The "Neoprene" AC is banded on a cool tight mill. The magnesium oxide is added first, then the stearic acid, antioxidant, and "Silene" EF, and the zinc oxide is added last. The total milling time should be no longer than 5 minutes. (Additional time of mastication will decrease viscosity of the adhesive and lower the initial adhesive strength.) This mixture is added to the toluene under agitation. The "Nevillac" Hard is added to the butyl acetate under agitation. The two solutions are then mixed.
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