Chemtura Corporation

Lanxess Solutions US Inc.

Robert Urrego

Dale D Carr

Edward T Hessell

Richard Kelley

Jeffrey Hutter

Travis Benanti

Lubricant compositions comprising certain mixtures of esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and higher pentaerythritol oligomers are ideally suited for use with COas refrigerant in heat transfer devices provided that at least 30% by weight of the esters are esters of pentaerythritol oligomers containing 4 or more pentaerythritol monomer units and wherein a majority of the alkylcarboxylate groups are straight chain Calkanoyl groups, such as n-pentanoyl. Said mixture of alkylcarboxylate esters are shown to not only have higher than expected viscosity and exceptional COmiscibility, but also possess excellent lubricity, film building properties and load bearing properties even as part of a lubricant/COsolution.

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Newington, CT, United States of America

Robert Urrego