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AssigneeThe Goodyear Tire & Rubber Company
InventorsHarry Samuel Custer, Robert Charles Schisler
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A flexible elastomeric cover particularly for an electrolytic cell of the mercury type. The cover has at least one layer comprised of a corrosion resistant elastomeric composition including a vulcanized rubbery polymer to resist deleterious fluids and a multiplicity of small, non-porous, inert particles of a plate-like structure dispersed throughout the polymer to further resist the permeation and penetration of such fluids into the cover with the preponderance of the particles having an aspect ratio of at least 20:1 and being oriented in a direction generally parallel to a surface of the cover to provide a barrier to the migration of such deleterious fluids. The rubbery polymer is preferably polyisoprene and the plate-like or platy particles are preferably graphite or glass flakes.
In an electrolytic cell for the production of halides, a flexible elastomeric cover for said cell, said cover having at least one layer comprised of a corrosion resistant elastomeric composition including a vulcanized rubbery polymer to resist deleterious fluids and a multiplicity of small, non-porous, inert particles of a plate-like structure dispersed throughout said polymer to further resist the permeation and penetration of such deleterious fluids into the cover with the preponderance of said particles having an aspect ratio of at least 20:1 and being oriented in a direction generally parallel to a surface of the cover to provide a barrier to the migration of such deleterious fluids.
In an electrolytic chlorine cell of the mercury type comprising in combination a container suitable for containing a brine solution, anodes and cathodes positioned to contact the brine solution and through which a sufficient electrical potential may be applied to electrolyze the brine solution, thereby forming chlorine gas at the anodes, said anodes being supported outside said container and extending therein, a flexible fluid tight cover sealing the top of the cell through which the anodes extend, said cover having at least one layer comprised of a corrosion resistant elastomeric compound of intermediate hardness including a vulcanized rubbery polymer resistant to the hot wet chlorine atmosphere originating within the cell, the improvement wherein said compound includes 5 to 50 percent by weight of a filler of dense, inert, platy particles of micron size to further resist the permeation and penetration of chlorine gases into the cover, the preponderance of said platy particles having an aspect ratio of at least 20:1 and being aligned in a direction generally parallel to a surface of the cover to provide a barrier to the migration of chlorine gases into the cover.
Dependencies are inferred from the claim text.