CROSS-LINKED POLYMER COMPOSITIONS, GAS SEPARATING MEMBRANES MADE FROM SUCH CROSS-LINKED POLYMER COMPOSITIONS, METHODS OF MAKING SUCH MEMBRANES AND GAS SEPARATING METHODS USING SUCH MEMBRANES Russian patent published in 2019 - IPC C08L71/12 C08L101/02 B01D53/22 B01D71/52 B01D71/82 

FIELD: chemistry.

SUBSTANCE: present invention relates to compositions for gas distribution membranes. Composition for a gas separation membrane is described, where the composition includes at least one cross-linked polymer having a structure described by formula (I) -(A-O-B-O)_n-, A is selected from a group consisting of: -Ar₁-Q-Ar₂-, -Ar₁- and -Ar₁-Ar₂-; B is selected from a group consisting of: -Ar₁’-Q’-Ar₂’-, -Ar₁’- and -Ar₁’-Ar₂’-; each of Ar₁, Ar₂, Ar₁’ and Ar₂’ independently represents bivalent C₅-C₂₄ arylene or bivalent C₅-C₂₄ heterocyclic ring, and where arylene or heterocyclic ring are independently optionally substituted with at least one R¹ group; in each case when present R¹ independently selected from a group consisting of H, halo, -CN, -SO₃H or a salt thereof, -CO₂H or a salt thereof, -C₁-C₁₀ alkyl, -C₁-C₁₀ alkoxy, -C₁-C₁₀ haloalkyl, -C₁-C₁₀ haloalkoxy, phenyl and cyclohexyl, where the alkyl, phenyl and cyclohexyl groups are optionally substituted; or two or more R¹ groups can be bonded to each other to form a ring; or two R¹ groups may be covalently bonded to Y; Y is selected from a group consisting of -O-, -S-, -C(=O), -CH(OH)-, -S(=O)₂-, -Si(CH₃)₂-, -(CH₂)_p-, -(CF₂)_q-, -C(CH₃)₂-, -C(CF₃)₂- and -C(=O)NR¹-; each of Q and Q' is independently selected from a group consisting of -O-, -S-, -C(=O), -CH(OH)-, -S(=O)₂-, -Si(CH₃)₂-, -(CH₂)_p-, -(CF₂)_q-, -C(CH₃)₂-, -C(CF₃)₂-, -C(R¹)(R¹)-, C(=O)NH-, -P(=O)C₆H₅-, -C(CH₃)(CF₃)-, -C(=O)C₆H₄C(=O)-, -C(R¹)(R¹)-C₆H₄-C(R¹)(R¹)-, -phenyl(C₁-C₆)alkyl, -phenyl(C₁-C₆)haloalkyl, phenyl, cycloalkyl and heterocyclyl, wherein the phenyl, cycloalkyl and heterocyclyl groups are optionally substituted; or two R¹ groups in -C(R¹)(R¹) can be bonded to each other to form a ring, where the ring is optionally substituted; R is an integer ranging from 1 to 10; and q is an integer ranging from 1 to 10; where in at least one case of presence Ar₁, Ar₂, Ar₁' or Ar₂' are substituted with the R¹ group, comprising a benzyl hydrogen atom, and in at least one case of presence Q or Q′ includes a UV activator, where the UV activator is a carbonyl group; where the average molecular weight of the polymer is in the range of 10,000–400,000; and where the polymer comprises at least 2 meq/g of benzyl methyl, methylene or methine groups and at least 0.2 meq/g of UV activator. Also described is a membrane for separating or purifying a gas mixture containing said composition, and a method for producing same. Gas separation method is described, comprising: feeding a gas mixture to a gas distribution module, where the gas distribution module comprises said membrane.

EFFECT: obtaining a composition for a gas distribution membrane that improves its performance as a result of an increase in selectivity while maintaining cost-effective permeability values and high durability of the membrane.

41 cl, 28 dwg, 15 tbl, 17 ex