摘要:
PCT No. PCT/EP96/02269 Sec. 371 Date Oct. 14, 1997 Sec. 102(e) Date Oct. 14, 1997 PCT Filed May 22, 1996 PCT Pub. No. WO96/39478 PCT Pub. Date Dec. 12, 1996Synthetic lubricating oils for use in lubricating internal combustion engines, having good compatibility with elastomeric seals and good stability, but without making use of organic acid ester basestocks, comprise a synthetic basestock such as polyalphaolefin oligomers, an additive package comprising a hydrocarbyl substituted dicarboxylic acid or anhydride in which the hydrocarbyl group has a number average molecular weight (+E,ovs M+EE n) of from 700 to 5000 and a viscosity modifier.
摘要:
Novel ammonium salts of organo-oxyphosphorus acids, organo-thiophosphorus acids and their esters and to the use thereof as additives for lubricants, especially for providing protection against extreme pressure and corrosion, to compositions containing these novel salts, a method for lubricating metal surfaces in frictional contact, and a metal surface treated with the salt or lubricant composition.
摘要:
The present invention relates to an adduct of a hydrocarbon and a vicinal polycarbonyl compound, the adduct having a value of n greater than 1, wherein n is the average number of vicinal polycarbonyl compounds incorporated per adduct chain. The hydrocarbon is typically a saturated or unsaturated hydrocarbon or hydrocarbon polymer with an Mn value ranging from about 200 to about 10 million. The hydrocarbon optionally contains polar substituents. The VP compound is cyclic or acyclic. The adduct is an ene adduct or a radical adduct. The adduct can be further reacted with a reagent to obtain a product, wherein the reagent is selected from the group consisting of nucleophiles, electrophiles, metal salts and metal complexes. The reagent can be selected from (i) nucleophiles selected from the group consisting of amines, hydrazines, hydrazine derivatives, alcohols, water, polyamines, polyols, amino alcohols, amino thiols; (ii) electrophiles selected from the group consisting of carboxy anhydrides, carboxy esters, borate esters, phosphite and phosphate esters; (iii) metal salts containing metal ions selected from the group consisting of alkali metals, alkaline earth metals, and transition metals; and (iv) metal complexes containing metal ions selected from the group consisting of alkali metals, alkaline earth metals, and transition metals. The product obtained from the above-described adduct can be post-treated with an electrophilic reagent such as a borating, acylating or thio acid reagent, or a metal ion to obtain a post-product. The present invention further relates to oleaginous compositions comprising a major amount of an oleaginous substance selected from fuels and oils and a minor amount of the product, the post-product or the adduct per se with n > 1, as described above. The present invention also includes oleaginous compositions comprising a major amount of an oleaginous substance selected from fuels and oils and a minor amount of an adduct having n = 1, the adduct optionally reacted with a reagent selected from nucleophiles, electrophiles, metal salts and metal complexes.
摘要:
The antiwear properties of synthetic ester lubricants intended for use at high temperatures (150 DEG C. to 350 DEG C.) are improved by adding to the lubricants a hydrocarbon insoluble, synthetic ester soluble, aryl diphosphate ester composition containing a major amount of an aryl diphosphate ester of the formula: wherein Ar is unsubstituted or alkyl (C1-C12) substituted arylene and R is unsubstituted or alkyl (C1-C12) substituted aryl.
摘要:
A high quality lubricant for heavy duty service air conditioner and refrigerator compressors, especially those using chlorine free hydrofluorocarbon refrigerant working fluids, is provided by mixed esters of hindered polyols, most desirably di-pentaerythritol, usually mixed with some pentaerythritol, with a mixture of carboxylic acids including at least some of each of iso-pentanoic acid and iso-nonanoic acid.
摘要:
An antioxidant composition suitable for ester fluid lubricants is the reaction product of diphenylamine and N-aryl naphthylamine in the presence of an organic peroxide. The mole ratio of diphenylamine:N-aryl naphthylamine is about 1:1 to about 10:1. This results in more oligomeric reaction products and significantly less unreacted monomeric residual reactants. The resultant product composition comprises DPA homo-oligomers and DPA-NPA cross oligomers. The diphenylamine and N-aryl naphthylamine are desirably substituted with alkyl groups having from 1 to 20 carbon atoms or styryl groups. The reaction temperature is preferably about 130° to about 150° C. Controlled reaction conditions allow the use of solvents with extractable hydrogen atoms without producing significant amounts of dehydrocondensation between the solvent and the diamines. The reaction products have superior oxidative resistance in the Oxidation Corrosion Stability Test (OCS) and Vapor Phase Coker Test over dehydrocondensation products produced under other conditions and are useful in lubricant composition, especially in synthetic ester fluid lubricants such as turbine engine oils.
摘要:
A power transmission fluid composition which has, on a weight basis, an oil-soluble boron content of 0.001 to 0.1%, an oil-soluble phosphorus content of 0.005 to 0.2% and an oil-soluble metal content as metal-containing additive of no more than about 100 ppm and which comprises the following components:
a) at least about 70 wt% based on the total weight of the composition of an hydrogenated poly-α-olefin oligomer fluid having a kinematic viscosity of 2x10 -6 to 6x10 -6 m 2 /s (2 to 6 cSt) at 100°C; b) on an active ingredient basis, 2 to 20 wt% based on the total weight of the composition of an acrylic viscosity index improver which is in the form of a solution with an inert solvent; c) 4 to 25 wt% based on the total weight of the composition of an oil-soluble dialkyl ester of a C 4 to C 14 α,ω-dicarboxylic acid having a pour point of -45°C or lower; d) a dispersant amount of an oil-soluble ashless dispersant; e) a friction modifying amount an oil-soluble friction modifier; and f) an oil-soluble inhibitor selected from foam inhibitors, copper corrosion inhibitors, rust inhibitors and oxidation inhibitors; with the proviso that the power transmission fluid composition has (i) a kinematic viscosity of at least 6.8x10 -6 m 2 /s (6.8 cSt) at 100°C, (ii) a Brookfield viscosity of 15 Pas (15,000 cP) or less at -40°C, (iii) a kinematic viscosity at 100°C of at least 6.0x10 -6 m 2 /s (6.0 cSt) after 4 hours in the Volkswagen taper roller bearing shear stability test, and (iv) a kinematic viscosity at 100°C of at least 5.0x10 -6 m 2 /s (5.0 cSt) after 20 hours in the Volkswagen taper roller bearing shear stability test.
摘要:
The oil comprises as a base oil carbonic acid ester(s) prepd. from a source of carbonic acid moieties and the following alcoholic components: (A) a monohydric alcohol, (B) a dihydric alcohol, and (C) a neopentyl type polyol having 5-7C and 3-4 OH gps. or its dimer or trimer.
摘要:
The oil comprises as a base oil carbonic acid ester(s) prepd. from a source of carbonic acid moieties and the following alcoholic components: (A) a monohydric alcohol, (B) a dihydric alcohol, and (C) a neopentyl type polyol having 5-7C and 3-4 OH gps. or its dimer or trimer.