Abstract:
Alkylated benzothiophenes or dibenzothiophenes are high-temperature stable lubricant fluids having extreme pressure and antiwear properties, additive solubility and inherent EP/antiwear properties. These novel fluids may also be used as additives in other lubricant fluids.
Abstract:
Monoalkylated phenoxathins are high-temperature stable lubricant fluids having extreme pressure and antiwear properties, additive solubility and inherent EP/antiwear properties. These novel phenoxathin fluids may also be used as additives in other lubricant fluids and are prepared by alkyating a phenoxathin in the presence of an acidic zeolite catalyst.
Abstract:
Alkylated thianthrenes are high temperature stable lubricant fluids having excellent thermal stability, antiwear and load-carrying properties and excellent additive solubility as well as multifunctional additives for fuels.
Abstract:
Alkylated thiophene compounds are high temperature stable lubricant fluids having excellent thermal stability, antiwear and load-carrying properties and excellent additive solubility.
Abstract:
Alkylated citric acid derivatives obtained as a reaction product of citric acid and an alkyl alcohol or an amine have been found to be effective antiwear and friction modifying additives for fuels and lubricants.
Abstract:
Monoalkylated diphenyl oxides are high-temperature stable lubricant fluids having excellent low temperature viscometrics, and excellent additive solubility. These monoalkylated products are obtained by the alkylation of diphenyl oxide using, for example, an olefin alkylating agent, usually in the C.sub.8 to C.sub.18 range, in the presence of an acidic zeolite alkylation catalyst such as USY, which provides the selectivity for the monoalkylated product.
Abstract:
Epoxy functionalized polyalpha-olefin lubricants compositions are prepared with superior properties by epoxidizing the olefinic bond of oligomers prepare by oligomerizing C.sub.6 -C.sub.20 alpha-olefins with reduced valence state chromium catalyst on silica support. The invention encompasses a product of reaction made by epoxidizing C.sub.30 + polyalpha-olefin oligomeric hydrocarbon lubricant having a branch ratio of less than 0.19 and pour point below -15.degree. C. in the presence of an epoxidizing amount of an epoxidizing agent wherein said product comprises a mixture of 2-dialkyl oxirane and 1,2-dialkyl oxirane having between an average of C.sub.30 and C.sub.1000 carbon atoms, said mixture having a branch ratio of less than 0.19 and pour point below -15.degree. C. The invention further encompasses blends and additive compositions of the novel epoxidizing polyalpha-olefins.
Abstract:
An aromatic functional fluid, specifically a monoalkylated tetradecyl diphenyl oxide synthetic lubricant, contains a polymer-supported reaction product of an organic quaternary ammonium salt, derived from a mercapto-heterocycle and a quaternary ammonium salt. To produce the polymer-supported organic quaternary ammonium salt, the salt is reacted with a dicarboxylic acid or anhydride, specifically 2-dodecen-1-ylsuccinic anhydride. An arylamine antioxidant, such as alkylated phenyl naphthylamine, can be added to the polymer supported organic quaternary ammonium salt-treated functional fluid to impart extra antioxidant and stability properties.
Abstract:
Block and random straight chain and star-branched liquid copolymers of two different conjugated dienes, the residual ethylenic unsaturation of the polymerized units of one of which, e.g. isoprene, is less readily hydrogenated than that of the other diene, e.g., butadiene. In the case of block copolymers, the terminal blocks of a straight chain copolymer or the blocks of the free ends of the branches of a star-branched copolymer are composed of the less readily hydrogenated diene polymer while the more readily hydrogenated diene polymer is in the form of central blocks of a straight chain copolymer or interior blocks of the branches of a star-branched copolymer. These copolymers may be selectively hydrogenated so that substantially all of the residual ethylenic unsaturation of the more readily hydrogenated polymerized diene units are hydrogenated while enough residual ethylenic unsaturation of the less readily hydrogenated polymerized diene units remains unhydrogenated to provide sufficient sites for subsequent vulcanization or chemical modification. The combination of elastomeric properties and oxidative stability possessed by the polymers of this invention makes them suitable for many and uses such as sealants, caulks and adhesives.
Abstract:
In the control of a refinery process, vanadium content of the hydrocarbon streams is determined by measuring the intensity of the 5 isotropic and 6 anisotropic ESR spectral peaks. The ln of the sum of the intensities of these two peaks has a linear relationship to vanadium content.