Abstract:
A lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants comprises an antioxidant selected from aromatic and alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and a secondary amine of the formula: ##STR1## wherein R and R' are aliphatic radicals. Lubricating oil compositions containing this additive composition are also disclosed.
Abstract:
A lubricating oil additive composition which imparts improved oxidation properties to crankcase lubricants comprises an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and a tertiary amine of the formula (R).sub.3 N wherein each R is independently C.sub.3 -C.sub.10 alkyl, phenyl or phenyl substituted by 1 or 2 alkyl groups of up to 12 carbon atoms. Lubricating oil compositions containing this additive composition are also disclosed.
Abstract:
A lubricating oil additive composition which imparts improved oxidation properties to lubricants and industrial oils comprises an antioxidant selected from oil-soluble, sterically hindered phenols or thiophenols, oil-soluble aromatic amines and organic sulfur compounds containing from 3 to 40 weight percent sulfur which is present within the compound as an organic sulfide or polysulfide or mixtures thereof, and a phosphorus-containing composition prepared by reacting phosphorus oxychloride or phosphorus thiochloride with a 1,2-substituted imidazoline in which the 1-substituent is hydroxyalkyl of 1 to 10 carbon atoms and the 2-substituent is an aliphatic hydrocarbon of 6 to 24 carbon atoms or an oil-soluble N-aliphatic-substituted amino alkylene amide of a higher fatty acid containing 6 to 24 carbon atoms and containing a terminal hydroxy group in the aliphatic substituent, said alkylene group containing from 2 to 5 carbon atoms and said aliphatic radical containing 1 to 10 carbon atoms, or mixtures thereof, the weight ratio of antioxidant to phosphorus-containing compound being 1:0.001-21. Compositions containing this antioxidant additive composition preferably contain from 2 to 40 millimols of zinc per kilogram present as an cil-soluble salt.
Abstract:
Wax-flux compositions for use in low-temperature soldering processes comprise (A) a major amount of a wax and (B) an effective amount to cause fluxing, at or below the soldering temperature of the piece to be soldered, of a wax-soluble product obtained by first reacting an aliphatic hydrocarbon-substituted succinic acid or derivative thereof which is capable of forming carboximide bonds with an alkylene polyamine to form a carboximide and then reacting said carboximide with an alkylaryl sulfonic acid. A process for soldering electrical components to a printed circuit board comprises (A) applying a molten wax-flux composition as described above to the metal pattern side of the board, (B) allowing the wax-flux composition to solidify, (C) trimming the components leads, and (D) soldering the components to the printed circuit board.