Heat-stable anion exchangers
    73.
    发明申请
    Heat-stable anion exchangers 有权
    热稳定阴离子交换剂

    公开(公告)号:US20080087604A1

    公开(公告)日:2008-04-17

    申请号:US11899125

    申请日:2007-09-04

    IPC分类号: C08J9/00 B01D15/04

    摘要: The present invention relates to heat-stable anion exchangers based on at least one aromatic monomer and at least one crosslinker having structural elements of the general formula (I) where Ak, Ak′, Ak″ are in each case independently of one another identically or differently a C1-C18-alkyl radical, n is an even number between 5 and 18, x+y=2 and X is Cl, Br, OH, HCO3, HSO4, ½ (SO4), ½ CO3, NO3, F, H2PO4, ½ HPO4, ⅓ PO4 with the result that these anion exchangers, preferably in the OH form, withstand a working temperature of at least 60° C., preferably of at least 80° C., over a relatively long time, a process for production thereof and also use thereof.

    摘要翻译: 本发明涉及基于至少一种芳族单体和至少一种具有通式(I)的结构元件的交联剂的热稳定阴离子交换剂,其中Ak,Ak',Ak“在每种情况下彼此独立地彼此独立地 或者不同的是C 1 -C 18 - 烷基,n是5至18之间的偶数,x + y = 2,X是Cl,Br,OH, HCO 3,HSO 4,½(SO 4 S),1/3 CO 3,NO 3, / SUB,F,H 2 PO 4,1/2 HPO 4,1/3 PO 4,和 结果是这些阴离子交换剂优选为OH形式,在相当长的时间内经受至少60℃,优选至少80℃的工作温度,其制备方法及其用途。

    Process for the preparation of silicon-dioxide-containing polymer beads
    76.
    发明申请
    Process for the preparation of silicon-dioxide-containing polymer beads 审中-公开
    制备含二氧化硅的聚合物珠粒的方法

    公开(公告)号:US20050245664A1

    公开(公告)日:2005-11-03

    申请号:US11108962

    申请日:2005-04-19

    CPC分类号: C08F112/08 C08F2/10 C08F2/44

    摘要: The present invention relates to a process for the preparation of silicon-dioxide-containing polymer beads by producing a mixture of styrene, crosslinker, finely divided surface-modified silicon dioxide, free-radical initiator and, if appropriate, inert agent and curing the resultant mixture in aqueous phase at elevated temperature to give a polymer bead, the silicon-dioxide-containing polymer beads themselves, and also uses thereof.

    摘要翻译: 本发明涉及通过制备苯乙烯,交联剂,细分散的表面改性二氧化硅,自由基引发剂和(如果合适的话)惰性剂的混合物制备含二氧化硅的聚合物珠粒的方法,并固化所得物 在高温下在水相中混合,得到聚合物珠粒,含二氧化硅的聚合物珠粒本身,以及其用途。

    Production of monodisperse spherical polymers using seed polymers with a comb structure
    80.
    发明授权
    Production of monodisperse spherical polymers using seed polymers with a comb structure 有权
    使用具有梳结构的种子聚合物生产单分散球形聚合物

    公开(公告)号:US06291553B1

    公开(公告)日:2001-09-18

    申请号:US09419413

    申请日:1999-10-15

    IPC分类号: C08F29100

    摘要: Producing spherical polymers having a weight-averaged average particle diameter of 1 to 50 &mgr;m using a seed/feed process comprising the following steps: a) suspension of a monodisperse spherical seed in an aqueous phase, b) addition of at least one monomer and an initiator, c) polymerization of the monomer, of which there is at least one, wherein the seed consists of a polymer having a comb structure, gives rise to products having a particularly narrow grain size distribution.

    摘要翻译: 使用种子/进料方法生产重均粒径为1-50μm的球形聚合物,其包括以下步骤:a)将单分散球形种子悬浮于水相中,b)加入至少一种单体和 引发剂,c)其中存在至少一种的单体的聚合,其中种子由具有梳结构的聚合物组成,产生具有特别窄的粒度分布的产物。