US2814613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production and/or separation of nonionic surface active agents
Assignee: BP PLC
•
Filing: 1953-12-14
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Granted: 1957-11-26
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Expires: 1973-12-14
Abstract
No abstract record available.
Inventors
- 👤 Desty Dennis Henry
- 👤 Harbourn Charles Leslie Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:01
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROCESS FOR THE FRACTIONATION OF A NON-IONIC SURFACE ACTIVE AGENT CONTAINING A MIXTURE OF SURFACE ACTIVE POLY ETHYL OXY CONDENSATION PRODUCTS OF COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS, RESIN ACIDS, ALCOHOLS, ALKYLATED PHENOLS AND MERCAPTANS TO OBTAIN FRACTIONS DIFFERING IN SURFACE-ACTIVE CHARACTERISTICS, WHICH COMPRISES ADDING A SATURATED ALIPHATIC HYDROCARBON AS A PRECIPITATING AGENT TO A SOLUTION OF SAID SURFACE ACTIVE AGENT IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF LOW MOLECULAR WEIGHT ALCOHOLS, LOW MOLECULAR WEIGHT KETONES, AROMATIC HYDROCARBONS, NAPHTHENES AND CHLORINATED HYDROCARBONS, SAID SURFACE ACTIVE AGENT BEING ONLY PARTIALLY SOLUBLE IN SAID PRECIPITATING AGENT AND SAID PRECIPITATING AGENT BEING A LIQUID WHICH MISCIBLE WITHH SAID SOLVENT, WHEREBY PART OF SAID SURFACE ACTIVE AGENT IS THROWN OUT OF SOLUTION TO FORM A PRECIPITATED FRACTION AND THEREAFTER RECOVERING SAID FRACTION.
Claim 2
Dependent Claim
135 words
A PROCESS FOR THE FRACTIONATION OF A NON-IONIC SURFACE ACTIVE AGENT CONTAINING A MIXTURE OF SURFACE ACTIVE POLY ETHYL OXY CONDENSATION PRODUCTS OF COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF FATTY ACIDS, RESIN ACIDS, ALCOHOLS, ALKYLATED PHENOLS AND MERCAPTANS TO OBTAIN FRACTIONS DIFFERING IN SURFACE-ACTIVE CHARACTERISTICS, WHICH COMPRISES ADDING A SATURATED ALIPHATIC HYDROCARBON AS A PRECIPITATING AGENT TO A SOLUTION OF SAID SURFACE ACTIVE AGENT IN AN ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF LOW MOLECULAR WEIGHT ALCOHOLS, LOW MOLECULAR WEIGHT KETONES, AROMATIC HYDROCARBONS, NAPHTHENES AND CHLORINATED HYDROCARBONS, SAID SURFACE ACTIVE AGENT BEING ONLY PARTIALLY SOLUBLE IN SAID PRECIPITATING AGENT AND SAID PRECIPITATING AGENT BEING A LIQUID WHICH MISCIBLE WITHH SAID SOLVENT, WHEREBY PART OF SAID SURFACE ACTIVE AGENT IS THROWN OUT OF SOLUTION TO FORM A PRECIPITATED FRACTION AND THEREAFTER RECOVERING SAID FRACTION.
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) | 1960-11-25 | 1961-05-27 | 1961-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-25 | 1965-05-27 | 1965-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-25 | 1969-05-27 | 1969-11-26 | $7700.00 | Window Closed / Lapsed |