METHOD FOR PREPARING A POLYMER

摘要

The present invention relates to a process for preparing a catalyst, a nove l polymer and a process for preparing the polymer. In particular, the invention provides a process for preparing a homopolymer and/or copolymer having an irregular particle structure and a melt flow index (MFR 190/15) of from 1.3 g/10 min to g/10 min, a molecular weight distribution M w/M n of from 3 to 30, a bulk density of from 0.05 g/cc to 0.4 g/cc and a particle size of from 5 .mu.m to 300 .mu.m, which comprises polymerizing the monomers in the presence of a mixed catalyst comprising a titanium component and an organic aluminum compound and the presence of a molar mass regulator.