Esters from branched-chain acids and neopentylpolyols and phenols as basic fluids for synthetic lubricants

Conference · Wed Aug 01 04:00:00 EDT 1979 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:5747432

Chao, T S; Kjonaas, M; DeJovine, J

Esters of straight chain carboxylic acids with neopentylpolyols such as pentaerythritol (PE), dipentaerythritol (diPE) and trimethylolpropane (TMP) are widely used as base fluids for Type 1 1/2 and Type 2 lubricants for aircraft gas turbine engines. Lubricants of even greater stability than Type 2 are required for advanced aircraft engines such as those equipped for supersonic transports. Research and development has been carried out to search for lubricants which have better high temperature characteristics than Type 2 lubricants but are less expensive than Type 3 lubricants. This paper describes some of the efforts made in our laboratory toward the development of what can be called Type 2 1/2 lubricants which involved both base oil and additive studies. For the base oil our effort was concentrated on the development of branched chain acid esters of neopentylpolyols and phenolic compounds. The branched chain acids studied included neoacids, e.g., 2,2-dimethylpentanoic acid, gem-dimethyl acids, e.g., 3,3-dimethylpentanoic acid, and acids containing single branching, such as 2-ethylhexanoic acid. The phenols included resorcinol, dihydroxybiphenyls, dihydroxybenzophenones, etc. The esters were evaluated as base fluids based on their physical characteristics and oxidative resistance as determined by oxygen absorption testing.

• Research Organization: ARCO Petroleum Products Co., Harvey, IL
• OSTI ID: 5747432
• Report Number(s): CONF-790917-(Vol.24)(No.3)
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 24:3
• Country of Publication: United States
• Language: English

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ADDITIVES
AIRCRAFT
ALKYL RADICALS
AROMATICS
ESTERS
FUELS
HIGH TEMPERATURE
HYDROXY COMPOUNDS
LUBRICANTS
LUBRICATING OILS
OPTIMIZATION
ORGANIC COMPOUNDS
PENTYL RADICALS
PETROLEUM PRODUCTS
PHENOLS
RADICALS
SYNTHESIS
SYNTHETIC FUELS
SYNTHETIC PETROLEUM
TEMPERATURE EFFECTS