公开(公告)号：US20160319067A1

公开(公告)日：2016-11-03

申请号：US15108486

申请日：2015-01-05

Applicant: INVESTA TECHNOLOGIES S.A.R.L.

Inventor： Richard P. BEATTY ,  Qun SUN

IPC: C08G63/672

CPC classification number: C08G63/672 ,  C08G65/20 ,  C08G65/2696 ,  C08G65/30 ,  C08G65/3322

Abstract: The present invention relates to a process for manufacturing copolyether ester polyol having a low oligomeric cyclic ether content, for example, less than about 2.0% by weight, from feedstock comprising polytetramethylene ether glycol having a low number average molecular weight, for example, 350 g/mol or less, and a high oligomeric cyclic ether content, for example, about 4.0% by weight or greater.

Abstract translation: 本发明涉及由具有低数均分子量的聚四亚甲基醚二醇的原料制备的共聚醚酯多元醇的方法，所述共聚醚酯多元醇的低聚环醚含量低于例如小于约2.0重量％，例如，350克 /摩尔以下，高低聚环醚含量，例如约4.0重量％以上。