The Cationic Copolymerization of Styrene and Isobutene in Liquid Sulfur Dioxide

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概要

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• The copolymerizations of styrene and iso-butene in liquid sulfur dioxide and in mixtures of liquid sulfur dioxide with nitromethane, ethylene dichloride, nitrobenzene and benzene have been carried out at －78°C. The <I>r</I><SUB>1</SUB> and <I>r</I><SUB>2</SUB> values have been estimated by the intersection method. When M<SUB>1</SUB> stands for styrene and M<SUB>2</SUB> for isobutene, <I>r</I><SUB>1</SUB> and <I>r</I><SUB>2</SUB> are 1.1 and 3.1 in liquid sulfur dioxide. The <I>r</I><SUB>2</SUB> values vary, as the added solvent is changed. Two sets of <I>r</I><SUB>1</SUB> values, approximately unity and 0.5, have been found. The meager solubility of polyisobutene and isobutene sequence in the copolymer may be responsible for the findings.

• 社団法人 日本化学会の論文

著者

• Tokura Niichiro

  The Chemical Research Institute of Non-Aqueous Solution Tohoku University

• Iino M.

  The Chemical Research Institute of Non-Aqueous Solutions Tohoku University

関連論文

• On the Beckmann Rearrangement in Liquid Sulfur Dioxide. I : Synthesis of ε-Caprolactam
• Syntheses of 2, 2'-Diamino-Biphenyl and Carbazole from Phenathrene
• The Reactions of 1, 2-Cyclopentanedione Dioxime and of 1, 2, 3-and 1,3,5-Cyclohexanetrione Trioximes in Liquid Sulfur Dioxide
• The Cationic Copolymerization of Styrene and Isobutene in Liquid Sulfur Dioxide

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