Embodiments in accordance with the present invention encompass compositions containing a latent catalyst and a compound capable of generating a Bronsted acid with a counterion capable of coordinating and activating the latent catalyst along with one or more monomers which undergo ring open metathesis polymerization (ROMP) when said composition is exposed to a suitable radiation to form a three-dimensional (3D) object. The catalyst system employed therein can be sensitive to oxygen and thus inhibits polymerization in ambient atmospheric conditions. The three-dimensional objects made by this process exhibits improved mechanical properties, particularly, high distortion temperature, impact strength, elongation to break, among others. Accordingly, compositions of this invention are useful as 3D inkjet materials for forming high impact strength objects of various sizes with microscale features lower than 100 microns, among various other uses.
根据本发明的实施方案,包含一种潜伏催化剂和一种化合物的组合物,该化合物能够生成一种具有反离子的勃朗斯特德酸,该反离子能够配位和活化潜伏催化剂以及一种或多种单体,当所述组合物暴露在适当的辐射下以形成三维(3D)物体时,这些单体会发生开环偏聚(ROMP)。其中采用的催化剂系统可能对
氧气敏感,因此在环境大气条件下会抑制聚合。通过这种工艺制作的三维物体具有更好的机械性能,特别是高变形温度、冲击强度和断裂伸长率等。因此,本发明的组合物可用作三维喷墨材料,用于形成具有低于 100 微米的微观特征的各种尺寸的高冲击强度物体,以及其他各种用途。