The Cationic Copolymerization of Styrene and <I>p</I>-Brornostyrene in Liquid Sulfur Dioxide
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概要
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1) The cationic copolymerization of styrene and <I>p</I>-bromostyrene in liquid sulfur dioxide using boron trifluoride etherate as a catalyst has been carried out; the monomer reactivity ratios (MRR) have been found to be <I>r</I><SUB>1</SUB>=0.8 and <I>r</I><SUB>2</SUB>=0.4. The MRR value was independent of the temperature and of the quantity of the catalyst in the copolymerization.<BR>2) The effect of added solvents in liquid sulfur dioxide has also been examined. However, the MRR’s have been little affected by the added solvents, the rates of the copolymerization have largely been depressed, and the rates were not dependent on the dielectric constants of the added solvents, the rate in pure liquid sulfur dioxide being the fastest.<BR>3) The same cationic copolymerization has been conducted in benzene, carbon tetrachloride, nitrobenzene and ethylene dichloride.<BR>The MRR’s were almost equal in all (<I>r</I><SUB>1</SUB>=1.8 and <I>r</I><SUB>2</SUB>=0.3).
- 社団法人 日本化学会の論文
著者
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Matsuda Minoru
The Chemical Research Institute Of Non-aqueous Solutions
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TOKURA Niichiro
The Chemical Research Institute of Non-Aqueous Solutions
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Iino Masashi
The Chemical Research Institute of Non-Aqueous Solutions Tohoku University
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Tokura N.
The Chemical Research Institute of Non-Aqueous Solutions
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Tokura Niichiro
The Chemical Research Institute of Non-Aqueous Solutions Tohoku University
関連論文
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- On the Beckmann Rearrangement in Liquid Sulfur Dioxide. I : Synthesis of ε-Caprolactam
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- The Cationic Copolymerization of Styrene and p-Brornostyrene in Liquid Sulfur Dioxide
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- The Menschutkin Reaction in Liquid Sulfur Dioxide
- Solvent Effect on the Rearrangement of Cyclohexanoneoxime-p-toluenesulfonate. The Ionizing Power of Liquid Sulfur Dioxide
- The Reaction of Isobutene with Chloromethyl Methyl Ether in Liquid Sulfur Dioxide
- Effect of Solvation on the Menschutkin Reaction in Liquid Sulfur Dioxide