NOVELTY - A polymeric reaction product prepared from a first monomer of biaryl compound and/or at least one second monomer having biaryl compound; a polymer of phenylene compound; and a polymer of phosphazine compound, are new.    USE - In a membrane such as an anion-conducting membrane (claimed) that is useful in fuel cells, membrane-based electrolyzers, and other chemical (e.g. anion-exchange resin and wastewater treatment) and electrochemical (such as salt splitting) processes.    ADVANTAGE - The polymer produces an anion-conducting membrane that is more stable to chemical degradation at high pH than prior art membranes; thus produces a robust-anion-conducting membrane.    DETAILED DESCRIPTION - A polymeric reaction product prepared from a first monomer of biaryl compound formula (I) and/or at least one second monomer having biaryl compound of formula (II) having at least 5 mole% of residue of formulae -R3-N(R4)-S+(N(R4)(R5))-N(R4)(R5) Q- (i), -R3-N(R4)-S(O)+(N(R4)(R5))-N(R4)(R5) Q- (ii), -R3-N(R4)-C+(N(R4)(R5))-N(R4)(R5) Q- (iii), -R3-N(R4)-P(N(R4)(R5))2(=N+(R5)(R6)) Q- (iv) or -R3-N(R4)-P(N(R4)(R5))2(=N-R5) (v); a polymer of formula -(Z-1,4-phenylene (substituted on 2, 3, 5 and 6 positions with R1, R2, A2 and A1 respectively))n- (III); and a polymer of phosphazine compound formula -(N=P(Z')-N=P(Z'))n- (IV), are new.    D=F, Cl, Br or I;    E=-SO2-, -C(O)- or -P(O)(aryl)-;    Z=a direct bond or -C(CX3)2-;    X=H or fluorine;    R1 and R2=H, 1-10C alkyl, 1-10C cycloalkyl, 1-10C alkenyl, 1-10C aryl, 1-10C aralkyl or 4-20C heterocyclic group;    R1+R2=-(CH2)2-, -(CH2)3-, -(CH2)4-, -(CH2)5-, -CH=CH- or -CH=CH-CH=CH-;    A1, A2, A3 and A4=H, 1-10C alkyl, 1-10C cycloalkyl, 1-10C alkenyl, 1-10C aryl, 1-10C aralkyl, 4-20C heterocyclic group or residue of formulae (i) - (v);    R3=a direct bond, -(CH2CH2)-, -(C6H4)-, -(CF2)2- or -(CH2)3-;    R4 and R5=1-10C alkyl, 1-10C cycloalkyl, 1-10C alkenyl, 1-10C aryl, 1-10C aralkyl or 4-20C heterocyclic group;    R4+R5=-(CH2)2-, -(CH2)3-, -(CH2)4-, -(CH2)5-, -CH=CH- or -CH=CH-CH=CH-;    R6=H, alkyl or cycloalkyl;    Q=anion;    n= greater than or equal to 3;    Z1=a direct bond, -O-, -S-, -SO2-, -C(CH3)2-, -C(CF3)2-, -C(O)-, -P(O)(aryl)- or phenyl;    Z'=NR1aR2a or N(=PZ'3);    R1a and R2a=1-10C alkyl, 1-10C partially fluorinated alkyl, or 1-10C fluorinated alkyl;    R1a+R2a=-(CH2)2-, -(CH2)3-, -(CH2)4-, -(CH2)5-, --CH=CH-, or -CH=CH-CH=CH-.    Provided that with the polymer of formula (III) comprises at least 1 wt.% the residue (i) - (v). INDEPENDENT CLAIMS are included for the following:    (1) a composition comprising a support and a salt embedded in the support. The salt is selected from salts of the formulae (i) - (v); and    (2) polymeric reaction product of water and the polymer of formula (III).