Process for preparing an aminomethylphosphonic chelating resin

Details Process for preparing an aminomethylphosphonic chelating resin Process for preparing an aminomethylphosphonic chelating resin

C - Chemistry, Metallurgy

08

F

252/31, 362/41

C08F 8/40 (2006.01) B01J 20/26 (2006.01) C02F 1/58 (2006.01)

Patent

CA 1334747

Aminomethylphosphonic chelating resins are prepared by amination, hydrolysis and methylphosphonation of haloalkylated polymer beads. The amination of the haloalkylated polymer beads is carried out with hexamethylenetetramine. The produced haloaminated beads are hydrolysed and methylphos- phonated in one single step without addition of a substantial amount of formaldehyde or a formaldehyde releasing compound.

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