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    Fluorine-containing blocked isocyanates
    3.
    发明授权
    Fluorine-containing blocked isocyanates 失效
    含氟封闭异氰酸酯

    公开(公告)号：US06509433B2

    公开(公告)日：2003-01-21

    申请号：US09955228

    申请日：2001-09-14

    申请人： Eberhard Koenig ,  Beate Baumbach ,  Christian Füssel ,  Juan Gonzalez-Blanco

    发明人： Eberhard Koenig ,  Beate Baumbach ,  Christian Füssel ,  Juan Gonzalez-Blanco

    IPC分类号： C08G1838

    CPC分类号： C08G18/8087 ,  C08G18/8074 ,  C08G2150/20 ,  C09D175/04

    摘要： The present invention relates to blocked fluorine-containing polyisocyanates which have a fluorine content, calculated as F=19, of 1.0 to 20.0 wt. %, preferably 4.0 to 10.0 wt. %, and are suitable for preparing stoving coatings having a water- and soil-repellent surface, wherein the fluorine-containing polyisocyanates are based on the reaction product of aliphatic polyisocyanates or polyisocyanate mixtures having an NCO content of 10 to 25 wt. % and a functionality of at least 2.5 with monofunctional isocyanate blocking agents and a fluorinated monoalcohols wherein i) 75 to 95 equivalent-% of the isocyanate groups are reacted with isocyanate blocking agents, ii) 5 to 25 equivalent-% of the isocyanate groups are reacted with fluorinated monoalcohols and iii) the equivalents of i) and ii) add up to 100%. The present invention also relates to a process for the preparation of these blocked fluorine-containing polyisocyanates and to their use as crosslinking agents in the preparation of polyurethane plastics, especially polyurethane coatings.

    摘要翻译： 本发明涉及以F = 19计算的氟含量为1.0〜20.0重量％的封闭含氟多异氰酸酯。 ％，优选4.0〜10.0wt。 ％，适用于制备具有防水和防污表面的烘烤涂料，其中含氟多异氰酸酯基于NCO含量为10至25重量％的脂族多异氰酸酯或多异氰酸酯混合物的反应产物。 ％和官能度至少为2.5，其中单官能异氰酸酯封端剂和氟化一元醇，其中75％至95％当量的异氰酸酯基团与异氰酸酯封闭剂反应，ii）5至25当量异氰酸酯基团反应 氟化一元醇和iii）i）的当量和ii）加起来至100％。本发明还涉及一种制备这些封闭的含氟多异氰酸酯的方法及其在制备聚氨酯塑料中作为交联剂的用途 ，特别是聚氨酯涂料。