申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0217545A1
公开(公告)日:1987-04-08
Improved method for the production of polymethacrylates by a rapid polymerization, which comprises polymerizing an unsaturated monomer selected from a methacrylate and a monomer mixture comprising predominantly a methacrylate which may partially contain a polymer of the monomer (i.e. a syrup of the monomer or monomer mixture) in the presence of a radical polymerization initiator, a reducing compound containing sulfur in the molecule thereof, a copper-containing compound and a specific tertiary amine hydrohalogenate or a quaternary ammonium halide. Said polymethacrylates can give molded products having excellent mold release characteristics and are useful particularly for the production of optical parts such as conventional lenses, Fresnel lenses, optical recording disc media, prisms, mirrors, etc.
通过快速聚合生产聚甲基丙烯酸酯的改进方法,该方法包括在自由基聚合引发剂、 分子中含硫的还原化合物、含铜化合物和特定叔胺卤代烃或季铵卤化物存在下,聚合选 自甲基丙烯酸酯的不饱和单体和主要由甲基丙烯酸酯组成的单体混合物,该单体混合物 可能部分含有单体聚合物(即单体或单体混合物的糖浆)。上述聚甲基丙烯酸酯可制成具有优异脱模特性的模塑产品,尤其适用于生产光学部件,如传统透镜、菲涅尔透镜、光盘介质、棱镜、反射镜等。