| 摘要 |
PURPOSE:To obtain the title high-MW polymer excellent in membrane forming power and useful as a material for separative membranes, adsorbents, resists, semiconductors, etc., by polymerizing o-substituted phenylacetylene. CONSTITUTION:An o-substituted phenylacetylene of formula I [wherein R<1> is a 1-8C (hetero group-substituted) alkyl, X is H or a 1-8C alkyl and l is 0-4] together with, optionally, another monomer of formula II (wherein R<2> is H or alkyl or Cl, R<3> is alkyl, aryl or trialkylsilyl) is (co)polymerized at -30-100 deg.C for 0.5-24hr in a dry nitrogen atmosphere in a solvent such as toluene in the presence of 0.1-5mol% polymerization initiator comprising a compound of a transition metal such as Mo or W to obtain the title polymer consisting of structural units of formula III and formula IV (wherein m>=2 and n is 0 or a natural number) and having a weight-average MW>=10,000.
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