Word: nylons
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Dates: during 1938-1938
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...Weco claims they absorb only 20% as much moisture and dry much more quickly than the natural variety. Developed by the late Du Pont Chemist W. H. Carothers, Fibre 66 in bristle form is called "Exton," is made by forcing through small openings a synthetic resin known as "nylon," thus producing filaments in much the same way that rayon is manufactured. Because diameter of the bristles can be regulated in production, definite standards of "hardness" can be maintained...