Process for preparing an aminomethylphosphonic chelating resin

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

1989-06-16

1992-04-28

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

210688, 521 30, 521 32, 521 39, 5253267, C08F 840, B01J 4500, C01D 1314

Patent

active

051090740

ABSTRACT:
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 methylphosphonated in one single step without addition of a substantial amount of formaldehyde or a formaldehyde releasing compound.

REFERENCES:
patent: 4002564 (1977-01-01), Carbonel
Szczepaniak, W. et al., Chemia Analityczna, vol. 18, 1973, pp. 1019-1026.

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