The present invention relates to iodine demand disinfectants. It relates in particular
to a process for preparing a polyiodide-resin for use as an iodine demand disinfectant
wherein a porous strong base anion exchange resin in a salt form, is contacted
with a material capable of donating a member absorbable by the resin so as to convert
the resin to the polyiodide-resin. The adsorbable member is selected from the group
comprising I2 and polyiodide ion having a valence of -1. The process
is characterized in that conversion of the anion exchange resin to the polyiodide-resin
is effected at elevated temperature and elevated pressure, the elevated temperature
being 100 degrees C. or higher, the elevated pressure being greater than atmospheric
pressure. The present invention also relates to disinfectant substance comprising
an iodine (impregnated) resin as produced by the above process.
