PRODUCTION OF POLYOXYMETHYLENE AND SUITABLE CATALYSTS

摘要

A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I [ML¹_aL²_b]_c^m+Z_c.m/n^n- (I) where M is a metal of group VIII; L¹ is a ligand having at least one pi-electron pair; each L² is independently tetrahydrofuran or a ligand which is displaceable by tetrahydrofuran; Z is an anion; a is 1 or 2; b is an integer from 0 to 4; c is 1 or 2; and m and n are integers from 1 to 4.