PURIFICATION METHOD OF 4-HYDROXY BENZOIC ACID LONG CHAIN ESTER

• Main Authors: KIDA YUSUKE, HISANO TAKAYA, WATANABE KUMIKO, KOMATSU TOSHIHIDE
• Format: Patent
• Language: English; Japanese
• Published: 28.12.2016
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

PROBLEM TO BE SOLVED: To provide a purification method capable of easily removing residues such as a catalyst or a reaction raw material from a crude composition of 4-hydroxy benzoic acid long chain ester and providing high purity 4-hydroxy benzoic acid long chain ester at high yield.SOLUTION: There is provided a purification method of 4-hydroxy benzoic acid long chain ester including a process for melting a crude composition containing 4-hydroxy benzoic acid long chain ester represented by the formula (1) and a process for mixing the molten crude composition with a mixed solution of water and alcohol and separating them to an organic layer and a water layer and a process for extracting the separated organic layer.SELECTED DRAWING: None 【課題】４−ヒドロキシ安息香酸長鎖エステルの粗組成物から触媒や反応原料などの残存物を容易に除去することができ、高純度の４−ヒドロキシ安息香酸長鎖エステルを高収率で得られる精製方法を提供すること。【解決手段】式（１）で表される４−ヒドロキシ安息香酸長鎖エステルを含む粗組成物を溶融する工程、溶融粗組成物を水およびアルコールの混合溶液と混合し、有機層と水層に分液する工程、および分液した有機層を抽出する工程を含む、４−ヒドロキシ安息香酸長鎖エステルの精製方法。【選択図】なし