第５族化合物（Ｐ，Ａｓ，Ｓｂ）の存在下におけるテレフタル酸とエチレンオキシドとの反応

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タイトル別名
  • The Reaction of Terephthalic Acid with Ethylene Oxide in the Presence of Group V (P, As, Sb) Compounds
  • ダイ 5ゾク カゴウブツ P As Sb ノ ソンザイカ ニ オケル テレフタ

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抄録

Bis (2-hydroxyethyl) terephthalate is an important intermediate in the industrial poly (ethylene terephthalate) production. The reaction of terephthalic acid with ethylene oxide to form bis (2-hydroxyethyl) terephthalate was studied in the presence of Group V compounds (R3X; R=alkyl, phenyl, X=P, As, Sb) in organic solvents in order to clarify the catalytic action of these compounds. On the bases of the isolation of the intermediate and kinetic data, it was proved that the actual catalyst for the esterification was not R3X itself when X was phosphine or arsine but its quaternary salt of terephthalic acid (HO2C-C6H4-CO2 (-) X⊕ (R3) C2H4OH) formed from terephthalic acid, ethylene oxide, and R3X (X=P, As). On the other hand, when triphenylstibine was used as catalyst, quaternary stibonium terephthalate was not formed and hence the esterification reaction did not proceed. The rate of esterification of terephthalic acid with ethylene oxide decreased in the following order;<BR>(n-C4H9) 3P> (C6H5) 3P>> (C6H5) 3As>> (n-C4H9) 3Sb, (C6H5) 3Sb.

収録刊行物

  • 高分子論文集

    高分子論文集 36 (5), 311-315, 1979

    公益社団法人 高分子学会

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