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    • 50. 发明公开
    • Coated particles and coating compositions comprising coated particles
    • Beschichtungszusammensetzungen的Beschichtete Teilchen und und ihre Verwendung
    • EP1717278A1
    • 2006-11-02
    • EP05009103.2
    • 2005-04-26
    • Nuplex Resins B.V.
    • Schutyser, Jan Andre JozefVijverberg, Cornelis Adrianus Maria
    • C09C1/30C09C3/12C09C1/36C09D1/00C09C1/42
    • C09C3/12B82Y30/00C01P2004/64C01P2006/60C09C1/3081C09C1/3684C09C1/407C09C1/42C09D1/00Y10T428/29Y10T428/2995
    • The invention relates to coated particles comprising particles and a polysiloxane coating and to a process for the manufacture of said coated particles. Further, the invention relates to the use of the coated particles to improve surface properties of articles and to material compositions comprising the coated particles, in particular coating compositions. According to the invention there is provided coated particles comprising particles having a surface with hydroxy functional groups and a polysiloxane coating comprising comprising a reaction product of polysiloxane disilanol according to formula I:

      wherein n is 1 to 25, and wherein each R is a same or different hydrocarbon group, and a coating crosslinking agent, preferably an alkoxysiloxane having 3 or 4 alkoxy groups which polysiloxane coating is at least partly grafted to the particle surface by reaction with the hydroxy functional groups on the particles. The coated particles can be used to impart improved surface properties in particular in coatings.
    • 本发明涉及包含颗粒和聚硅氧烷涂层的涂覆颗粒以及用于制造所述涂覆颗粒的方法。 此外,本发明涉及涂覆颗粒改善制品的表面性能以及包含涂覆颗粒,特别是涂料组合物的材料组合物的用途。 根据本发明,提供了包含具有羟基官能团表面的颗粒和包含根据式I的聚硅氧烷二硅醇的反应产物的聚硅氧烷涂层的涂覆颗粒:其中n为1至25,并且其中每个R是相同的或 不同的烃基和涂料交联剂,优选具有3或4个烷氧基的烷氧基硅氧烷,其聚硅氧烷涂层至少部分地通过与颗粒上的羟基官能团反应而部分地接枝到颗粒表面。 涂覆的颗粒可用于赋予涂层更好的表面性能。