公开(公告)号：US20170066870A1

公开(公告)日：2017-03-09

申请号：US15122694

申请日：2015-03-11

Applicant: Furanix Technologies B.V.

Inventor： Jeffrey John Kolstad ,  Gerardus Johannes Maria Gruter ,  Matheus Adrianus Dam ,  Bing Wang ,  Robert Joseph Schiavone ,  Marion L. Andrews ,  Jesper Gabriël van Berkel ,  Edward E. Paschke

IPC: C08G63/181 ,  C08G63/80 ,  C08G63/86

CPC classification number: C08G63/181 ,  C08G63/78 ,  C08G63/80 ,  C08G63/866

Abstract: A polyester, including ethylene 2,5-furandicarboxylate units, has an intrinsic viscosity of at least 0.45 d L/g, and has a relative content of carboxylic acid end groups, expressed as the fraction of the molar amount of carboxylic acid end groups divided by the sum of the molar amounts of hydroxyl end groups and carboxylic acid end groups in the range of 0.10 to 0.70. The polyester can be prepared with a method wherein a starting mixture comprising 2,5-furandicarboxylic acid and ethylene glycol is subjected to esterification and subsequent polycondensation at reduced pressure when the molar ratio of 2,5-furandicarboxylic acid to ethylene glycol in the starting mixture is 1:1.01 to 1:1.15, where water, that is formed during the reaction between 2,5-furandicarboxylic acid and ethylene glycol, and some ethylene glycol are removed in a distillation system, and where ethylene glycol that is removed with water, is separated from water and at least partly recycled.

Abstract translation: 包括2,5-呋喃二甲酸乙二酯单元的聚酯具有至少0.45d L / g的特性粘度，并且具有羧酸端基的相对含量，以羧酸端基的摩尔量的分数表示 通过羟基端基和羧酸端基的摩尔量的总和在0.10至0.70的范围内。 聚酯可以通过以下方法制备：其中包含2,5-呋喃二甲酸和乙二醇的起始混合物在起始混合物中进行酯化反应并随后在减压下进行缩聚，当起始混合物中的2,5-呋喃二羧酸与乙二醇的摩尔比 为1：1.01〜1：1.15，其中在蒸馏系统中除去在2,5-呋喃二甲酸与乙二醇的反应期间形成的水和一些乙二醇，并且其中用水除去的乙二醇， 与水分离，至少部分回收利用。