TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The nucleophile is an alkyl compound of formula (R2-A(R1)-R3), preferably trimethylamine, triethylamine, triisopropylamine, tri-n-butylamine, trimethylphosphine, triethylphosphine, triisopropylphosphine, tri-n-butylphosphine and/or triphenylphosphine. The monomer mixture comprises isoolefin monomer (80-95 wt.%, preferably 85-93 wt.%), multiolefin monomer (4-20 wt.%, preferably 6-15 wt.%) and/or beta-pinene and multiolefin cross-linking agent (0.01-1 wt.%). The isoolefin is isobutene, 2-methyl-1-butene, 3-methyl-1-butene, 2-methyl-2-butene and/or 4-methyl-1-pentene. The multiolefin is isoprene, butadiene, 2-methylbutadiene, 2,4-dimethylbutadiene, piperyline, 3-methyl-1,3-pentadiene, 2,4-hexadiene, 2-neopentylbutadiene, 2-methly-1,5-hexadiene, 2,5-dimethly-2,4-hexadiene, 2-methyl-1,4-pentadiene, 2-methyl-1,6-heptadiene, cyclopenta-diene, methylcyclopentadiene, cyclohexadiene and/or 1-vinyl-cyclohexadiene. The cross-linking agent is norbornadiene, 2-isopropenylnorbornene, 2-vinyl-norbornene, 1,3,5-hexatriene, 2-phenyl-1,3-butadiene, divinylbenzene, diisopropenylbenzene, divinyltoluene, divinylxylene or 1-20C alkyl-substituted derivatives. The high multiolefin butyl ionomer comprises 2-10 mol.%, preferably 4-7.5 mol.% of multiolefin. The peroxide is dialkylperoxide, ketalperoxide, aralkylperoxide, peroxide ether or and peroxide ester. The peroxide ester is di-tert.-butylperoxide, bis-(tert.-butylperoxyisopropyl)-benzol, dicumylperoxide, 2,5-dimethyl-2,5-di(tert.-butylperoxy)-hexane, 2,5-dimethyl-2,5-di(tert.-butylperoxy)-hexene-(3), 1,1-bis-(tert.-butylperoxy)-3,3,5-trimethyl-cyclohexane, benzoylperoxide, tert.- butylcumylperoxide or tert.-butylperbenzoate. The nanoclay is natural montmorillonite clay modified with a quaternary ammonium salt. The amount of nanoclay is 1-50 wt.%. (I) further comprises at least one filler.A = N or P; andR1-R3 = 1-18C alkyl, aryl (monocyclic or composed of fused 4-8C rings) or hetero atom of B, N, O, Si, P or S.Preferred Process: The high multiolefin butyl polymer is halogenated with bromine or chloride. EXAMPLE - Rubber ionomer (high isoprene isobutylene ionomer, 100 phr) was introduced into an internal mixer (with a capacity of 75 g) and operated at 30degreesC with a rotor speed of 60 rpm. After 2 minutes of mixing, Cloisite 15A (RTM: Nanoclay product) was added into the mixer. After 10 minutes of mixing, HVA-2 (RTM: Curing agent, N,N'-meta-phenylene bismaleimide) (2 phr) and DiCup 40C (RTM: Dicumyl peroxide) (4 phr) were added and mixed for an additional 5 minutes. After mixing, the compound was removed from the mixer and refined to give the peroxide curable rubber compound.