摘要:
Lubricants are stabilized against wear and corrosion by adding an additive amount of a novel substituted thiadiazole. These are derived from 2,5-dimercapto-1,3,4-thiadiazole and other moieties, as for example, an isocyanate moiety.
摘要:
The addition of a 2-mercaptobenzamide to cutting fluid prevents bacterial and fungal growth.Concentrated solutions thereof in certain organic solvents are also disclosed. One such solution provides additional protection against corrosion of the metal surfaces.
摘要:
Sulfurized compositions are prepared by the reaction of unsaturated compounds and a mixture of sulfur and hydrogen sulfide under superatmospheric pressure, followed by removal of low boiling materials. They are useful as lubricant additives.
摘要:
Lubricating oil containing a sulfurized dihydroxy benzene of formula ##STR1## WHERE N IS 1 TO 4, M IS 1 TO 3 AND R is an alkyl group containing at least 7 carbon atoms. These compounds impart anti-rust and anti-oxidancy to the oil with reduced copper corrosion.
摘要:
A lubricating oil additive composition which imparts improved oxidaton 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 primary amine of the formula: ##STR1## wherein each A is independently hydrogen or alkyl, R is alkyl or alkenyl of at least 6 carbon atoms, R.sup.1 is an alkyl group of at least 2 carbon atoms, x is an integer from 2 to 4, y is 1 to 4, and Het forms with the N atom, a 5- or 6-membered heterocyclic ring optionally containing an additional N or O hetero atom. Lubricating oil compositions containing this additive composition are also disclosed. Zn dithiophosphates may, also, be used in the additive composition.
摘要:
Lubricating oil additives comprising a class of sulfurized mixtures of fatty acid mono esters and olefins are provided, which have the properties of extreme pressure lubrication, stability and noncorrosivity towards copper.
摘要:
THE PRESENT INVENTION PROVIDES WATER BASES DRILLING FLUIDS HAVING ENHANCED LUBRICATING PROPERTIES UNDER LOW LOAD, NON-EXTREME PRESSURE CONDITIONS BY INCORPORATING THEREIN A MATERIAL SELECTED FROM THE GROUP CONSISTING OF VEGETABLE OILS, ANIMAL FATS, FATTY ACIDS, FATTY ACID ESTERS, FATTY AMIDES, THEIR SULFURIZED OR SULFATE REACTION PRODUCTS, AND MIXTURES THEREOF, AND A WATER INSOLUBEL ALCOHOL HAVING FROM FOUR TO FIFTEEN CARBON ATOMS. ANOTHER ASPECT OF THE INVENTION PROVIDES A NOVEL LUBRICATING COMPOSITION AND PROCESS FOR SYNERGISTICALLY INCREASING THE LUBRICITY OF WATER BASE DRILLING FLUIDS AND THE LIKE.