PROCESS FOR THE PREPARATION OF POLYKETONE POLYMERS

摘要

Process for the preparation of copolymers of carbon monoxide, ethene and optionally up to 5 wt.% based on total weight of polymer of a C3+ olefin, in which (copolymers) the units originating from carbon monoxide and the units originating from ethene or C3+ olefin occur in a substantially alternating order, said process comprising copolymerizing carbon monoxide, ethene and optionally C3+ olefin in the presence of a suitable catalyst composition comprising a Group VIII metal, wherein the molar ratio of carbon monoxide to ethene plus C3+ olefin is at most 0.25 during copolymerization and wherein the molar ratio of C3+ olefin to ethene is in the range of from 0 to 0.8.