SORBENT FOR DETERMINING COMPOUNDS OF A HYDROPHILIC NATURE AND A METHOD FOR PRODUCTION THEREOF Russian patent published in 2020 - IPC B01J20/281 

FIELD: chemistry.

SUBSTANCE: invention relates to a sorbent for determining compounds of a hydrophilic nature and a method for production thereof. Sorbent contains a matrix with a ligand chemically grafted on the nitrogen atom, which contains substituents R₁, R₂, R₃, R₄, wherein the nitrogen atom is attached to the matrix using an alkyl spacer R₅, or using a spacer containing an alkyl moiety R₅ with a fixed secondary, tertiary amino group or quaternary ammonium group, with which can be additionally connected identical or different spacers R₆, R₇, R₈, at least one of which contains a nitrogen atom, on which ligand is obtained. R₁-R₄ are H or alkyl C₁-C₈ alkyl fragment which can contain identical or different substitutes, including hydroxyl, carbonyl, carboxyl, ester and amino groups, R₅ is an alkyl fragment of C₁-C₁₄, which can contain various substitutes, including hydroxyl, carbonyl, carboxyl, ester and amino groups, R₆-R₈ identical or different, are H or an alkyl fragment of C₁-C₁₄, which may contain identical or different substitutes, including hydroxyl, carbonyl, carboxyl, ester and amino groups, wherein at least one of them is connected to nitrogen atom, on which substitutes R₁-R₄ are fixed. Method of producing sorbent is modification of aminated matrix by successive addition of carbonyl compound, isocyanide and organic acid to obtain ligand chemically grafted to nitrogen atom.

EFFECT: invention provides a simple, fast and well reproducible method of producing a hydrophilic sorbent, having high stability, selectivity and efficiency, as well as the possibility of varying selectivity in a wide range.

8 cl, 1 tbl, 11 ex, 5 dwg