PROCESS FOR THE PREPARATION OF DIALKYL TEREPHTHALATES FROM RECYCLE FEEDSTOCKS

PROCESS FOR THE PREPARATION OF DIALKYL TEREPHTHALATES FROM RECYCLE FEEDSTOCKS

A process for the preparation of a di(C6-21 alkyl) phthalate combining a recycle poly((C1-4 alkyl) terephthalate), a molar excess of a C6-21 alcohol relative to the poly(C1-4 alkyl) terephthalate), and a catalyst comprising sulfuric acid, a C1-30 sulfonic acid, a tetra(C1-6 alkyl) titanate, or a com...

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Bibliographische Detailangaben
Hauptverfasser: Nandy, Ritesh, Ganapathy Bhotla, Venkata Ramanarayanan, Patil, Prashant
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
COMPOSITIONS BASED THEREON
METALLURGY
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:A process for the preparation of a di(C6-21 alkyl) phthalate combining a recycle poly((C1-4 alkyl) terephthalate), a molar excess of a C6-21 alcohol relative to the poly(C1-4 alkyl) terephthalate), and a catalyst comprising sulfuric acid, a C1-30 sulfonic acid, a tetra(C1-6 alkyl) titanate, or a combination comprising at least one of the foregoing, to provide a reaction mixture; and heating the reaction mixture at a temperature greater than 130° C., under conditions effective to provide a product mixture comprising the di(C7-13 alkyl) terephthalate.