Abstract: This invention provides stabilized biodiesels comprising (1) biodiesel, such as fatty acid methyl ester (FAME), (2) mono- or bis-hindered phenolic derived from 2,6-di-tert-butylphenol, and (3) N,N-di-substituted para-phenylene diamine. Also methods of stabilizing biodiesel are provided involving adding (2) and (3) to (1).

Abstract: This invention provides stabilized biodiesels comprising (1) biodiesel, such as fatty acid methyl ester (FAME), (2) mono- or bis-hindered phenolic derived from 2,6-di-tert-butylphenol, and (3) N,N?-di-substituted para-phenylene diamine. Also methods of stabilizing biodiesel are provided involving adding (2) and (3) to (1).

Abstract: Process technology is described for producing a reaction-derived product mixture containing a high yield of octylated phenyl-alpha-naphthylamine by catalytic alkylation of phenyl-alpha-naphthylamine with diisobutylene. New reaction-derived product mixtures are produced. Also provided are novel reaction-derived octylated phenyl-alpha-naphthylamine reaction product mixtures from which catalyst residues and excess olefin components have been removed. These reaction product mixtures are effective as antioxidants for various oxygen-sensitive substrate materials such as oils and lubricants. Also described are new octylated phenyl-alpha-naphthylamine product mixtures and their use in forming clear, stable, liquid antioxidant compositions for addition to a wide variety of substrates.

Abstract: A lubricant oil composition having a synergistic oxidative stability is disclosed, the composition comprising at least one hindered phenolic antioxidant, at least one mono-boronated hindered phenolic antioxidant, at least one di-boronated hindered phenolic antioxidant, at least one alkylated diphenylamine and at least one organomolybdenum compound. The invention also provides a lubricating oil additive concentrate composition that imparts synergistic oxidative stability to a lubricant oil upon its addition, the concentrate composition comprising at least one hindered phenolic antioxidant, at least one mono-boronated hindered phenolic antioxidant, at least one di-boronated hindered phenolic antioxidant, at least one alkylated diphenylamine and at least one organomolybdenum compound. Further, the concentrate compositions of the present invention may also be prepared with a high concentration of hindered phenolic antioxidants without deleterious effects on viscosity or lubricant solubility.

Abstract: A lubricant oil composition having a synergistic oxidative stability is disclosed, the composition comprising at least one hindered phenolic antioxidant, at least one mono-boronated hindered phenolic antioxidant, at least one di-boronated hindered phenolic antioxidant, and at least one alkylated diphenylamine. The invention also provides a lubricating oil additive concentrate composition that imparts synergistic oxidative stability to a lubricant oil upon its addition, the concentrate composition comprising at least one hindered phenolic antioxidant, at least one mono-boronated hindered phenolic antioxidant, at least one di-boronated hindered phenolic antioxidant, and at least one alkylated diphenylamine. Further, the concentrate compositions of the present invention may also be prepared with a high concentration of hindered phenolic antioxidants without deleterious effects on viscosity or lubricant solubility.

Abstract: This invention relates to a solvent system which is non-flammable and which is comprised of a hydrocarbon solvent having a flash point less than about 38.degree. C. and a second solvent containing at least 90 wt % n-propyl bromide, the second solvent being present in an amount sufficient to obtain no flash point for the solvent system when tested in accordance with ASTM D-93 and the second solvent being the sole halogenated solvent and flash point suppressor in the solvent system.

Abstract: This invention relates to non-stabilized or at least only lightly stabilized n-propyl bromide-based solvent systems which are suitable for use in the presence of metals which normally and easily catalyze the dehydrobromination of brominated hydrocarbons, such as isopropyl bromide.

Abstract: Silicon carbide-coated carbonaceous substrates are overcoated with one or more ceramic layers derived from an organoborosilazane polymer solution containing 0-60% by weight of dispersed ceramic or preceramic powdered solids to seal the silicon carbide coating and provide better resistance to oxidative deterioration at elevated temperatures; the organoborosilazane polymer being the product obtained by reacting about 0.25-20 parts by weight of a trialkoxy-, triaryloxy-, or tri(arylalkoxy)boroxine with one part by weight of a polysilazane in an organic solvent. The thus-coated substrates are optionally overcoated with a buffer layer and then with one or more ceramic layers derived from polysilazane solutions or dispersions.

Abstract: Fiber-reinforced ceramic composites are obtained by the use of a prepreg comprising sized carbon fibers bonded together with a matrix composition which comprises about 25-60% by weight of a polysilazane and about 75-40% by weight of at least two ceramic powders selected from silicon metal, silicon carbide and silicon boride powders.

Abstract: Silane can be adsorbed by KOH on alumina. This discovery can be used to remove silane from other gases, e.g. hydrogen.

Abstract: Preceramic molding compositions capable of forming low density ceramics having acceptable strength and improved wear resistance are compositions having a particle size not larger than about 105 micrometers and comprising an intimate mixture of (A) about 50-90 parts by weight of powder ingredients comprising about 2-50% by weight of graphite powder and about 98-50% by weight of a second powder selected from silicon carbide, silicon nitride, and mixtures thereof and (B) correspondingly, about 50-10 parts by weight of a preceramic polysilazane binder.