National Distillers and Chemical Corporation

Joseph Cahill, Jr

Eugene G Harris

Herbert G Rodenberg

The catalytic thermal depolymerization of polyesters to produce macrocyclic esters suitable for fragrance applications is carried out using an olefin polymer. High yields of the corresponding macrocyclic ester are produced at high rates while substantially eliminating reactor fouling and the formation of undesirable by-products. The depolymerization is most advantageously conducted using polyethylene.

Process for the production of macrocyclic esters by the depolymerization

Dawsonite is a highly effective and useful catalyst for the thermal depolymerization of polyesters to produce macrocyclic compounds. High yields and enhanced rates of reaction are obtained using Dawsonite obtained from natural or synthetic sources.

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Ft. Mitchell, KY, United States of America

Joseph Cahill, Jr