| 摘要 |
PROBLEM TO BE SOLVED: To obtain an aliphatic dicarboxylic acid dichloride of high purity.SOLUTION: An aliphatic dicarboxylic acid dichloride is produced from an aliphatic dicarboxylic acid having a melting point of 76°C or more. Phosphorus trichloride is added and then an aliphatic dicarboxylic acid is added. At this time, 0.83 to 1.07 moles of phosphorus trichloride is added based on 1 mol of aliphatic dicarboxylic acid and the reaction is carried out at 20 to 60°C without a solvent. |
