Patent US2866781A successfully refreshed from Google Patents.
US2866781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating non-acids from soap stocks
Assignee: Union Bag and Paper Corp
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Filing: 1956-07-11
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Granted: 1958-12-30
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Expires: 1976-07-11
Abstract
No abstract record available.
Inventors
- 👤 Richard R Chase
- 👤 John C Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:30
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/86; C07C51/00; C07C51/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A METHOD OF SEPARATING NON-ACID MATERIALS INCLUDING STEROLS AND HIGHER ALCOHOLS FROM A PRODUCT SELECTED FROM THE GROUP CONSISTIG OF CRUDE TALL OIL SOAP SKIMMINGS AND COTTON SEED FOOTS OBTAINED BY ALKALINE TREATMENT THEREOF, THE STEPS WHICH COMPRISE DISSOLVING SAID PRODUCT IN WATER TO FORM A WATER SOLUTION OF SAID SOAP, EXTRACTING SAID NON-ACID MATERIALS FROM SAID SOAP SOLUTION WITH AN ESTER SELECTED FROM THE GROUP CONSISTING OF ETHYL ACETATE, ISOPROPYL ACETATE, NORMAL BUTYL ACETATE, ISOBUTYL ACETATE, SECONDARY BUTYL ACETATE, AMYL ACETATE, METHYL AMYL ACETATE, AND ETHYL PROPIONATE TO PROVIDE A SOLVENT SOLUTION OF SAID NON-ACID MATERIAL, REMOVING RESIDUAL ESTER SOLVENT FROM BOTH SAID SOLVENT SOLUTION OF THE NON-ACID MATERIAL AND THE SAID SOAP SOLUTION BY EVAPORATING AND STRIPPING, ACIDIFYING THE SOLVENT-FREE SOAP SOLUTION TO LIBERATE SOAP ACIDS THEREFROM AND SEPARATING SAID NONACID MATERIAL.
Claim 2
Dependent Claim
135 words
IN A METHOD OF SEPARATING NON-ACID MATERIALS INCLUDING STEROLS AND HIGHER ALCOHOLS FROM A PRODUCT SELECTED FROM THE GROUP CONSISTIG OF CRUDE TALL OIL SOAP SKIMMINGS AND COTTON SEED FOOTS OBTAINED BY ALKALINE TREATMENT THEREOF, THE STEPS WHICH COMPRISE DISSOLVING SAID PRODUCT IN WATER TO FORM A WATER SOLUTION OF SAID SOAP, EXTRACTING SAID NON-ACID MATERIALS FROM SAID SOAP SOLUTION WITH AN ESTER SELECTED FROM THE GROUP CONSISTING OF ETHYL ACETATE, ISOPROPYL ACETATE, NORMAL BUTYL ACETATE, ISOBUTYL ACETATE, SECONDARY BUTYL ACETATE, AMYL ACETATE, METHYL AMYL ACETATE, AND ETHYL PROPIONATE TO PROVIDE A SOLVENT SOLUTION OF SAID NON-ACID MATERIAL, REMOVING RESIDUAL ESTER SOLVENT FROM BOTH SAID SOLVENT SOLUTION OF THE NON-ACID MATERIAL AND THE SAID SOAP SOLUTION BY EVAPORATING AND STRIPPING, ACIDIFYING THE SOLVENT-FREE SOAP SOLUTION TO LIBERATE SOAP ACIDS THEREFROM AND SEPARATING SAID NONACID MATERIAL.
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |