PROCESS FOR PREPARATION OF CYCLOHEXANEDICARBOXYLIC ACID

PROCESS FOR PREPARATION OF CYCLOHEXANEDICARBOXYLIC ACID

A process for preparation of 1,3- or 1,4-cyclohexanedicarboxylic acid comprising (A) preparing a solution comprised of the disodium salt of terephthalic acid or isophthalic acid and water, (B) continuously preparing the disodium salt of 1,3- or 1,4-cyclohexanedicarboxylic acid by continuously contac...

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Hauptverfasser: COOK, STEVEN, LEROY, MOOREHOUSE, CRISPEN, SYDNEY, IRICK, GETHER, JR
Format: Patent
Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator COOK, STEVEN, LEROY
MOOREHOUSE, CRISPEN, SYDNEY
IRICK, GETHER, JR
description A process for preparation of 1,3- or 1,4-cyclohexanedicarboxylic acid comprising (A) preparing a solution comprised of the disodium salt of terephthalic acid or isophthalic acid and water, (B) continuously preparing the disodium salt of 1,3- or 1,4-cyclohexanedicarboxylic acid by continuously contacting the solution with hydrogen and the combination of ruthenium metal and a carbon support in a packed column, (C) preparing 1,3- or 1,4-cyclohexanedicarboxylic acid by contacting the disodium salt of 1,3- or 1,4-cyclohexanedicarboxylic acid with sulfuric acid or hydrochloric acid, and (D) recovering the 1,3- or 1,4-cyclohexanedicarboxylic acid by crystallization of the 1,3- or 1,4-cyclohexanedicarboxylic acid.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title PROCESS FOR PREPARATION OF CYCLOHEXANEDICARBOXYLIC ACID
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