发明名称 |
Water-absorbent agents containing polycarboxylic amine chelating agents |
摘要 |
Water-absorbing agents containing polycarboxylic amine chelating agents. The water-absorbing agents are obtained by a process including the step of adding to a water-absorbent resin at least one chelating agent selected from the group consisting of polycarboxylic amines and maleic hydrophilic polymers. The polycarboxylic amine may be selected from a class that includes N-carboxymethyl-aspartic acid as one of its members or selected from a class that includes N,N'-bis(1,2-dicarboxyethyl)-ethylenediamine as one of its members. The water-absorbing agents have not only excellent urine resistance, but also excellent absorption properties that are stable to any composition of urine and show little change with time.
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申请公布号 |
US6599989(B2) |
申请公布日期 |
2003.07.29 |
申请号 |
US19990255433 |
申请日期 |
1999.02.22 |
申请人 |
NIPPON SKOKUBAI CO., LTD. |
发明人 |
WADA KATSUYUKI;UEDA HIROKO;TAKAHASHI NAOKO;NAGASUNA KINYA;MIYAKE KOJI;FUJITA YASUHIRO;HATSUDA TAKUMI |
分类号 |
A61L15/60;B01J20/00;B01J20/26;B01J20/28;G01N5/02;G01N15/08;(IPC1-7):C08J3/24;C08J5/04;C08J5/10 |
主分类号 |
A61L15/60 |
代理机构 |
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地址 |
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