Exxon Chemical Patents, Inc.

Leonard G Krauskopf

Richard Henry Schlosberg

Paul Hamden Daniels

Larry O Jones

Francisco M Benitez

Konstantinos R Rigopoulos

John R Hooton

James D Gerald

A process for the formation of esters from at least one phthalic anhydride residue stream produced from the vapor phase oxidation of o-xylene, naphthalene and/or the like which comprises: (a) adding a phthalic anhydride residue stream and a mono-alcohol to a reaction vessel to form a reaction mixture; and (b) heating the reaction mixture and maintaining a pressure sufficient to obtain boiling of the reaction mixture thereby converting any acid and/or anhydride components of the phthalic anhydride residue stream to an ester.

Preparation of plasticizer esters from phthalic anhydride residue

Plasticized PVC compositions are disclosed which are heat resistant and which exhibit low smoke generation where the plasticizer is a pentaerythritol ester of mixed C.sub.5, C.sub.7 and C.sub.9 alkanoic acids.

Polyol ester PVC plasticizers

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Baton Rouge, LA, United States of America

Leonard G Krauskopf