公开(公告)号：US20140024793A1

公开(公告)日：2014-01-23

申请号：US13946132

申请日：2013-07-19

Applicant: Hitachi, Ltd.

Inventor： Toshiaki MATSUO ,  Masayuki KAMIKAWA ,  Takeyuki KONDO ,  Norifumi MAEDA

IPC: C08G63/80

CPC classification number: C08G63/80 ,  C08G63/181 ,  C08G63/78 ,  C08G63/785

Abstract: Provided is a polyester production process which provides the polyester with a suitable molecular weight capable of enduring various mold processings and which can inhibit the polymer from being colored due to side reactions in synthesis.The above polyester production process comprises: an esterification step of carrying out an esterification reaction of ethylene glycol and 2,5-furandicarboxylic acid to form an oligomer and a condensation polymerization step of carrying out a condensation polymerization reaction of the oligomer to produce polyester, wherein the esterification reaction is carried out at 200 to 250° C.

Abstract translation: 提供一种聚酯制造方法，其为聚酯提供能够耐受各种成型加工的合适的分子量，并且可以抑制聚合物由于合成中的副反应而着色。 上述聚酯制造方法包括：进行乙二醇和2,5-呋喃二羧酸的酯化反应以形成低聚物的酯化步骤和进行低聚物的缩聚反应以制备聚酯的缩聚步骤，其中 酯化反应在200〜250℃下进行