Method for obtaining a material comprising a liquid crystal mix with a stabilized blue phase and optical article comprising this material
申请人:Essilor International
公开号:US10920145B2
公开(公告)日:2021-02-16
A method for obtaining a material containing mesogenic compounds forming a liquid crystal mix with a stabilized blue phase. The method includes the steps of a) inducing the liquid crystal mix, contained in a chemical composition, to form the blue phase, then b) illuminating the chemical composition with a light beam of visible wavelength in order to trigger the polymerization of monomers contained in the chemical composition, to obtain the material comprising the liquid crystal mix in the blue phase stabilized by the polymerized monomers. The chemical composition contains a mesogenic system and a chemical photo-initiator system adapted to trigger the polymerization of the monomers when illuminated by the light beam of visible wavelength, in which the mesogenic system includes the mesogenic compounds forming the liquid crystal mix, a chiral dopant adapted to induce the blue phase, and a monomer mix comprising the monomers adapted to polymerize.
一种获得含有中生化合物的材料的方法,该材料可形成具有稳定蓝相的液晶混合物。该方法包括以下步骤:a) 诱导化学组合物中的液晶混合物形成蓝相,然后 b) 用可见光波长的光束照射化学组合物,以引发化学组合物中所含单体的聚合,从而获得由聚合单体稳定的蓝相液晶混合物组成的材料。该化学组合物包含一个中间体系统和一个化学光引发剂系统,当可见光光束照射时,化学光引发剂系统可引发单体聚合,其中中间体系统包括形成液晶混合物的中间体化合物、一个可引发蓝相的手性掺杂剂和一个包含可聚合单体的单体混合物。