公开(公告)号：WO2013191987A1

公开(公告)日：2013-12-27

申请号：PCT/US2013/045412

申请日：2013-06-12

Applicant: INVISTA TECHNOLOGIES S.A R.L.

Inventor： SUN, Qun ,  DORAI, Suri, N.

IPC: C08G65/00 ,  C08G65/30 ,  C08G65/32 ,  C07C41/00

CPC classification number: C08G65/48 ,  B01J19/24 ,  B01J2219/24 ,  C08G65/30 ,  C08G65/3311

Abstract: The present invention provides an improved process and apparatus for alkanolysis of polytetramethylene ether diacetate to polytetraalkylene ether glycol in the presence of a C1 to C4 alkanol and an alkali or alkaline earth metal catalyst wherein the catalyst component of the product mixture comprising polytetraalkylene ether glycol, alkanol and catalyst, essentially free of the alkanol acetate by-product, e.g., methyl acetate is removed by contacting the mixture in the absence of added water with certain ion exchange resin at specified contact conditions. The invention further provides a highly efficient method for removing the catalyst component of a mixture comprising polytetraalkylene ether glycol, alkanol and alkali or alkaline earth metal catalyst by contacting the mixture in the absence of added water with certain ion exchange resin at specified contact conditions,

Abstract translation: 本发明提供了在C1至C4链烷醇和碱金属或碱土金属催化剂存在下将聚四亚甲基醚二乙酸酯分解成聚四亚乙基醚二醇的改进方法和装置，其中产物混合物的催化剂组分包含聚四亚乙基醚二醇，链烷醇 和催化剂，基本上不含链烷醇乙酸酯副产物，例如，在特定接触条件下，通过在不加入水的情况下将某些离子交换树脂与混合物接触来除去乙酸甲酯。 本发明还提供了一种用于通过在不存在加入水的情况下将混合物与特定的离子交换树脂在特定的接触条件下接触来除去包含聚四亚烷基醚二醇，链烷醇和碱金属或碱土金属催化剂的混合物的催化剂组分的高效方法，

公开(公告)号：WO2014004110A1

公开(公告)日：2014-01-03

申请号：PCT/US2013/045786

申请日：2013-06-14

Applicant: INVISTA TECHNOLOGIES S.A R.L.

Inventor： DORAI, Suri, N. ,  SUN, Qun

IPC: C08G65/30

CPC classification number: C07D307/08 ,  C08G65/20 ,  C08G65/30 ,  C08G2650/12

Abstract: The present invention provides an improved process for preparing a narrow molecular weight distributed polytetramethylene ether glycol (PTMEG). The product polytetramethylene ether glycol has an increased number average molecular weight, a lowered polydispersity and a reduced molecular weight ratio when compared to the polytetramethylene ether glycol in the corresponding feedstock.

Abstract translation: 本发明提供了制备窄分子量分布的聚四亚甲基醚二醇（PTMEG）的改进方法。 与相应原料中的聚四亚甲基醚二醇相比，产物聚四亚甲基醚二醇具有增加的数均分子量，降低的多分散性和降低的分子量比。

公开(公告)号：WO2013022644A1

公开(公告)日：2013-02-14

申请号：PCT/US2012/048915

申请日：2012-07-31

Applicant: INVISTA TECHNOLOGIES S.A R.L. ,  DORAI, Suri, N.

Inventor： DORAI, Suri, N.

IPC: C08G65/30

CPC classification number: C08G65/20 ,  C08G65/30

Abstract: A method for minimizing color growth in a polyether polyol product during storage and loading comprising the steps of providing a polyether polyol product to be stored and loaded for transport, wherein oxidation of the polyether polyol product would cause unwanted color growth and providing a system of storage and loading tanks and maintaining the storage and loading tanks below a set temperature to prevent oxidation of the polyether polyol product. Prior to filling the tanks with the polyether polyol product, substantially all of the air in the storage and loading tanks is replaced with an inert gas. After filling the tanks with the polyether polyol product, an anti-air intrusion system is provided to prevent additional air from entering the storage and loading tanks.

Abstract translation: 一种用于在储存和加载期间最小化聚醚多元醇产物中的颜色生长的方法，包括提供待储存和加载用于运输的聚醚多元醇产物的步骤，其中聚醚多元醇产物的氧化将引起不期望的颜色生长并提供储存系统 和装载罐，并将储存和装载罐保持在设定温度以下，以防止聚醚多元醇产物的氧化。 在用聚醚多元醇产物填充罐之前，储存和装载罐中的大部分空气被惰性气体代替。 在用聚醚多元醇产品填充罐之后，提供防空气入侵系统以防止额外的空气进入储存和装载罐。