Hatco Corporation

Lanxess Solutions US Inc.

Royal Lubricants, Inc.

Jeffrey A Hutter

Dale D Carr

Edward T Hessell

Roberto Urrego

Richard Kelley

Michael A McHenry

Thomas G Schaefer

Improved synthetic lubricants based on a 100% polyol ester composition suitable for use in high temperature static chain oil applications is provided. The lubricant includes a base stock based on a polyol ester that is the reaction product of a neopentyl polyol including a major proportion of dipentaerythritol and a mixture of C to C carboxylic acids. The preferred carboxylic acid mixture includes heptanoic (C ) acid, caprylic/capric (C ) acid and isononanoic (3, 5, 5-trimethylhyxanoic acid (iso-C ). The polyol base stock is mixed with an additive package that includes a viscosity index improver (tackifier), antioxidants, extreme pressure/antiwear agents and a corrosion inhibitor. The additive package may be added in up to about 20 percent by weight of the lubricant to provide a viscosity of the lubricant at 40&deg; C. of at least about 275 cSt and at 100&deg; C. of no less than about 25.0 cSt.

High temperature lubricant composition

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Hillside, NJ, United States of America

Jeffrey A Hutter