The reaction is an acid catalyzed carbocationic polymerization typically using aluminum chloride or hydrogen halide acid such as HF . So called " high reactivity " polybutene or PIB is produced using purified isobutylene feedstock and strong acid catalyst such as HF or HF with promoter.
22.
A Lewis acid such as zinc chloride ( ZnCl 2 ), iron ( III ) chloride ( FeCl 3 ), or aluminum chloride ( AlCl 3 ) coordinates to the halogen on the acid halide, activating the compound towards nucleophilic attack by an activated aromatic ring.
23.
This patent addressed the problem of the excessive acidity of aluminum chloride and its excessive irritation of the skin, by combining it with a soluble nitrile or a similar compound . " Stopette " gained its prominence as the first and long-time sponsor of the game show " What's My Line ? ", and was later eclipsed by many other brands as the 1941 patent expired.
24.
:: : Polystyrene is pretty chemically inert ( like most other plastics ), so I don't think it will react with chlorine or sodium hypochlorite ( at least, in the absence of a catalyst such as aluminum chloride ), much less in a way that releases deadly fumes . " At worst " the plastic might become chlorinated and further discolored, but even this is rather unlikely.
