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1. 发明专利

JPS59186941A Preparation of ether polycarboxylate compound 失效
标题翻译：醚类聚碳酸酯化合物的制备
公开(公告)号：JPS59186941A
公开(公告)日：1984-10-23
申请号：JP6036983
申请日：1983-04-06
申请人： Daicel Chem Ind Ltd
发明人： YATSUNAMI TETSUJI , OKABAYASHI TOKUO , MURAI YOSHIYUKI
IPC分类号： C07C59/125 , C07C51/00 , C07C51/347 , C07C59/305 , C07C67/00
摘要： PURPOSE: To prepare the titled substance in high yield, without using organic solvent, by using a hydroxyl compound, a halogenocarboxylic acid and an alkali as raw materials, mixing the hydroxyl compound with the other components in the state of aqueous solution, and heating the whole components while removing water from the system.
CONSTITUTION: The titled compound useful as a sequestering agent is prepared by the thermal reaction of a hydroxyl compound with a halogenocarboxylic acid in the presence of a stoichiometric amount of an alkali necessary for the condensation reaction. In the above process, a hydroxycarboxylic acid such as glycolic acid, lactic acid, etc. is used as the hydroxyl compound and is mixed with at least one of the other reaction components prior to the reaction in the state of aqueous solution. The amount of water is 1W3pts.wt. per 1pt.wt. of the sum of the reaction components. Thereafter, the above three components are heated while removing water from the system to effect the etherification reaction. The reaction temperature is ≥100°C under normal pressure.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了以高产率制备标题物质，不使用有机溶剂，通过使用羟基化合物，卤代羧酸和碱作为原料，以水溶液状态将羟基化合物与其它组分混合，并加热整个组件，同时从系统中清除水。构成：可用作螯合剂的标题化合物是通过羟基化合物与卤代羧酸在化学计量量的缩合反应所需的碱的存在下的热反应来制备的。在上述方法中，使用羟基羧酸如乙醇酸，乳酸等作为羟基化合物，并且在水溶液状态下在反应之前与至少一种其它反应成分混合。水量为1-3pts.wt。每1pt.wt 的反应组分之和。此后，将上述三种组分加热，同时从体系中除去水以进行醚化反应。反应温度在常压下≥100℃。

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