A living carbocationic catalyst composition comprising an initiator of a tertiary alkyl halide, a tertiary aralkyl halide or polymeric halide a co-initiator of an alkyl aluminum or alkyl boron, a proton scavenger and a solvent medium with a dielectric constant between 2.5 and 3.25 is used to produce...http://www.google.com.tw/patents/US5350819?utm_source=gb-gplus-share專利 US5350819 - Carbocationic catalysts and process for using said catalysts
