Word: marvinol
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Dates: during 1943-1943
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...inventors of the new plastic, called Marvinol, claim that it has two big advantages over natural rubber for inner tubes : 1) damaged tubes can be traded in and completely reclaimed (since the material is not vulcanized) ; 2) because they are completely impervious to air, Marvin ol tubes do not have to be repumped frequently, like rubber tubes (through which air seeps slowly). Marvinol tubes have so far been tested in 8,000 miles of passenger-car travel (they are not heat-resistant enough for heavy trucks) without needing any reinflation...
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