METHOD OF ION-EXCHANGE RESIN PROCESSING Russian patent published in 2014 - IPC B01J49/00 C07C51/42 C07C67/48 C07C67/56 

FIELD: chemistry.

SUBSTANCE: group of inventions is intended for the application in the field of regeneration of ion-exchange resins, deactivation of which took place as a result of contact with contaminated unsaturated acid or a double bond ether, or as a result of contact with contaminated unsaturated acid, ether or nitrile with a double bond, which contain contaminating admixtures. Versions of regeneration methods include bringing at least partly deactivated resin in contact with alcohol and carboxylic acid to increase the resin activity.

EFFECT: methods of regeneration of acid ion-exchange resin, regenerated resin and method of obtaining and purification of unsaturated acid or a double bond ether of formula: R¹-C(=(CH₂)_m)-COOR², where R¹ and R² are hydrogen or an alkyl group, containing 1-12 carbon atoms, and m=1, provide multiple regeneration without losing the resin activity, which makes it possible to efficiently apply resin for a long time in continuous or semi-continuous processes.

17 cl, 1 dwg, 9 tbl, 10 ex