申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0112927A1
公开(公告)日:1984-07-11
A resin for lens with a high refractive index prepared by compolymerizing one or more benzenedicarboxylic acid esters substituted by halogen in the nucleus and represented by the formula (I), (wherein X represents CI or Br, n represents 2 or 4, m represents 0 or 1, and R represents H or methyl) with one or more monofunctional monomers having a refractive index of 1.55 or more as homopolymer and being radical-polymerizable, and lens composed of it are disclosed. This resin for preparing lens has a high refractive index and is excellent in workability (such as grindability) and impact resistance. In addition, the monofunctional monomer(s) and the bifunctional monomer(s) are well compatible with each other upon copolymerization, and polymerication distortion difficultly takes place.
本发明公开了一种具有高折射率的镜片用树脂,其制备方法是将一种或多种核内被卤素取代且由式(I)表示的苯二甲酸酯(其中 X 代表 CI 或 Br,n 代表 2 或 4,m 代表 0 或 1,R 代表 H 或甲基)与一种或多种折射率为 1.55 或以上且可进行自由基聚合的单官能团单体进行均聚,并由其组成镜片。 这种镜片用树脂具有高折射率,且加工性(如研磨性)和抗冲击性优异。 此外,单官能团单体和双官能团单体在共聚时彼此相容性良好,不易发生聚合变形。