Perfluoroalkylthioethyl ether derivatives
Patent 4266080 Issued on May 5, 1981. Estimated Expiration Date: 
May 5, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 5, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesNew Rf -glycols containing two perfluoroalkylthio groups and useful compositions therefrom RF-glycols containing two perfluoroalkylthio groups and useful compositions therefrom Patent #: 4001305 InventorsAssigneeApplicationNo. 05/874714 filed on 02/02/1978US Classes:568/45, Plural oxygens containing516/161, The compound contains nitrogen, except if present solely as NH4+ (e.g., nitroso phenol)516/191, The compound contains ether group (e.g., polyethylene oxide)516/67, The agent contains organic compound containing nitrogen, except if present solely as NH4+516/72, The agent contains organic compound containing oxygen528/376, With ethylenically unsaturated reactant544/158, Sulfur attached directly or indirectly to morpholine ring by nonionic bonding544/159, Nitrogen attached directly or indirectly to morpholine ring by nonionic bonding544/395, The other ring nitrogen is unsubstituted or alkyl substituted only, or salt thereof544/398, Chalcogen attached indirectly to the piperazine ring by nonionic bonding546/184, Piperidines546/232, Chalcogen attached indirectly to the piperidine ring by nonionic bonding546/246, Nitrogen attached indirectly to the piperidine ring by nonionic bonding546/248, Chalcogen attached indirectly to the piperidine ring by nonionic bonding548/574, The chalcogen is in a substituent attached to the ring nitrogen of the five membered hetero ring554/101, Thioether, thiol, or mercaptide containing560/109, Esterified phenolic hydroxy560/110, Nitrogen in alcohol moiety560/111, Halogen in alcohol moiety560/135, Sulfur in phenolic moiety560/142, Nitrogen or sulfur in phenolic moiety560/165, Sulfur or nitrogen in alcohol moiety560/222, Phosphorus, sulfur or nitrogen in alcohol moiety560/253, Acyclic alcohol moiety560/264, Substituted560/32, Ring in alcohol moiety560/33, Sulfur, nitrogen, halogen or additional oxy in alcohol moiety564/500, Sulfur attached indirectly to the amino nitrogen by nonionic bonding568/50, Thiol or plural thioethers containing568/51Oxygen bonded directly to a ringExaminersPrimary: Daus, Donald G.Assistant: Eakin, M. C. Attorney, Agent or FirmInternational ClassC11D 1/00 (20060101)AbstractPerfluoroalkyl compounds containing ether groups have the formulawherein Rf is a perfluoroalkyl, R1 is alkylene or alkyleneoxy or aminoalkylene, T is alkylene, and Z is hydrogen; hydroxy; NR3 R4, where R3 and R4 each is alkyl or together with nitrogen form a heterocyclic ring; N+ R3 R4 (R5)Xz-y, where R5 is hydrogen, oxide, alkyl, or substituted alkyl, X is an anion, and y is 1 or 2; z is 0 or 1 or is --OCH2 CH2 SR1 Rf ; can be prepared directly by free-radical catalyzed addition of a perfluoroalkylthiol to a vinyl ether or subsequent reaction. These compounds are useful as surfactants and oil spill collecting agents. |
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