| 摘要 |
PURPOSE:To obtain the titled high-molecular compound having melt moldability, solvent solubility and improved processability, by reacting a 1,4-dihalo-2,5-diisopropoxybenzene with Mg and polymerizing the product in the presence of a specified catalyst. CONSTITUTION:A 1,4-dihalo-2,5-diisopropoxybenzene is reacted with magnesium in the presence of a solvent in an inert gas stream. The produced Grignard reagent is polymerized by elimination of a magnesium halide in the presence of a catalyst which is a primary transition metal compound or its complex to obtain poly(diisopropoxyphenylene) having a structural unit of the formula. Examples of the catalysts which can be used include anhydrous halides or salts, such as acetates of sulfates of Ni, Cr, Pd or the like, or transition metal complexes such as nickel bisacetylacetonate and nickel (II)bis(diphenylphosphino) ethane dichloride.
|
