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    • 6. 发明授权
    • Metal scavengers and processes for the production thereof
    • 金属清除剂及其生产方法
    • US5395896A
    • 1995-03-07
    • US104485
    • 1993-07-28
    • Masafumi MoriyaKazuo HosodaMasatoshi YoshidaAriaki Ohi
    • Masafumi MoriyaKazuo HosodaMasatoshi YoshidaAriaki Ohi
    • B01J20/26C02F1/62C08F8/34C08F26/02C09K3/00C02F1/56C08F28/02
    • C02F1/62C08F8/44
    • The present invention is intended to provide a metal scavenger that is free from the defects of metal scavengers formed by introducing dithioic acid groups to polyalkylenepolyamines or the like, is high in settling speed of flock when used in waste water treatment, and can carry out treatment of waste water efficiently and also to provide a process of producing the same efficiently. The present metal scavenger has a structure that is formed by replacing the hydrogen atoms linked to the nitrogen atoms of a polyamine having aminomethyl groups by dithioic acid groups or their salts and that is represented by the following general formula: ##STR1## wherein R represents a dithioic acid group, an alkali metal dithioate group, an alkaline earth metal dithioate group, or an ammonium dithioate group and R' represents a hydrogen atom, a dithioic acid group, an alkali metal dithioate group, an alkaline earth metal dithioate group, or an ammonium dithioate group.The present metal scavenger can be obtained by causing carbon disulfide to act on a polyamine having aminomethyl groups or by polymerizing a monomer having the following formula: ##STR2## wherein R represents a dithioic acid group, an alkali metal dithioate group, an alkaline earth metal dithioate group, or an ammonium dithioate group and R' represents a hydrogen atom, a dithioic acid group, an alkali metal dithioate group, an alkaline earth metal dithioate group, or an ammonium dithioate group.
    • 本发明旨在提供一种金属清除剂,其不含有通过将二硫酸基团引入聚亚烷基多胺等形成的金属清除剂的缺陷,当用于废水处理时具有高的绒毛沉降速度,并且可以进行处理 并且还提供有效地生产废水的方法。 本发明的金属清除剂具有通过用二硫酸基或其盐代替与具有氨基甲基的多胺的氮原子连接的氢原子而形成的结构,并且由以下通式表示:其中R表示 二硫代酸基,碱金属二硫酸酯基,碱土金属二硫代酸酯基或二硫代氨基铵基,R'表示氢原子,二硫代酸基,碱金属二硫代酸酯基,碱土金属二硫代酸酯基或 二硫代氨基铵 本发明的金属清除剂可以通过使二硫化碳作用于具有氨基甲基的多胺或通过聚合具有下式的单体来获得:其中R表示二硫代酸基,碱金属二硫酸酯基,碱土金属 二硫代酸酯基或二硫代氨基铵基,R'表示氢原子,二硫代酸基,碱金属二硫代酸酯基,碱土金属二硫代酸酯基或二硫代氨基铵基。
    • 7. 发明授权
    • Metal scavengers for treating waste water
    • 用于处理废水的金属清除剂
    • US5387365A
    • 1995-02-07
    • US970876
    • 1992-11-03
    • Masafumi MoriyaKazuo HosodaMasatoshi YoshidaMasayoshi Tsukanome
    • Masafumi MoriyaKazuo HosodaMasatoshi YoshidaMasayoshi Tsukanome
    • C02F1/28C02F1/52C02F5/10
    • C02F1/5272C02F1/285
    • Metal scavengers suitable for use in the treatment of waste water are 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 such that at least 30% of suitable active hydrogen atoms contained in the polyamine are substituted by the dithiocarboxyl group or salt thereof. 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 such that at least 40% of substitutable active hydrogen atoms contained in the polyethyleneimine are substituted by the dicarboxyl group or a salt thereof. The mixing ratio of the polyamine derivative to the polyethyleneimine derivative is about 9-7:1-3 by weight.
    • 公开了适用于废水处理的金​​属清除剂。 金属清除剂单独地包含多胺衍生物和聚乙烯亚胺衍生物。 多胺衍生物由分子量不高于500的多胺形成,并且每分子多胺含有至少一个二硫代羧基或其取代多胺活性氢原子的取代基的二硫代羧基或其盐, 多胺中含有的至少30%的合适的活性氢原子被二硫代羧基或其盐所取代。 聚乙烯亚胺衍生物由平均分子量为至少5,000的聚乙烯亚胺形成,并且每分子的聚乙烯亚胺含有至少一个二硫代羧基或其取代了聚乙烯亚胺的活性氢原子的取代基 使得包含在聚乙烯亚胺中的至少40%的可取代的活性氢原子被二羧基或其盐取代。 多胺衍生物与聚乙烯亚胺衍生物的混合比约为9-7:1.3重量%。