PROCESS FOR MAKING AN ORGANIC CHARGE TRANSPORTING FILM
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United States of America Patent
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Jul 4, 2019
app pub date -
Jun 28, 2016
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Jun 28, 2016
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Abstract
A single liquid phase formulation useful for producing an organic charge transporting film. The formulation contains: (a) a polymer resin having Mw at least 3,000 and having arylmethoxy linkages; (b) an acid catalyst which is an organic Bronsted acid with pKa≤4; a Lewis acid comprising a positive aromatic ion and an anion which is (i) a tetraaryl borate having the formula (I) wherein R represents zero to five non-hydrogen substituents selected from D, F and CF3, (ii) BF4−, (iii) PF6−, (iv) SbF6−, (v) AsF6− or (vi) ClO4−; or a thermal acid generator.
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