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    • 18. 发明授权
    • Photocurable compositions containing reactive particles
    • 含有反应性颗粒的光固化组合物
    • US07307123B2
    • 2007-12-11
    • US10511924
    • 2003-04-18
    • David JohnsonJohn Wai Fong
    • David JohnsonJohn Wai Fong
    • C08L63/00C08F2/46
    • H05K3/28B33Y10/00B33Y70/00G03F7/0037G03F7/032G03F7/0388G03F7/0757H05K3/0023H05K3/287H05K3/4676H05K2203/1476Y10T428/31909
    • A photocurable composition, including (a) a photocurable monomer, e.g. a cationically curable monomer and/or a radically curable monomer; (b) reactive particles comprising a crosslinked elastomeric core, e.g. made of polysiloxane material, and a shell of reactive groups on an outer surface of the core, wherein the reactive groups comprise epoxy groups, ethylenically unsaturated groups, or hydroxy groups; and (c) an appropriate photoinitiator, e.g. a radical photoinitiator; and a cationic photoinitiator. A method of making a 3-D object from such a composition and a 3-D object made by the method are also provided. The cured composition generally has a smooth surface. The use of the reactive particles makes the composition more stable and the particles do not readily separate out.
    • 光固化性组合物,包括(a)光固化性单体, 阳离子可固化单体和/或可自由基固化的单体; (b)包含交联的弹性体芯的反应性颗粒,例如 由聚硅氧烷材料制成,并且在芯的外表面上具有反应性基团的壳,其中反应性基团包括环氧基,烯键式不饱和基团或羟基; 和(c)适当的光引发剂,例如 激光光引发剂; 和阳离子光引发剂。 还提供了由这种组合物制成3-D物体的方法和通过该方法制造的3-D物体。 固化的组合物通常具有光滑的表面。 使用反应性颗粒使得组合物更稳定,并且颗粒不容易分离出来。