Exxon Research and Engineering Company

Exxon Chemical Patents, Inc.

Thomas Lee Ashcraft, Jr

Paul Joseph Berlowitz

Richard Henry Schlosberg

Morton Beltzer

Max J Wisotsky

Dale D Carr

David Wayne Turner

Carolyn Boggus Duncan

Thomas G Schaefer

William Joseph Munley, Jr

A synthetic ester composition exhibiting low odor, and high thermal and oxidative stability which comprises the reaction product of: (a) a polyol which comprises at least dipentaerythritol, e.g., technical grade pentaerythritol and mixtures of technical grade pentaerythritol or dipentaerythritol and monopentaerythritol; and (b) a mixture of monocarboxylic acids comprising at least one linear acid selected from the group consisting of between C,-C,acids and at least one branched acid selected from the group consisting of C,-C,acids, wherein the amount of C,and C,acids is between about 20 to 45 weight %, based upon the total amount of said mixture of monocarboxylic acids, and wherein said synthetic ester composition has a viscosity of at least 4 cSt at 99&deg; C., a viscosity of less than about 8,000 cSt at 40&deg; C., and a pour point of at least as low as &minus;54&deg; C.

Reduced odor and high stability aircraft turbine oil base stock

An aviation turbine oil of reduced deposit forming tendencies and improved anti oxidancy is disclosed which comprises a major portion of a suitable aviation turbine oil base stock and a minor amount of a non-sulfur containing triazine derivative and trithiocyanuric acid, its substituted derivatives and mixture of such trithiocyanuric acid and its derivatives.

Additive combination to reduce deposit forming tendencies and improve

A synthetic ester base stock having reduced deposit formation which comprises the reaction product of technical pentaerythritol and a mixture of carboxylic acids. The mixture of carboxylic acids comprises (1) at least one C.sub.8 -C.sub.10 carboxylic acid having 6 or less reactive hydrogens, (2) at least one C.sub.5 -C.sub.7 carboxylic acid having 6 or less reactive hydrogens and (3) at least one C.sub.6 -C.sub.10 carboxylic acid having 6 or more reactive hydrogens.

Technical pentaerythritol esters as lubricant base stock

Growing community of inventors

Leander, TX, United States of America

Thomas Lee Ashcraft, Jr