Process for preparing polymer

本发明涉及制备催化剂的方法、一种新的聚合物和制备该聚合物的方法。本发明特别涉及一种制备具有不规则颗粒结构，具有熔体流动指数(MFR 190/15)1.3g/10min至10g/10min、分子量分布M#-[w]/M#-[n] 3至30、表观密度0.05g/cc至0.4g/cc和颗粒尺寸5μm至300μm的均聚物和/或共聚物的方法。按照所述方法，单体在由钛组分和有机铝化合物组成的混合催化剂以及相应分子量调节剂存在聚合。 The present invention relates to a process for preparing a catalyst, a novel 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 10 g/10 min, a molecular weight distribution Mw/Mn 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 mum to 300 mum, 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.