公开(公告)号：US06403842B1

公开(公告)日：2002-06-11

申请号：US09482641

申请日：2000-01-13

申请人： Mitsuharu Kobayashi ,  Nobuyuki Murai

发明人： Mitsuharu Kobayashi ,  Nobuyuki Murai

IPC分类号： C07C4313

CPC分类号： C08G18/4854 ,  C08G65/20 ,  C08G65/2615 ,  C08G65/2657 ,  C08G65/266 ,  C08G65/2693

摘要： Disclosed are a process for producing a poly(alkylene ether) glycol which comprises polymerizing a cyclic ether in the presence of at least a catalyst and a carboxylic acid anhydride, wherein the carboxylic acid anhydride has a ketene dimer content of 50 ppm or lower, and a process for producing a poly(alkylene ether) glycol which comprises polymerizing a cyclic ether in the presence of at least a catalyst and acetic anhydride, wherein the acetic anhydride is purified acetic anhydride obtained by treating acetic anhydride by contacting with at least one of a metal oxide and a mixed oxide, and optionally, distilling the acetic anhydride simultaneously with or after the contact treatment.

摘要翻译： 公开了一种制备聚（亚烷基醚）二醇的方法，其包括在至少一种催化剂和羧酸酐存在下使环醚聚合，其中羧酸酐的乙烯酮二聚体含量为50ppm或更低，以及 一种制备聚（亚烷基醚）二醇的方法，其包括在至少一种催化剂和乙酸酐的存在下使环醚聚合，其中所述乙酸酐是通过用乙酸酐与至少一种 金属氧化物和混合氧化物，并且任选地，在接触处理之后或之后蒸馏乙酸酐。

公开(公告)号：US06255537B1

公开(公告)日：2001-07-03

申请号：US09289990

申请日：1999-04-13

申请人： Takaomi Hayashi ,  Katsuhiko Funaki ,  Atsushi Shibahara ,  Kazumi Mizutani ,  Isao Hara ,  Shinji Kiyono ,  Tadahito Nobori ,  Usaji Takaki

发明人： Takaomi Hayashi ,  Katsuhiko Funaki ,  Atsushi Shibahara ,  Kazumi Mizutani ,  Isao Hara ,  Shinji Kiyono ,  Tadahito Nobori ,  Usaji Takaki

IPC分类号： C07C4313

CPC分类号： C08G65/2675 ,  C08G65/10 ,  C08G65/2663

摘要： There is provided a process for preparing a poly(alkylene oxide) by using a polymerization initiator which does not cause any problem on preparing and handling in the preparation of the polyalkylene oxide by polymerizing an alkylene oxide compound and does not require a special treatment before the initiation of the polymerization. That is, it is a process of polymerizing the alkylene oxide compound in the presence of a phosphine oxide compound represented by the formula (1): wherein R is the same or different and each represents a hydrocarbon group having 1 to 10 carbon atoms, and x represents an amount of water molecules contained in terms of a molar ratio and is within a range from 0 to 5.0, or in the presence of said phosphine oxide compound and an active hydrogen compound selected from water or an organic compound having a partial structural formula —OH or —NH—.

摘要翻译： 提供了一种通过使用聚合引发剂制备聚（环氧烷）的方法，该聚合引发剂在通过聚合烯化氧化合物制备聚环氧烷的制备和处理中不会引起任何问题，并且不需要在 引发聚合。 也就是说，它是在式（1）表示的氧化膦化合物存在下使烯化氧化合物聚合的方法：其中R相同或不同，各自代表具有1-10个碳原子的烃基，和 x表示以摩尔比表示的水分子的含量，在0〜5.0的范围内，或在所述氧化膦化合物和活性氢化合物存在下，选自水或具有部分结构式的有机化合物 -OH或-NH-。