Method for producing thermoplastic aromatic polysulfone resin, method for producing epoxy composition, and method for producing cured epoxy product
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United States of America Patent
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Dec 22, 2020
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Dec 6, 2018
app pub date -
Sep 14, 2016
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Dec 2, 2015
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Abstract
The present invention relates to a method for producing thermoplastic aromatic polysulfone resin, in which a polymerization reaction is performed in an organic solvent by using compound (A), a dihalogeno compound represented by Formula (I), compound (B), a divalent phenol represented by Formula (II), and compound (C), an alkali metal carbonate, at a charging molar ratio satisfying the following Formulae (1) to (3): (1) 0.900<(A)/(B)<0.990; (2) {(A)/(B)}−0.02<(C)/(B)<{(A)/(B)}+0.01; and (3) (C)/(B)<1.00,
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