公开(公告)号：US5278193A

公开(公告)日：1994-01-11

申请号：US380568

申请日：1989-07-14

Applicant: Jurgen Eiffler ,  Nicholas Moon

Inventor： Jurgen Eiffler ,  Nicholas Moon

IPC: C08F8/32 ,  B01J39/12 ,  B01J43/00 ,  C08F8/40 ,  C08F8/24

CPC classification number: C08F8/40 ,  B01J39/12 ,  B01J43/00

Abstract: The ion exchange resin beads have functional groups of formula I wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, m, r and q have the meanings stated in claim 1 and which have a matrix of a cross-linked polymer wherein the level of cross-linkages is decreased in the shell area is compared to the core area.These ion exchange resin beads are prepared by reacting resin beads which have primary or secondary amino groups and the mentioned matrix of a cross-linked polymer with a1) a hypophosphite salt in the presence of an acid, or a2) a hypophosphorous acid and b) formaldehyde or a formaldehyde releasing compound.

Abstract translation: 离子交换树脂珠具有式I的官能团，其中R 1，R 2，R 3，R 4，m，r和q具有权利要求1中所述的含义，并且具有交联聚合物的基体，其中交联水平 在壳面积下降的核心区域相比。 这些离子交换树脂珠是通过使具有伯氨基或仲氨基的树脂珠和所提及的交联聚合物的基质与a）次磷酸盐在酸存在下反应制备的，或者a2）次磷酸和b） 甲醛或甲醛释放化合物。