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1. 发明授权

US5998553A Highly water-absorptive polymer and process for producing the same 失效
标题翻译：高吸水聚合物及其制备方法
公开(公告)号：US5998553A
公开(公告)日：1999-12-07
申请号：US64167
申请日：1998-04-22
申请人： Seiichiro Iida , Kiichi Ito , Sueichi Kato
发明人： Seiichiro Iida , Kiichi Ito , Sueichi Kato
IPC分类号： C08F2/00 , C08F2/32
CPC分类号： C08F2/32
摘要： A process for producing a highly water-absorptive polymer, which comprises suspending an aqueous solution containing a water-soluble polymerizable monomer and an optional crosslinking agent into droplets in a hydrophobic organic solvent in the presence of a dispersant and a water-soluble radical polymerization initiator, and allowing the water-soluble polymerizable monomer to polymerize in the droplets, wherein the dispersant is a phosphoric ester surface active agent represented by the following general formula [I]: ##STR1## wherein R.sup.1 represents an alkyl or alkylaryl group having 8 to 30 carbon atoms, R.sup.2 represents OH group or a group of the formula --(CH.sub.2 CH.sub.2 O).sub.m --OR.sup.1, and m and n are an integer of 1 to 30, andthe aqueous solution is successively fed to the hydrophobic organic solvent so that the droplets of different polymerization degrees can be present in the solvent.
摘要翻译：一种生产高吸水性聚合物的方法，其包括在分散剂和水溶性自由基聚合引发剂存在下将含有水溶性可聚合单体和任选交联剂的水溶液悬浮在疏水性有机溶剂中的小滴中并且使水溶性可聚合单体在液滴中聚合，其中分散剂是由以下通式[I]表示的磷酸酯表面活性剂：其中R1表示具有8至30个碳原子的烷基或烷芳基， R2表示OH基或式 - （CH2CH2O）m-OR1的基团，m和n为1〜30的整数，并将水溶液依次进料到疏水性有机溶剂中，使得不同聚合度的液滴可以存在于溶剂中。

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