| 摘要 |
Naphthalenedicarboxylic acid (NDA) particles excellent in fluidity in slurry state, which can be produced by heating a mixture comprising naphthalenedicarboxylic acid and/or ester, an alcohol and water to prepare a solution in water/alcohol, lowering the alcohol concentration of the solution to hydrolyze the ester, precipitating naphthalenedicarboxylic acid particles, and recovering the particles.
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