Patent US2679504A successfully refreshed from Google Patents.
US2679504A
Expired / Lapsed
US
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Surface active compositions and method of making same
Assignee: Process Chemicals Co
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Filing: 1952-03-06
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Granted: 1954-05-25
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Expires: 1972-03-06
Abstract
No abstract record available.
Inventors
- 👤 Katzman Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:33
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/16; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07; Y10S516/905; Y10S516/909; Y10S516/91; Y10S516/911; Y10S516/914; Y10S516/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF PREPARING REACTION PRODUCTS HAVING INTERFACE SURFACE ACTIVITY WHICH COMPRISES THE STEPS OF REACTING AN ALKYLOAMINE HAVING AT LEAST ONE REPLACEABLE HYDROGEN ATTACHED TO THE NITROGEN WITH A LONG CHAIN ACYLATING AGENT TO PRODUCE A MIXTURE CONTAINING A FREE UNREACTED ALKYLOLAMINE HAVING AT LEAST ONE REPLACEABLE HYDROGEN ATTACHED TO THE NITROGEN AND A CONDENSATION PRODUCT OF A LONG CHAIN ACYLATING AGENT AND AN ALKYLOLAMINE, THEN REACTING SAID MIXTURE WITH A HYDROGEN REPLACING AGENT FOR SAID REPLACEABLE HYDROGEN OF SAID UNREACTED ALKYLOLAMINE, SAID AGENT BEING SELECTED FROM THE GROUP CONSISTING OF AN ALKOXYLATING AGENT, AN ALKYLATING AGENT AND A SHORT CHAIN ACYLATING AGENT, THE AMOUNT OF SAID HYDROGEN REPLACING AGENT BEING SUFFICIENT TO REACT ONLY WITH THE AMINO HYDROGEN OF THE FREE UNREACTED ALKYLOLAMINE.
Claim 2
Independent Claim
125 words
THE METHOD OF PREPARING REACTION PRODUCTS HAVING INTERFACE SURFACE ACTIVITY WHICH COMPRISES THE STEPS OF REACTING AN ALKYLOAMINE HAVING AT LEAST ONE REPLACEABLE HYDROGEN ATTACHED TO THE NITROGEN WITH A LONG CHAIN ACYLATING AGENT TO PRODUCE A MIXTURE CONTAINING A FREE UNREACTED ALKYLOLAMINE HAVING AT LEAST ONE REPLACEABLE HYDROGEN ATTACHED TO THE NITROGEN AND A CONDENSATION PRODUCT OF A LONG CHAIN ACYLATING AGENT AND AN ALKYLOLAMINE, THEN REACTING SAID MIXTURE WITH A HYDROGEN REPLACING AGENT FOR SAID REPLACEABLE HYDROGEN OF SAID UNREACTED ALKYLOLAMINE, SAID AGENT BEING SELECTED FROM THE GROUP CONSISTING OF AN ALKOXYLATING AGENT, AN ALKYLATING AGENT AND A SHORT CHAIN ACYLATING AGENT, THE AMOUNT OF SAID HYDROGEN REPLACING AGENT BEING SUFFICIENT TO REACT ONLY WITH THE AMINO HYDROGEN OF THE FREE UNREACTED ALKYLOLAMINE.
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) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |