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公开(公告)号：US08222039B2
公开(公告)日：2012-07-17
申请号：US12528304
申请日：2007-02-22
IPC分类号： C08G65/329
CPC分类号： C08F8/44 , B01D15/361 , B01J47/12 , C08F6/003 , C08G65/30 , C08G65/3326 , C08G65/3346 , G01N30/02 , Y10T436/255
摘要： A process for purification of water soluble polymers is provided. A polymer of interest can be separated from a mixture of polymers, provided the polymer of interest differs from other polymers in the mixture in the number of reactive terminal groups. The process involves derivatizing polymers at the reactive terminal groups with a derivatizing molecule, bearing either (i) two or three cationic or anionic ionizable groups, and a group capable of covalent bonding to the reactive terminal groups or (ii) three or four ionizable groups, at least one of which is capable of covalent bonding to the reactive terminal groups; followed by ion exchange. The process allows removal of PEG from MPEG, and can be used for polymers having an average size greater than 9,000 Da Derivatization may be reversible in order to allow re-use of recovered contaminant polymers.
摘要翻译： 提供了一种纯化水溶性聚合物的方法。 感兴趣的聚合物可以从聚合物的混合物中分离出来，只要目的聚合物与反应性末端基团数目的混合物中的其它聚合物不同。 该方法包括用衍生化分子衍生化反应性末端基团的聚合物，该衍生化分子带有（i）两个或三个阳离子或阴离子可离子基团，以及能够与反应性末端基团共价连接的基团，或（ii）三个或四个可离子化基团 ，其中至少一个能够与反应性末端基团共价结合; 然后进行离子交换。 该方法允许从MPEG去除PEG，并且可以用于平均尺寸大于9,000Da的聚合物。衍生化可以是可逆的，以便允许再利用回收的污染物聚合物。
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公开(公告)号：US20100323452A1
公开(公告)日：2010-12-23
申请号：US12528304
申请日：2007-02-22
CPC分类号： C08F8/44 , B01D15/361 , B01J47/12 , C08F6/003 , C08G65/30 , C08G65/3326 , C08G65/3346 , G01N30/02 , Y10T436/255
摘要： A process for purification of water soluble polymers is provided. A polymer of interest can be separated from a mixture of polymers, provided the polymer of interest differs from other polymers in the mixture in the number of reactive terminal groups. The process involves derivatizing polymers at the reactive terminal groups with a derivatizing molecule, bearing either (i) two or three cationic or anionic ionizable groups, and a group capable of covalent bonding to the reactive terminal groups or (ii) three or four ionizable groups, at least one of which is capable of covalent bonding to the reactive terminal groups; followed by ion exchange. The process allows removal of PEG from MPEG, and can be used for polymers having an average size greater than 9,000 Da Derivatization may be reversible in order to allow re-use of recovered contaminant polymers.
摘要翻译： 提供了一种纯化水溶性聚合物的方法。 感兴趣的聚合物可以从聚合物的混合物中分离出来，只要目的聚合物与反应性末端基团数目的混合物中的其它聚合物不同。 该方法包括用衍生化分子衍生化反应性末端基团的聚合物，该衍生化分子带有（i）两个或三个阳离子或阴离子可离子基团，以及能够与反应性末端基团共价连接的基团，或（ii）三个或四个可离子化基团 ，其中至少一个能够与反应性末端基团共价结合; 然后进行离子交换。 该方法允许从MPEG去除PEG，并且可以用于平均尺寸大于9,000Da的聚合物。衍生化可以是可逆的，以便允许再利用回收的污染物聚合物。
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