Abstract: There are provided oligoarylene derivatives capable of emitting blue light at high luminous efficiency which are represented by the following general formulae (1) to (4): Ar1-Ch-Ar2 ??(1) Ch1-L-Ch2 ??(2) Ar3-(L1)a-Ch3-(L2)b-Ar4 ??(3) Ar5-Ch4-(Ar7)n-L3-(Ar8)m-Ch5-Ar6 ??(4) wherein Ch, Ch1 and Ch2 are respectively a group containing at least one substituted or unsubstituted condensed aromatic ring having 14 to 20 nuclear atoms; Ch3, Ch4 and Ch5 are respectively a substituted or unsubstituted arylene group having 14 to 20 nuclear atoms; Ar1, Ar2, Ar3, Ar4, Ar5 and Ar6 are respectively a substituted or unsubstituted aryl group having 5 to 30 nuclear atoms; Ar7 and Ar8 are respectively a substituted or unsubstituted arylene group having 5 to 30 nuclear atoms; L1, L2 and L3 are respectively a connecting group; and a, b, n and m are respectively an integer of 0 to 1, as well as organic electroluminescent devices using the same.

Abstract: The present invention provides thiochroman- and dihydrobenzothiophene-substituted methylene compounds of formula I. Further provided are compositions and methods utilizing said formula I compounds for the control of undesirable plant species.

Abstract: The present invention relates to pyrazole derivatives of the formula (I), ##STR1## wherein R.sup.1, R.sup.2, X.sup.1, X.sup.2, X.sup.3, X.sup.4, X.sup.5, X.sup.6, X.sup.7, X.sup.8, p and n are as defined on claim 1, or a salt thereof, and herbicides containing them as active ingredients.

Abstract: Microencapsulating lubricating fluids and additives and a method of preparing microencapsulated lubricants including the steps of preparing an emulsification medium, adding a lubricant to the emulsification medium, emulsifying the emulsification medium and lubricant to form an emulsion, adding a first solution including resorcinol and dimethylol urea to the emulsion, acidifying the first solution and emulsion, adding a second solution consisting of resorcinol and dimethylol urea to the acidified first solution and emulsion while vigorously stirring it to form a microcapsule suspension, adjusting the pH to be basic, filtering and washing the microcapsule suspension to separate the microcapsules from the solution, and drying the microcapsules.

Abstract: A method of preparing microencapsulated basic solutions including the steps of preparing a polymer which is hydrophobic at high pH values, preparing a basic solution, dissolving the polymer in an organic solvent, adding a surfactant to the polymer solution, adding the basic solution to the dissolved polymer, emulsifying the basic solution and dissolved polymer and spray drying the emulsion while stirring the emulsion.

Abstract: A fuel composition for spark-ignition engines consisting essentially of gasoline and a barium compound in an amount of 100 ppm or more in terms of barium metal and relative to the gasoline, said barium compound being selected from the group consisting of a barium sulfonate, a barium naphthenate, a barium alkylsalicylate and a barium .alpha.-alkylalkane monocarboxylate. Spark-ignition engines utilizing this fuel composition operate with improved characteristics relative to adhesion of carbon to the spark plugs. The exhaust from the engine does not degrade the exhaust gas purifying catalyst even when the engine is equipped with an exhaust ignition control device.

Abstract: A resin composition comprising a modified polypropylene obtained by reacting a polypropylene with a liquid rubber and maleic anhydride in a solvent in the presence of a radical generator, another polyolefin and, if desired, an inorganic and/or an organic filler.The resin composition has excellent coating, adhesion and plating properties.

Abstract: A process for producing a resin composition having excellent plating properties comprising heating a mixture consisting substantially of 100 parts by weight of a polyolefin resin, 5 to 150 parts by weight of an inorganic filler, 1 to less than 20 parts by weight of a liquid rubber, 0.1 to 10 parts by weight of an unsaturated carboxylic acid and 0.001 to 10 parts by weight of a radical generator at 110.degree. to 280.degree. C. in the absence of solvents.

Abstract: Waste waters, including those containing an oil, are treated with activated sludge and a hydrocarbon having from 4 to 20 carbon atoms per molecule or a hydrocarbon fraction containing the same.

Abstract: This invention relates to a process for preparing a film having asymmetric cross-sectional structure by wet method. Films with excellent properties can be obtained by feeding the starting solution to the interface area of two phases of the coagulation bath to make said solution into a gel.

Abstract: Composition for extrusion molding comprising a blend of 90 to 30 weight percent of thermoplastic resin and 10 to 70 weight percent of inorganic filler and a modifier selected from sorbitan fatty acid esters and polyoxyethylene sorbitan fatty acid esters in an amount of 0.1 to 5 parts by weight based upon 100 parts by weight of the blend.

Abstract: On treating a waste water with activated sludge, an appropriate amount of sea water is added to the waste water.

Abstract: Reducing gas of low CH.sub.4 content is produced by cracking a heavy hydrocarbon having a C/H atomic ratio of more than one at 800.degree.-950.degree. C. in the presence of a catalyst comprising at least one metal selected from K, Ni, Co and Mo or at least oxide of said metal, associated with alumina or a silica-alumina composite.

Abstract: A process for producing modified polypropylene comprising reacting polypropylene with a liquid rubber and maleic anhydride in a solvent in the presence of a radical generator.

Abstract: Unsaturated carbonyl compounds such as methyl methacrylate are produced by reacting an acetylene, CO and water or an alcohol in the presence of a catalyst comprising a Pd(II) compound and a compound R"X where R" is H, lower alkyl or aryl and X is halogen, and in the presence of an oxygen-containing compound other than water or an alcohol.