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发明授权
CN108727575B 一种生物基2,5-呋喃二甲酸基共聚酯的制备方法 有权

一种生物基2,5-呋喃二甲酸基共聚酯的制备方法
摘要：
本发明涉及一种生物基2,5‑呋喃二甲酸基共聚酯的制备方法，将二元酸、脂肪族二元醇I、引导物和钛硅钴复合催化剂混合均匀后依次进行酯化反应、预缩聚反应和终缩聚反应制得生物基2,5‑呋喃二甲酸基共聚酯；引导物为生物基2,5‑呋喃二甲酸与脂肪族二元醇II反应生成的酯化物，所述二元酸与脂肪族二元醇I的摩尔比为1:1.05～1.10，钛硅钴复合催化剂为钛硅复合催化剂与钴系催化剂复合而成，钛硅复合催化剂为硅系催化剂负载钛系催化剂而得，脂肪族二元醇I与脂肪族二元醇II相同或不同。本发明的制备方法，副反应少，反应速率快，制得的产品分子量分布集中、粘度高和品质好，极具应用前景。
摘要（英）：

The invention relates to a preparation method of a bio-based 2,5-FDCA (furandicarboxylic acid)-based copolyester. Dibasic acid, aliphatic diol I, a primer and a Ti-Si-Co composite catalyst are uniformly mixed and sequentially subjected to an esterification reaction, a pre-condensation polymerization reaction and a final condensation polymerization reaction, and the bio-based 2,5-FDCA-based copolyester is prepared; the primer is ester produced through a reaction of bio-based 2,5-FDCA and aliphatic diol II, the molar ratio of dibasic acid to aliphatic diol I is 1:(1.05-1.10), the Ti-Si-Co composite catalyst is formed by compositing a Ti-Si composite catalyst and a Co catalyst, the Ti-Si composite catalyst is obtained through supporting of a Ti catalyst on a Si catalyst, and the aliphatic diol I and the aliphatic diol II are the same or different. The preparation method has few side reactions and high reaction rate, and the prepared product has concentrated molecular weight distribution,high viscosity, good quality and great application prospects.

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