Polyone Corporation

Polyone Coporation

Kebin Geng

Roger W Avakian

Stephen D Horton

Louis Dupont

A combination of catalysts is disclosed as useful to promote the transesterification reaction of an epoxidized soyate with a polyol to yield a high percentage of epoxidized soyate diester with epoxy functionality retained. The primary catalyst is a metallic hydroxide, and the secondary catalyst is a titanate. Bioderived plasticizers useful for thermoplastics and thermosets result.

Catalysts for esterification of epoxidized soyates and methods of using same

An unhindered polyol is used to react with an epoxidized soyate to make epoxidized soyate diester in the presence of a catalyst. The unhindered polyol can be 1,3-propanediol or any polyol having four or more carbon atoms with no two adjacent carbon atoms having hydroxyl functionality. Preferably, a combination of catalysts is used to promote the transesterification reaction of the epoxidized soyate with the unhindered polyol to yield a high percentage of epoxidized soyate diester with epoxy functionality retained. The primary catalyst is a metallic hydroxide, and the secondary catalyst is a titanate. Bioderived epoxidized soyate diester plasticizers useful for thermoplastics and thermosets result.

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Rocky River, OH, United States of America

Kebin Geng