发明名称 |
Process for the removal of heavy metals from contaminants |
摘要 |
A process for the treatment of contaminants using metal scavenger is disclosed. The metal scavengers individually comprise a polyamine derivative and a polyethyleneimine derivative. The polyamine derivative is formed of a polyamine having a molecular weight not higher than 500 and contains, per molecule of the polyamine, at least one dithiocarboxyl group or a salt thereof as an N-substituting group substituted for an active hydrogen atom of the polyamine. The polyethyleneimine derivative is formed from a polyethyleneimine having an average molecular weight of at least 5,000 and contains, per molecule of the polyethyleneimine, at least one dithiocarboxyl group or a salt thereof as an N-substituting group substituted for an active hydrogen atom of the polyethyleneimine.
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申请公布号 |
US5347071(A) |
申请公布日期 |
1994.09.13 |
申请号 |
US19920970879 |
申请日期 |
1992.11.03 |
申请人 |
MIYOSHI YUSHI KABUSHIKI KAISHA |
发明人 |
MORIYA, MASAFUMI;HOSODA, KAZUO;YOSHIDA, MASATOSHI;TSUKANOME, MASAYOSHI |
分类号 |
C02F1/28;C02F1/52;(IPC1-7):C02F11/14 |
主分类号 |
C02F1/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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