PROCESS FOR MAKING AN ORGANIC CHARGE TRANSPORTING FILM
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United States of America Patent
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Jul 4, 2019
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Jun 28, 2016
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Jun 28, 2016
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A method for producing an organic charge transporting film. The method comprises steps of: (a) applying to a substrate a first polymer resin which has substituents which are sulfonic acids, sulfonic acid salts or esters of sulfonic acids; and (b) applying over the first polymer resin a second polymer resin having Mw at least 3,000 and comprising arylmethoxy linkages.
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