METHOD OF OBTAINING ION EXCHANGE MATERIAL BASED ON POLY(METH)ACRYLIC ACID HYDRAZIDE Russian patent published in 2009 - IPC C08F120/60 C08F8/30 C08F8/00 B01J20/00 

FIELD: chemistry.

SUBSTANCE: invention concerns technology of obtaining ion exchange filtering materials, particularly materials based on poly(meth)acrylic acid hydrazide, and can be applied in economics. Method of obtaining such material includes interaction of poly(meth)acrylic acid haloidanhydride solution in dimethylformamide with hydrazine or hydrazinehydrate. Obtained poly(meth)acrylic acid hydrazide is further processed by 3-5% solution of bifunctional derivative of diisocyanate group, organic dicarboxylic acid dichloroanhydride in benzene at 20-30°C. Toluylenediisocyanate, hexamethylenediisocyanate are used as diisocyanates, and terephthalic acid dichloroanhydride is used as organic dicarboxylic acid dichloroanhydride.

EFFECT: improved operational properties of material due to increase of exchange capacity, improved filtering capacity, extended lifetime due to insolubility in water.

2 cl, 1 tbl, 3 ex