Abstract:
LUBRICANT ADDITIVE COMPOUNDS ARE DISCLOSED HAVING THE FORMULA:
R-O-P(=S)(-O-R'')-S-M-S-P(=S)(-O-R")-O-R''"
WHEREIN EACH OF SAID R, R'', R" AND R"'' GROUPS IS AN ALKYL GROUP CONTAINING FROM 2 TO 20 CARBON ATOMS AT LEAST ONE OF THEM CONTAINING A-CCL3 GROUP AND M IS CALCIUM, BARIUM, COPPER, LEAD, NICKEL, COBALT, SILVER, ANTIMONY OR TIN. THEIR PREPARATION IS ALSO DESCRIBED.
Abstract:
A mineral or synthetic lubricating oil is protected against oxidation by dissolving therein, at a temperature not higher than 80 DEG C, a 3-aza-6a-thio-thiophthene or a 3,4-diaza-6a-thio-thiophthene represented by the general formulae: wherein, R, R1 and R2, the same or different, represent hydrogen, alkyl, cycloalkyl, aryl, alkylaryl, arylalkyl or aminoaryl.
Abstract:
This invention relates to esters prepared by reacting A. A MIXTURE OF TRI-, TETRA- AND HEXAFUNCTIONAL POLYOLS IN WHICH THE MOLAR RATIO OF THE TRIFUNCTIONAL POLYOL TO THE OTHER POLYOLS IS FROM ABOUT 0.5:1 TO 10:1 AND IN WHICH THE MOLAR RATIO OF THE HEXAFUNCTIONAL POLYOL TO THE TETRAFUNCTIONAL POLYOL IS FROM ABOUT 0 TO 1.2:
Abstract:
An ester, adapted for use as a component of a multigrade lubricating oil, is prepared by reacting: A. A mixture of bifunctional and trifunctional polyols wherein the molar ratio of the bifunctional polyols to the trifunctional polyols is in the range of 1:2.5 to 1:10; and B. A mixture of linear monocarboxylic acids containing from 6 to 8 carbon atoms, wherein the molar average is C7, and of linear monocarboxylic acids containing from 12 to 18 carbon atoms, the molar ratio of the C6 to C8 acids and the C12 to C18 acids being in the range of from 4:1 to 19:1.
Abstract:
An ester, adapted for use as a component of a multigrade lubricating oil, is prepared by reacting: A. A mixture of bifunctional and trifunctional polyols wherein the molar ratio of the bifunctional polyols to the trifunctional polyols is in the range of 1:2.5 to 1:10; and B. A mixture of linear monocarboxylic acids containing from 6 to 8 carbon atoms, wherein the molar average is C7, and of linear monocarboxylic acids containing from 12 to 18 carbon atoms, the molar ratio of the C6 to C8 acids and the C12 to C18 acids being in the range of from 4:1 to 19:1.
Abstract:
A composition comprising a poly-alkyleneglycol is stablized against molecular degradation and viscosity loss at elevated temperatures by about 0.1 to about 10% by weight of an arylhydroquinone such as p-acetylphenylhydroquinone.