AND FILTERING SAID REACTION PRODUCT TO REMOVE SAID INSOLUBLE SALT AND EXCESS ORGANIC ACID THEREBY LEAVING A SUBSTANTIALLY ASH-FREE, STABILIZED POLYPROPYLENE OXIDE ADDITION PRODUCT, SAID POLYPROPYLENE GLYCOLS AND ADDUCTS BEING REPRESENTED BY THE 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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |