Technical pentaerythritol esters as lubricant base stock

A synthetic ester base stock having reduced deposit formation which comprises the reaction product of technical pentaerythritol (a mixture of mono-and-di-pentaerythritol) and a mixture of carboxylic acids. The mixture of carboxylic acids comprises specified mole percentages of (1) at least one C8-C1...

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Bibliographic Details
Main Authors WISOTSKY, MAX JAY, ASHCRAFT, THOMAS LEE, BERLOWITZ, PAUL JOSEPH, SCHAEFER, THOMAS GEORGE, CARR, DALE DUANE
Format Patent
LanguageEnglish
French
German
Published 19.12.2001
Edition7
Subjects
CHEMISTRY
FUELS
INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:A synthetic ester base stock having reduced deposit formation which comprises the reaction product of technical pentaerythritol (a mixture of mono-and-di-pentaerythritol) and a mixture of carboxylic acids. The mixture of carboxylic acids comprises specified mole percentages of (1) at least one C8-C10 carboxylic acid having 6 or less reactive hydrogens, (2) at least one C5-C7 carboxylic acid having 6 or less reactive hydrogens and (3) at least one C6-C10 carboxylic acid having 6 or more reactive hydrogens. The ester product has 6.0 or below gram-atoms reactive hydrogen per 100g ester; and has viscosity and pour point properties meeting the U.S. MIL-L-23699 specification.
Bibliography:Application Number: EP19950305170