会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 56. 发明专利
    • Method for obtaining aromatic dihydroxy compound from waste aromatic polycarbonate
    • 从废弃芳香族聚碳酸酯获得芳族二羟基化合物的方法
    • JP2006022029A
    • 2006-01-26
    • JP2004200620
    • 2004-07-07
    • Teijin Chem Ltd帝人化成株式会社
    • TAKEMOTO HIDEMI
    • C07C37/52C07B61/00C07C39/08C08G64/20C08J11/16C08J11/20C08J11/24C08L69/00
    • Y02W30/705Y02W30/706
    • PROBLEM TO BE SOLVED: To provide a method for obtaining an aromatic dihydroxy compound from a waste aromatic polycarbonate, by which the waste aromatic polycarbonate (for example, an aromatic polycarbonate product such as waste CD, CD-ROM or DVD) can massively be treated at a low cost to obtain the highly pure aromatic dihydroxy compound. SOLUTION: The method for obtaining the aromatic dihydroxy compound from the waste aromatic polycarbonate comprises (A) a process ((a) process) for subjecting the waste aromatic polycarbonate to a decomposition reaction comprising an ester interchange reaction in the presence of a 1 to 4C alcohol, a chlorinated compound organic solvent and a metal hydroxide, (B) a process ((b) process) for adding an acid aqueous solution to the reaction solution after the decomposition reaction to divide into an organic solvent phase and an aqueous solution phase and then recovering the organic solvent phase, (C) a process ((c) process) for separating the organic solvent, a dialkyl carbonate, and an aromatic dihydroxy compound from the organic solvent phase by distillation to obtain the aromatic dihydroxy compound, and (D) a process ((d) process) for washing the obtained aromatic dihydroxy compound with the chlorinated compound organic solvent and/or water. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供从废芳族聚碳酸酯获得芳族二羟基化合物的方法,通过该方法废废芳族聚碳酸酯(例如,诸如废物CD,CD-ROM或DVD的芳族聚碳酸酯产物)可以 以低成本大量处理以获得高纯度芳族二羟基化合物。 解决方案:从废芳族聚碳酸酯获得芳族二羟基化合物的方法包括(A)(a)工艺((a)工艺),用于在芳族聚碳酸酯存在下对包含酯交换反应的分解反应进行处理 1〜4℃的醇,氯化合物有机溶剂和金属氢氧化物,(B)将分解反应后的酸性水溶液添加到反应溶液中以分解成有机溶剂相和水溶液的方法((b)工序) 溶液相,然后回收有机溶剂相,(C)通过蒸馏从有机溶剂相中分离有机溶剂,碳酸二烷基酯和芳族二羟基化合物的方法((c)方法),得到芳族二羟基化合物, 和(D)用氯化化合物有机溶剂和/或水洗涤所得芳族二羟基化合物的方法((d)方法)。 版权所有(C)2006,JPO&NCIPI