C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/133, 253/86
C10M 135/22 (2006.01) C10M 159/12 (2006.01) C10M 167/00 (2006.01) C10M 173/00 (2006.01)
Patent
CA 1296704
L-2350R Title: SULFUR-CONTAINING LUBRICANT AND FUNCTIONAL FLUID COMPOSITIONS Abstract of the Invention This invention is directed to lubricating and functional fluid compositions having improved antioxi- dant and extreme pressure properties and high tempera- ture stability. The lubricant and functional fluid compositions comprise a major amount of at least one oil of lubricating viscosity and a minor amount of (A) a sulfur compound characterized by the structural formula Image (I) wherein R1, R2, R3 and R4 are each independent- ly H or hydrocarbyl groups; R1 and/or R3 may be G1 or G2; R1 and R2 and/or R3 and R4 together may be alkylene groups containing about 4 to about 7 carbon atoms, G1 and G2 are each independently C(X)R, COOR, C?N, R5-C=NR6, CON(R)2 or NO2, and G1 also may be a CH2OH group, wherein X is O or S, R5 and each R are independently H or a hydrocarbyl group, R6 is H or a hydrocarbyl group; when both G1 and G2 are R5C=NR6, the two R6 groups together may be a hydrocarbylene group linking the two nitrogen atoms; when G1 is CH2OH; and G2 is COOR, a lactone may be formed by intramolecular combination of G1 and G2; and x is an integer from 1 to about 8; provided that when both G1 and G2 are C(O)R groups and R1 and R3 are H or hydrocarbyl groups, at least one R is a hydrocarbyl group. The lubricating compositions of the present invention are particularly useful as lubricating oils, functional fluids and greases. The invention also relates to aqueous systems containing the above- described sulfur compounds represented by Formula I.
551054
Di Biase Stephen A.
Pialet Joseph W.
Di Biase Stephen A.
Pialet Joseph W.
Ridout & Maybee Llp
The Lubrizol Corporation
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