Chemtura Corporation

Lanxess Solutions US Inc.

Lanxess Corporation

Roberto Urrego

Edward T Hessell

Dale D Carr

Jeffrey Hutter

Richard Kelley

Travis Benanti

Dale Carr

Edward Hessell

Ed Hessell

High viscosity working fluids comprising a fluorinated olefin refrigerant, such as a hydrofluoro-olefin refrigerant, and a high viscosity polyol ester comprising a select mixture of alkylcarboxy esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and pentaerythritol oligomers are provided.

Working fluids comprising fluorinated olefins and polyol esters

Working fluids comprising a refrigerant blend comprising a fluorinated alkane and a fluorinated olefin refrigerant, and a polyol ester lubricant composition comprising a mixture of alkylcarboxy esters of mono-pentaerythritol, di-pentaerythritol, tri-pentaerythritol and pentaerythritol oligomers, wherein at least 10 wt % of all polyol esters are esters of pentaerythritol oligomers of 4 or more pentaerythritol monomer groups.

Working fluids comprising fluorinated olefins/fluorinated saturated hydrocarbon blends and polyol esters

A poly(neopentylpolyol) ester composition is produced by reacting a neopentylpolyol having the formula: wherein each R is independently selected from the group consisting of CH, CHand CHOH and n is a number from 1 to 4, with at least one monocarboxylic acid having 2 to 15 carbon atoms in the presence of an acid catalyst and at an initial mole ratio of carboxyl groups to hydroxyl groups of greater than 0.5:1 to 0.95:1 to form a partially esterified poly(neopentylpolyol) composition. Then the partially esterified poly(neopentylpolyol) composition is reacted with additional monocarboxylic acid having 2 to 15 carbon atoms to form a final poly(neopentylpolyol) ester composition.

Production of polyol ester lubricants for refrigeration systems

Polyol ester lubricant compositions comprising predominately straight chain Calkylcarboxlate esters of neopentyl alcohols, for example, straight chain Calkylcarboxlate esters of one or more of trimethylol propane, pentaerythritol, di-pentaerythritol, tri-pentaerythritol or pentaerythritol oligomers, and working fluids comprising said lubricant compositions and a hydrocarbon refrigerant, suitable for heat transfer devices including refrigeration and air conditioning systems are provided. The polyol ester lubricant compositions have a kinematic viscosity at 40&#xb0; C. of 22-125 cSt and a viscosity index of greater than 140, and are characterized by having very high lubricity, excellent load carrying properties and excellent low temperature properties.

Refrigeration oil and compositions with hydrocarbon refrigerants

A polyol ester suitable for use as a lubricant or a lubricant base stock has a kinematic viscosity at 40&#xb0; C. greater than or equal to 200 cSt and a viscosity index of greater than or equal to 100. The ester comprises the reaction product of (a) a polyhydric alcohol component comprising at least 50 mole % of penterythritol, and (b) a carboxylic acid component comprising:

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Newington, CT, United States of America

Roberto Urrego