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Potential synthetic lubricants: Esters of C 18 ‐saturated cyclic acids
Author(s) -
Friedrich J. P.,
Bell E. W.,
Gast L. E.
Publication year - 1965
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02541307
Subject(s) - cyclohexanol , chemistry , phenol , organic chemistry , melting point , decomposition , catalysis
A series of 16 esters of C 18 ‐saturated cyclic acids (HCal) were prepared, and partial evaluation showed that several have qualities that recommend them as potential low‐temp lubricants. Starting materials used were primary, straight, and branched chain alcohols C 4 舑C 7 ; perfluoro alcohols; phenol; cyclohexanol; and C 18 ‐saturated cyclic alcohols prepared from cyclic acids. Viscosities were measured at 蜢40, 100, and 210F. Their viscosity indexes ranged from 26 to 143. Pour points or melting points of the esters ranged from 蜢27 to 蜢96F. The oxidative stability of these esters measured at 347F according to a modification of the test method for military specification MIL‐L‐7808 was in nearly all cases equal or superior to the control bis‐2‐ethylhexyl sebacate. More severe oxidation tests showed the esters of HCal to be slower than the control in the development of acidic decomposition products.