SULPHONATED POLY(ARYLENES) AS HYDROLYTICALLY AND THERMAL-OXIDATIVE STABLE POLYMERS Russian patent published in 2011 - IPC C08G75/20 C08L81/06 

FIELD: chemistry.

SUBSTANCE: present invention relates to sulphonated polyarylenes, synthesis thereof and use in membranes, fuel cells, electrodialysis, moistening and drying gases or for protection from electromagnetic radiation. The disclosed sulphonated polyarylenes contain one or more structural links of general formula -X-Ar(SO₃M)_n-Y-, where X and Y are selected from -SO₂-, -SO-, -SO₂O-, -CO-, -COO-, -CONH-, -CONR- and -POR-, Ar is selected from phenylene, naphthylene, anthracene, phenanthrene, biphenylene, furan, thiophene, pyrrole, thiazole, triazole, pyridine, imidazole and benzimidazole which, besides the sulphonic acid group and substitutes X and Y, may have substitutes which are not electron-donor groups, M is selected from Li⁺, Na⁺, K⁺, NR₄ ⁺, PR₄ ⁺ and H⁺, and n is an integer from 1 to 4, R is an alkyl which contains exclusively repeating units of formulae -[Ar₁(SO₃M)_n-X-]- and -[Ar₂(SO₃M)_n-Y-]-, where Ar₁ and Ar₂ deote an aromatic or heteroaromatic cyclic system with 5-18 ring atoms as defined above for Ar, M and n are as described above.

EFFECT: obtaining novel sulphonated polyarylenes and products based thereon.

24 cl, 23 dwg, 11 ex