A collector is disclosed that is made of a polyolefin fiber having amidoxime groups and that is capable of efficient adsorptive recovery of useful metals such as uranium, vanadium, cobalt and titanium which are dissolved in small quantities in seawater. In the presence of a polymerizable monomer having a hydrophilic group, a polymerizable monomer having a cyano group is grafted to a polyolefin fiber by radiation-initiated graft polymerization to form both a hydrophilic group and a cyano group in the same graft side chains, and the cyano groups in the graft side chains are reacted with hydroxylamine to be converted to amidoxime groups, thereby producing a collector capable of recovering dissolved metals from seawater.

Um coletor é divulgado que sejam feitos de uma fibra do polyolefin que tem grupos do amidoxime e que seja capaz da recuperação adsorptive eficiente dos metais úteis tais como o urânio, o vanadium, o cobalt e o titânio que são dissolvidos em quantidades pequenas no seawater. Na presença de um monomer polymerizable que tem um grupo hydrophilic, um monomer polymerizable que tem um grupo cyano grafted a uma fibra do polyolefin pela polimerização radiação-iniciada do graft para dar forma a um grupo hydrophilic e a um grupo cyano no mesmo correntes laterais do graft, e os grupos cyano nas correntes laterais do graft são reagidos com o hydroxylamine a ser convertido aos grupos do amidoxime, produzindo desse modo um coletor capaz de recuperar metais dissolvidos do seawater.

 
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> Collector of dissolved metal from sea water having an amidoxime group and a hydrophilic group, a method for production thereof

> Radiation-grafted solid supports for chemical synthesis

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