Recycling 2,6-naphthalenedicarboxylic acid (2,6-NDA) contained in polyethylene naphthalate in a process to produce diesters

Recycling 2,6-naphthalenedicarboxylic acid (2,6-NDA) contained in polyethylene naphthalate in a process to produce diesters

A process for preparing a dialkylester of a naphthalenedicarboxylic acid comprising directing a liquid phase reaction mixture comprising a low molecular weight alcohol, a naphthalenedicarboxylic acid, a dialkylester of a naphthalenedicarboxylic acid, and a polyethylene naphthalate containing materia...

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1. Verfasser: MCMAHON ROSEMARY F.,MACEK JOHN A.,HUSSMANN GREGORY P.,PANZER MICHAEL J.,EIFERT RAYMOND J.,YOUNG DAVID A.,MOSSMAN ALLEN B.,CLECKLER J. DEVEN
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Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator MCMAHON ROSEMARY F.,MACEK JOHN A.,HUSSMANN GREGORY P.,PANZER MICHAEL J.,EIFERT RAYMOND J.,YOUNG DAVID A.,MOSSMAN ALLEN B.,CLECKLER J. DEVEN
description A process for preparing a dialkylester of a naphthalenedicarboxylic acid comprising directing a liquid phase reaction mixture comprising a low molecular weight alcohol, a naphthalenedicarboxylic acid, a dialkylester of a naphthalenedicarboxylic acid, and a polyethylene naphthalate containing material, at a given temperature and pressure through series arranged reaction zones and subsequently removing a product comprising a dialkylester formed by the reaction of the naphthalenedicarboxylic acid and the polyethylene naphthalate containing material with the low molecular weight alcohol from a reaction zone. This invention is also directed to a process for preparing a purified dialkylester of a naphthalenedicarboxylic acid comprising a series of crystallization and distillation steps, and combinations thereof.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Recycling 2,6-naphthalenedicarboxylic acid (2,6-NDA) contained in polyethylene naphthalate in a process to produce diesters
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