TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The aromatic tetra-amino compound is 3,3',4,4'-tetraaminobiphenyl, 2,3,5,6-tetraaminopyridine, 1,2,4,5- tetraaminobenzene, 3,3',4,4'-tetraaminodiphenylsulfone, 3,3',4,4'-tetraaminodiphenylether, 3,3',4,4'-tetraaminobenzophenone, 3,3',4,4'-tetraaminodiphenylmethane or 3,3',4,4'-tetraaminodiphenyldimethylmethane. The aromatic dicarboxylic acid is isophthalic acid, terephthalic acid, phthalic acid, 5-hydroxyisophthalic acid, 4-hydroxyisophthalic acid, 2-hydroxyterephthalic acid, 5-aminoisophthalic acid, 5-N,N-dimethylaminoisophthalic acid, 5-N,N-diethylaminoisophthalic acid, 2,5-dihydroxyterephthalic acid, 2,5-dihydroxyisophthalic acid, 2,3-dihydroxyisophthalic acid, 2,3-dihydroxyphthalic acid, 2,4-dihydroxyphthalic acid, 3,4-dihydroxyphthalic acid, 3-fluorophthalic acid, 5-fluoroisophthalic acid, 2-fluoroterephthalic acid, tetrafluorophthalic acid, tetrafluoroisophthalic acid, tetrafluoroterephthalic acid, 1,4-naphthalene dicarboxylic acid, 1,5-naphthalene dicarboxylic acid, 2,6-naphthalene dicarboxylic acid, 2,7-naphthalene dicarboxylic acid, diphenic acid, 1,8-dihydroxynaphthalen-3,6-dicarboxylic acid, diphenylether-4,4'-dicarboxylic acid, benzophenon-4,4'-dicarboxylic acid, diphenylsulfon-4,4'-dicarboxylic acid, biphenyl-4,4'-dicarboxylic acid, 4-trifluoromethylphthalic acid, 2,2-bis(4-carboxyphenyl)hexafluoropropane, 4,4'-stilbene dicarboxylic acid, 4-carboxy cinnamic acid, and/or its 1-20C-alkyl-ester, 5-12C-aryl-ester, acid anhydride or acid chloride.    TECHNOLOGY FOCUS - POLYMERS - Preferred Process: In step (ii), the concentration of polyphosphoric acid is less than 84.74%. In step (ii), the concentration of polyphosphoric acid in the mixture is reduced. In the step (ii), a solution in the form of a solution and/or dispersion comprises 0.5-30 wt.% of at least a polyazole with an intrinsic viscosity of 3-8 g/dL, measured in at least 96 wt.% of sulfuric acid, and 30-99.5 wt.% of orthophosphoric acid and/or polyphosphoric acid, where the concentration of the phosphoric acid and/or polyphosphoric acid is 70.5-75.45%. In step (i), 0.1-50 wt.% of the composition is added. In step (i), orthophosphoric acid is added. A tetra-amino compound and carboxylic acid compound in a non-equimolar ratio are produced in the step (i). In step (i), a monocarboxylic acid or its ester and/or monoamino compound is/are added. A part of the preparation of the polyazole comprises the manufacture of a proton conducting polymer membrane on basis of polyazole by carrying out the step (i), applying a layer on a carrier using the mixture, heating the obtained flat product/layer under inert gas at 350 degrees C, preferably up to 280 degrees C and treating the obtained membrane. The process provides polymer on the basis of polyazole with azole repeating units of formulae (I)-(XII).Ara, Ar5 = optionally a mono- or poly-cyclic quadrivalent (hetero)aryl group;Ar1, Ar6, Ar7, Ar11 = optionally mono- or poly-cyclic divalent (hetero)aryl group;Ar2, Ar9, Ar10 = optionally mono- or poly-cyclic di or trivalent (hetero)aryl group;Ar3, Ar4, Ar8 = optionally mono- or poly-cyclic trivalent (hetero)aryl group;X = O, S, amino, H, 1-20C-alkyl, 1-20C-alkoxy or aryl;R = H, alkyl or aryl; andn, m = greater than or equal to 0, preferably greater than or equal to 100. EXAMPLE - 3,3',4,4'-Tetraaminobiphenyl (22.53 g) and terephthalic acid (17.47 g) were mixed in a stoichiometric ratio and introduced in polyphosphoric acid (1960 g). The obtained mixture was heated at 240 degrees C to obtain a solution of poly(2,2'-(m-phenylene)-5,5'-bibenzimidazole).