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    • 9. 发明申请
    • Fluorine-modified polyurethane resins containing one or two constituents, method for the production thereof, and use of the same
    • 含有一种或两种成分的氟改性聚氨酯树脂,其制备方法及其用途
    • US20060167206A1
    • 2006-07-27
    • US10563539
    • 2004-07-06
    • Alois MaierNorbert SteidlStefan IngrischFrank Weinelt
    • Alois MaierNorbert SteidlStefan IngrischFrank Weinelt
    • C08G18/00
    • C08G18/6225C08G18/2885C08G18/3275C08G18/3812C08G18/718C09D175/04
    • A description is given of a fluorine-modified one- or two-component polyurethane resin having improved surface properties, which is obtainable by a) preparing a fluorine-modified polyurethane prepolymer having free isocyanate groups or free amino and/or hydroxyl groups, or a fluorine-modified polyol mixture having free hydroxyl groups (binder), and by b) preparing a fluorine-modified polyurethane resin having a polymer-bonded fluorine content of 1% to 4% by weight in the system as a whole by reacting the fluorine-modified polyurethane prepolymer from stage a3) in the case of a one-component application with atmospheric moisture, or reacting the fluorine-modified polyurethane prepolymer or polyol mixture (binder) in the case of a two-component application with a crosslinker component (D) (curing agent), with a formulating component (F)(ii) in the presence if desired of a solvent component (L)(iii) and also of a catalyst. Through the use of suitable fluorinated macromonomers in the one- or two-component polyurethane resins of the invention it is possible to produce hard coating systems and/or surfaces having very low surface tensions and very high contact angles. Furthermore, the dirt pickup tendency of these polyurethane resins is also significantly reduced as compared with the known prior art.
    • 对具有改善的表面性质的氟改性单组分或双组分聚氨酯树脂进行描述,其可通过以下步骤获得:a)制备具有游离异氰酸酯基或游离氨基和/或羟基的氟改性聚氨酯预聚物,或 具有游离羟基的氟改性多元醇混合物(粘合剂),以及b)通过使该氟改性多元醇混合物中的氟 - 在具有大气湿度的单组分施用的情况下,或者在双组分的情况下使氟改性的聚氨酯预聚物或多元醇混合物(粘合剂)反应,从阶段a 3阶段的改性聚氨酯预聚物) 在需要溶剂组分(L)(iii)和催化剂的情况下,用交联剂组分(D)(固化剂)与配制组分(F)(ii)的应用。 通过在本发明的单组分或双组分聚氨酯树脂中使用合适的氟化大分子单体,可以生产具有非常低的表面张力和非常高的接触角的硬涂层体系和/或表面。 此外,与已知的现有技术相比,这些聚氨酯树脂的污垢吸收趋势也显着降低。