申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0212980A2
公开(公告)日:1987-03-04
An improved method for the production of a polymer of a monofunctional (unsaturated) monomer, particularly polymethyl methacrylate, by a rapid crosslinking polymerization, which comprises polymerizing a mixture of a monofunctional (unsaturated) monomer, either methyl methacrylate or a monomer mixture comprising predominantly methyl methacrylate which may partially contain a polymer of the monomer (i.e. a syrup of the monomer or monomer mixture), and a polyfunctional (unsaturated) monomer in the presence of (1) a radical polymerization initiator, (2) a reducing compound containing sulfur in the molecule thereof, (3) an amine hydrohalogenate or a quaternary ammonium halide and (4) a copper-containing compound. The polymer has good mechanical properties and excellent transparency and is useful particularly for the production of optical parts such as conventional lenses, Fresnel lenses, optical recording disc media, prisms, mirrors, etc.
一种用快速交联聚合法生产单官能团(不饱和)单体聚合物,特别是聚甲基丙烯酸甲酯的改良方法,该方法包括在以下条件下聚合单官能团(不饱和)单体的混合物:甲基丙烯酸甲酯或主要由甲基丙烯酸甲酯组成的单体混合物,其中可能部分含有该单体的聚合物(即单体或单体混合物的糖浆),以及多官能团(不饱和)单体:(1)自由基聚合引发剂,(2)还原性化合物。(1) 自由基聚合引发剂;(2) 分子中含硫的还原性化合物;(3) 烃卤酸胺或季铵卤化物;(4) 含铜化合物。这种聚合物具有良好的机械性能和出色的透明度,特别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。