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发明公开
CN104774154A 超强碱离子液体催化醇解聚对苯二甲酸乙二醇酯的方法 无效 - 驳回

超强碱离子液体催化醇解聚对苯二甲酸乙二醇酯的方法
摘要：
本发明涉及一种超强碱类离子液体催化醇解聚对苯二甲酸乙二醇酯（PET）的方法，其特征在于以超强碱离子液体为催化剂，以乙二醇、二乙二醇、丙二醇、丁二醇、戊二醇、己二醇、庚二醇中的一种或几种混合物为溶剂，催化剂用量为溶剂质量的0.05%～30%，反应温度为120℃～250℃，压力1atm，反应时间0.5h-10h的条件下醇解聚对苯二甲酸乙二醇酯。该方法反应速度快，转化率高，且条件温和，催化剂活性强、可循环使用，产物易分离。
摘要（英）：

The invention relates to a method for catalytic alcoholysis of polyethylene glycol terephthalate (PET) with a super-strong alkaline ionic liquid, and is characterized in that the super-strong alkaline ionic liquid is used as a catalyst, a mixture of one or more of ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol and heptamethylene glycol is used as a solvent, the amount of the catalyst is 0.05%-30% of the mass of the solvent, and under conditions that the reaction temperature is 120 DEG C-250 DEG C, the pressure is 1 atm and the reaction time is 0.5 h-10 h, PET is subjected to alcoholysis. The method has the advantages of fast reaction speed, high conversion rate and mild conditions, the catalyst has strong activity and can be recycled, and the product is easy to separate.

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