RESIN WITH LOW SODIUM CONTENT Russian patent published in 2021 - IPC B01J47/16 B01J49/08 B01J49/09 B01J49/50 B01J41/05 

FIELD: chemistry.

SUBSTANCE: invention relates to the chemical industry. A batch of resin granules containing more than 100 ppb by weight of sodium and one or more vinyl polymers wherein 90 mol % and more of quaternary ammonium groups are associated with a hydroxide anion and wherein a cation exchange resin absent is brought to contact with aqueous ammonium hydroxide. Water and compounds dissolved therein are then separated from the resulting mixture.

EFFECT: invention ensures complete removal of sodium from a batch of resin granules.

2 cl, 3 ex