Title:
PREPARATION OF GRANULAR RESIN FOR SELECTIVE ADSORPTION OF HEAVY METAL IONS
Document Type and Number:
Japanese Patent JPS54116091
Kind Code:
A
Abstract:
PURPOSE: To prepare the title resin having improved adsorptivity, by reacting cyanuric chloride, thiocarbohydrazide and an aminosulfonic acid (salt) in a polar aprotic solvent, and gelling the reaction product.
CONSTITUTION: 1 Mole of cyanuric chloride is made to react with 1W3 moles of thiocarbohydrazide, and an aminosulfonic acid (salt) such as sulfanylic acid, its sodium salt, etc., in a polar aprotic solvent having a dielectric constant of ≥30, e.g. N,N-dimethylformamide. The reaction product is gelled by mixing with saturated hydrocarbons having a boiling point of ≥80°C, e.g. kerosine, gas oil, etc. and adding a compound having two or more isocyanate groups in a molecule, to obtain the objective granular resin.
Inventors:
SASAKI AKIO
KAMEMARU KENICHI
ONO YOSHIKO
KAMEMARU KENICHI
ONO YOSHIKO
Application Number:
JP2389078A
Publication Date:
September 10, 1979
Filing Date:
March 01, 1978
Export Citation:
Assignee:
UNITIKA LTD
International Classes:
C08G18/00; B01D15/08; B01J20/26; C08G18/32; C08G18/64; C08G73/00; C08G73/06; (IPC1-7): B01D15/08; C08G18/64; C08G73/06