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    • 3. 发明授权
    • Fluorine-containing alkylsulfobetaines, a process for their preparation
and their use
    • 含氟烷基磺基甜菜碱,其制备方法及其应用
    • US4430272A
    • 1984-02-07
    • US347178
    • 1982-02-09
    • Winfried EhrlSiegfried Jung
    • Winfried EhrlSiegfried Jung
    • A62D1/02C07C67/00C07C301/00C07C303/02C07C303/32C07C309/14C07C143/14
    • A62D1/0085
    • Fluorine-containing alkylsulfobetaines of the general formula ##STR1## wherein R.sub.f denotes a perfluoroalkyl radical having 3 to 16 C atoms, R.sub.1 and R.sub.2, which can be identical or different, denote alkyl radicals or hydroxyalkyl radicals having 1 to 4 C atoms, a is zero or 1, b assumes the value 1 when a is equal to 1 and the values 1 to 4 when a is equal to 0, and c is 3 or 4, are described. These are prepared by reacting the corresponding fluorine-containing amines with propanesultone or butanesultone in organic solvents. The compounds are distinguished in particular by high interfacial activity at the interface of water with non-miscible organic liquids and by compatibility with other surfactants. They are suitable for use as aftertreatment agents (auxiliary dispersing agents) in dispersions of fluoropolymers and as components in fire-extinguishing agents.
    • 具有通式“IMAGE”的含氟烷基磺基甜菜碱其中Rf表示具有3至16个C原子的全氟烷基,可以相同或不同的R 1和R 2表示具有1至4个C原子的烷基或羟基烷基,a是 0或1,当a等于1时,b假设值为1,当a等于0时,值为1到4,c为3或4。 这些通过相应的含氟胺与丙磺酸内酯或丁磺酸内酯在有机溶剂中反应来制备。 特别是化合物在水与不可混溶的有机液体的界面处的高界面活性以及与其它表面活性剂的相容性的区别。 它们适用于作为后处理剂(辅助分散剂)用于氟聚合物分散体和灭火剂中的组分。