Abstract: Coatings compositions, which are useful as buffer layers between ceramic layers derived from polysilazane-containing compositions and ceramic layers derived from organoborosilazane polymer-containing compositions, are obtained by dissolving (A) a Group IIIa metal hydrocarbyloxide, such as aluminum sec-butoxide, (B) a Group IVb metal hydrocarbyloxide, such as zirconium propoxide, (C) a bis-, tris-, or tetrakis(dialkylamino)metal of Group IVb, such as tetrakis(diethylamino)titanium, (D) a polysilazane and/or a bis-, tris-, or tetrakis(dialkylamino)silane, such as tetrakis(dimethylamino)silane, and (E) optionally also a cyclopentadienyl Group IVb metal halide, such as bis(cyclopentadienyl)zirconium dichloride, in an organic solvent, the amounts of ingredients A-D being such that each constitutes 1-50% of their combined weights, and the amount of ingredient E being such that it constitutes 0-20% of the combined weights of the ingredients.

Abstract: The quality of a product predominant in tetrabromobisphenol-A is enhanced by contacting the product with a quality enhancing amount of treated water and heat treating the product for a period of time and at a temperature which are sufficient to obtain a TBBPA predominant product having less than about 20 ppm of ionic impurities.

Abstract: A synthetic oil composition comprising the reaction product of an .alpha.-olefin oligomer derived from an .alpha.-olefin monomer containing from about 6 to 20 carbon atoms and from about 0.01 to 1 mole of a phenol per mole of oligomer. The oil composition can be further reacted to form alkoxylated products and can be mixed with polar additives to form homogeneous synthetic lubricants.

Abstract: Surfactant compositions which provide acceptable foamability at a lower cost than amine oxides consist of (A) an amine oxide corresponding to the formula RR'R"NO in which R is a primary alkyl group containing 6-24 carbons and R' and R" are independently selected from methyl, ethyl, and 2-hydroxyethyl and (B) a normally liquid polyalkylene glycol.

Abstract: Organophosphorus compounds are stabilized against decomposition during and after recovery from their synthesis reaction mixtures by the addition to the synthesis reaction mixture of at least 0.5% by weight of an acid scavenger, based on the weight of the organophosphorus compound, before allowing the organophosphorus compound to crystallize. The invention is of particular value in the stabilization of 2,2'-alkylidenebis(dialkylphenyl)fluorophosphonites, such as 2,2'-ethylidenebis(4,6-di-t-butylphenyl)fluorophosphite, which is rendered more suitable for use as a stabilizer for organic polymers, e.g., polycarbonates, by the practice of the invention.

Abstract: A crosslinkable composition suitable for use as an infiltrant or as a binder for ceramic powders, such as silicon carbide and/or silicon nitride, in a formulation intended to be injection molded or extruded comprises about 40-70% by weight of a low molecular weight polysilazane, about 15-35% by weight of a medium molecular weight polysilazane, and about 5-30% by weight of an unsaturated organic or organosilicon compound containing at least two alkenyl groups. A preferred unsaturated compound is methylvinylcyclosilazane.

Abstract: Improved molecular sieves and processes for treatment of molecular sieves which permit use for separation of ethylene and silane without attending formation of ethylsilane. Such treatment includes treatment of sieves with silane at an effective temperature, pressure and time.

Abstract: An apparatus and process for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.

Abstract: An esterification product obtained by reacting ethylene oxide/propylene oxide block copolymer with a long-chain monocarboxylic acid, when employed as a supplemental rust inhibitor in lubricating oils for internal combustion engines, has been found to furnish excellent rust inhibition in the engines and to be compatible with other components in the lubricating oils.A lubricating oil composition containing such product may be used to inhibit rust formation in an internal combustion engine.

Abstract: Production of alkyl substituted aromatic diamines by reacting triethlyaluminum with an aromatic diamine and a chloride ion source in the presence of an olefin is disclosed. The alkyl substituted aromatic diamines are useful as chain extenders in polyurethane processes.

Abstract: A process for the asymmetric reduction of carboxylic acids of the formula ##STR1## or the amine salts thereof, where R and R.sub.1 are the same or different and are hydrogen, alkyl, cycloalkyl or haloalkyl and Ar is aryl or substituted aryl is disclosed.

Abstract: Preceramic compositions which have particular utility in providing protective ceramic coatings on carbon/carbon composites, graphite, carbon fibers, and other normally oxidizable materials are prepared by dispersing about 0.4-1 part by weight of a metal boride in an organic solvent solution containing one part by weight of an organoborosilazane polymer prepared by mixing about 0.25-20 parts by weight of a trialkoxy-, triaryloxy-, or tri(arylalkoxy)boroxine with a solution of one part by weight of a polysilazane in an organic solvent.

Abstract: An apparatus and process for maintaining the purity of solid/granular product and dispensing high purity granular product from a vessel. A noncontaminating surface is provided by a cup, cylinder, or other structure having a surface of silicon, silicon carbide, silicon nitride, sialon, or similar materials and preferably operates as an angle of repose valve in a pressurized system to prevent contamination by undue contact of the high purity product with conventional gastight valves such as ball valves, butterfly valves, pinch valves, etc.

Abstract: A process is provided for preparing a transition metal compound of the formula: (RC.sub.5 H.sub.4).sub.2 MX.sub.2, where R is hydrocarbyl or silahydrocarbyl of 1 to 10 carbon atoms, M is titanium or zirconium and X is halogen. The process comprises the steps of:(a) reacting Na(C.sub.5 H.sub.5) with RX, where R and X are as defined above, in an organic solvent so as to form a reaction product mixture which includes RC.sub.5 H.sub.4 and C.sub.5 H.sub.5 ;(b) vacuum stripping the product mixture at ambient temperatures so as to remove substantially all of said C.sub.5 H.sub.5 from said product mixture;(c) deprotonating the RC.sub.5 H.sub.4 ; and(d) adding MX.sub.4, where M and X are as defined above, to the product mixture so as to react the RC.sub.5 H.sub.4 and the MX.sub.4 and form said transition metal compound, the transition metal compound being substantially free of C.sub.5 H.sub.5 containing impurities.

Abstract: Preceramic compositions which have particular utility in providing protective ceramic coatings on carbon/carbon composites, graphite, carbon fibers, and other normally oxidizable materials are prepared by dispersing about 0.1-4 parts by weight of silicon boride in one part by weight of a polysilazane in solution in an organic solvent.

Abstract: Bicyclooctyl phosphines are disclosed having the formula: ##STR1## where R is C.sub.1 to C.sub.6 linear or branched alkyl, phenyl, substituted phenyl, halo, or C.sub.1 or C.sub.6 alkoxy; Ar is phenyl, substituted phenyl, naphthyl or substituted naphthyl; and x is 0 or 1.These phosphines are treated with ruthenium compounds to form a complex of the formula Ru.sub.x H.sub.y Cl.sub.z (anthraphos-m).sub.2 (S).sub.p, where S is a tertiary amine; and when y is 0, then x is 2, z is 4 and p is 1; and when y is 1, then x is 1, z is 1 and p is 0; where anthraphos-m is: ##STR2## where R is C.sub.1 to C.sub.6 linear or branched alkyl, phenyl, substituted phenyl, C.sub.1 to C.sub.6 linear or branched alkoxy or halo; Ar is phenyl or substituted phenyl or naphthyl or substituted naphthyl; and m is 0 or 1.The complex is useful in a process for the asymmetric reduction of olefinic carboxylic acids of the formula: ##STR3## where R.sub.1 and R.sub.

Abstract: A crosslinkable preceramic composition suitable for use as an infiltrant for porous ceramics, such as fiber-reinforced ceramic composites, comprises about 75-99% by weight of a low molecular weight polysilazane and about 1-25% by weight of an unsaturated organic or organosilicon compound containing at least two alkenyl groups, preferably methylvinylcyclosilazane. Infiltration of composites with the infiltrant can be accomplished by melt or solution infiltration, and the subsequent pyrolysis of the infiltrant results in the formation of a densified ceramic article having improved strength.

Abstract: Preceramic compositions which are useful in providing protective ceramic coatings on silica foams, carbon/carbon composites, graphite, and other materials are prepared by dispersing about 0-3 parts by weight of aluminum-silicon eutectic, about 0-4 parts by weight of silicon carbide, about 1.5-5 parts by weight of silicon boride, and about 0.4-5 parts by weight of silicon metal in a solution of one part by weight of a polysilazane in an organic solvent.

Abstract: Cyclic ethers are prepared by reacting an unsaturated olefin oligomer derived from an alpha-olefin monomer containing from about 6 to 20 carbon atoms with an aldehyde in the presence of an acid catalyst.

Abstract: Olefin oligomers are prepared by polymerizing one or a mixture of olefins, each of which has about 6 to 20 carbon atoms, in the presence of a catalyst prepared by reacting in an organic solvent an aluminum halide and from about 0.01 to 0.99 mole per mole of aluminum halide of a proton donor.