Bp Corporation North America Inc.

Michael J Panzer

Allen B Mossman

Gregory P Hussmann

David A Young

Rosemary F McMahon

John A Macek

Raymond J Eifert

J Deven Cleckler

Rosemary F Mcmahon

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.

Recycling polyethylene naphthalate containing materials in a process to produce diesters

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Lockport, IL, United States of America

Michael J Panzer