PROCESS FOR THE PREPARATION OF A MACROMOLECULE

摘要

The present invention relates to a process for the preparation of a macromolecule wherein a core molecule contains at least one functional group. The core molecule is alternately subjected to an addition reaction in the presence of at least a vinyl compound, and a hydrogenation reaction in a reaction mixture containing at least hydrogen and a catalyst under substantially anhydrous conditions. According to this invention, the amount of metal impurities originating from the catalyst is strongly reduced and the hydrogenation reaction is much more effective. In addtion, by selection of appropriate reactants and process conditions, the amount of branching in the macromolecule is controlled.