PARA-TERT-BUTYL-CALIX[6]ARENES, CONTAINING THREE ACID FUNCTIONAL GROUPS IN POSITIONS 2, 4 AND 3, LIQUID MEMBRANES DEPOSITED ON SUBSTRATE, SUBSTRATE MATERIALS CONTAINING SAID MEMBRANES AND USE THEREOF Russian patent published in 2011 - IPC C07C59/72 B01D15/08 C07C259/10 C08F8/00 C07C259/06 C22B60/02 C22B60/04 

FIELD: chemistry.

SUBSTANCE: present invention relates to substrate material for complex formation and selective extraction of americium, plutonium, uranium or thorium in their cationic form, which is para-tert-butyl-calix[6]arene of formula (IIA), where R'₁ R'₃ and R'₅, which are identical or different, each separately denotes: (i) a linear or branched C_1-6alkyl deposited on a substrate, wherein one of the groups R'₁ R'₃ and R'₅ in the compound of formula (IIA) is a group (ii); (ii) spacer-substrate, where the space is a divalent radical selected from a group comprising aryl(C_1-6alkyl)aryl; and the substrate is selected from a substrate which is a copolymer of chloro- or bromo-methylstyrene and divinylbenzene. The invention also relates to a liquid membrane deposited on a substrate for complex formation or selective extraction of americium, plutonium, uranium or thorium in their cationic form, containing para-tert-butyl-calix[6]arene of formula (IA) or (IB), which is dissolved in an organic solvent, having boiling point higher than 60°C and absorbed on a substrate, which is epoxy resin, where R₁, R₃ and R₅, which are identical or different, each separately denotes: (i) a hydrogen atom, (ii) a linear or branched C_1-6alkyl.

EFFECT: obtaining novel materials.

7 cl, 8 ex, 2 tbl