Abstract: Mites and insects, particularly aphids, are combated by applying as pest control agents one or more compounds of the structural formula ##STR1## in which R is tert.butylphenyl; tert.butyl; 3,5-dimethylphenyl; 1-methyl-1-phenylthioethyl; 1-methyl-1-methylthioethyl; 1-cyclohexylthio-1-methylethyl; 1-cyclohexylthiopropyl; 1-ethylthio-1-methylethyl; 1-ethylthiopropyl or 1-ethylthioethyl.

Abstract: Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically active lactide, i.e., L-(-)-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 75 parts by weight of L-(-)-lactide and 25 parts by weight of epsilon caprolactone is a thermoplastic elastomer. A copolymer prepared from 90 parts by weight of L-(-)-lactide and 10 parts by weight of epsilon caprolactone is a rigid, clear, thermoplastic solid.

Abstract: A homogeneous mixture of a polyanhydride and a polyepoxide is prepared by the copolymerization of an olefinically unsaturated monomer capable of polymerization by free-radical means with an olefinically unsaturated monoanhydride and an olefinically saturated polyanhydride in the presence of a polyepoxide and an anhydride accelerator without substantial anhydride-epoxide cross-linking. As an example, reinforcing glass fibers are impregnated with a solution of styrene, maleic anhydride, styrene-maleic anhydride copolymer, a diglycidyl ether of bisphenol A and 1-methylimidazole and the resin is thickened in situ by copolymerization of the styrene, maleic anhydride and styrene-maleic anhydride copolymer to form a moldable, homogeneous mixture of styrene-maleic anhydride copolymer, diglycidyl ether of bisphenol A, 1-methylimidazole and reinforcing glass fibers.

Abstract: In the quarrying of wet, poorly consolidated rock in which blasting charges are placed with the aid of a removable metal casing to prevent collapse of the walls of the boreholes, improved results are obtained by placing cardboard tubing inside the removable metal casing with internal bushings reinforcing the tubing joints instead of using external collars or connectors.

Abstract: Novel catalysts are provided for the polymerization of olefins such as ethylene. The catalysts consist essentially of a chromium compound supported upon an inorganic carrier containing aluminum and arsenate moieties. The inorganic carrier is an amorphous precipitate of aluminum arsenate, or an amorphous coprecipitate containing aluminum and arsenate moieties in proportions such that the aluminum and arsenic are present in an atomic ratio in the range of 5:1 to 1:1. The catalysts are particularly useful for polymerizng ethylene in a Particle Form Process in that the catalysts have essentially no induction period and provide ethylene polymers having a desirably-broad molecular weight distribution and a desirably-high melt flow shear ratio.

Abstract: Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically inactive lactide, i.e., D,L-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared from 85 parts by weight of D,L-lactide and 15 parts by weight of epsilon caprolactone is a thermoplastic elastomer. A copolymer prepared from 90 parts by weight of D,L-lactide and 10 parts by weight of epsilon caprolactone is a rigid, clear, thermoplastic solid.

Abstract: Triazolylsulfonamides of a limited class are substantially non-phytotoxic and are useful as insecticides. For example 1-N,N-dimethylcarbamyl-3-tert.butyl-1,2,4-triazol-5-yl-N,N-dimethylsulfona mide is effective in aphid control, both by foliar application and systemically.

Abstract: Insects are combated selectively in the presence of other forms of animal life by applying to the locus of the insects an effective amount of 2,3-dihydro-2,2-dimethyl-7-benzo[b]thienyl N-methylcarbamate, a compound with less mammalian toxicity than closely related carbamate insecticides.

Abstract: Ethane and other hydrocarbons of higher boiling point are separated as a liquid from natural gas to leave a gas consisting principally of methane for delivery to a pipeline. The natural gas is passed in countercurrent heat exchange with the liquid product and with the pipeline gas to cool the natural gas to a temperature at which a major part of the ethane is condensed. The condensed ethane and higher boiling point hydrocarbons are separated from uncondensed vapors in the natural gas and the vapors are expanded to a low pressure and delivered into the upper end of a fractionating tower. The condensate is expanded to the same pressure and introduced into the fractionating tower at a midpoint thereof. Gases discharged overhead from the fractionating tower constitute the pipeline gas that is returned to the heat exchanger for countercurrent heat exchange with the natural gas.

Abstract: A class of 3-benzyl-2-methylimino-5-phenyl-.DELTA..sup.4 -1,3,4-thiadiazolines which may have certain specific substituents on the benzyl and phenyl rings are useful in combating various weeds in grain crops, for example, grassy weeds in wheat and rice fields.

Abstract: A homogeneous mixture of a polyanhydride and a polyepoxide is prepared by the copolymerization of an olefinically unsaturated monomer capable of polymerization by free-radical means with an olefinically unsaturated monoanhydride and an olefinically saturated polyanhydride in the presence of a polyepoxide and an anhydride accelerator without substantial anhydride-epoxide cross-linking. As an example, reinforcing glass fibers are impregnated with a solution of styrene, maleic anhydride, stryene-maleic anhydride copolymer, a diglycidyl ether of bisphenol A and 1-methylimidazole and the resin is thickened in situ by copolymerization of the styrene, maleic anhydride and styrene-maleic anhydride copolymer to form a moldable, homogeneous mixture of styrene-maleic anhydride copolymer, diglycidyl ether of bisphenol A, 1-methylimidazole and reinforcing glass fibers.

Abstract: In the process for manufacturing 4-chloro-2-butynyl m-chlorocarbanilate (the herbicide barban) from the corresponding 4-hydroxy-2-butynyl m-chlorocarbanilate it has been discovered that yields and product quality are improved by employing dimethylformamide as reaction promoter in combination with thionyl chloride or phosgene as chlorinating agent.

Abstract: 3,5-ditert.butyl-4-hydroxybenzaldehyde is manufactured in good yields by reacting 2,6-ditert.-butylphenol with hexamethylenetetramine or a combination of formaldehyde and ammonium acetate in aqueous acetic acid reaction medium.

Abstract: Deashed solid coal effluent from a coal solvent deashing process in which raw coal is converted to deashed solid and liquid coal is passed to a delayed coker. The coker operates at a higher temperature than is employed in the solvent deashing process and produces deashed coke, liquid hydrocarbonaceous material including solvent boiling range liquid and hydrogen-containing gas. The hydrogen produced in the coker is derived from hydrogen which was previously consumed in the deashing step and can also include hydrogen contained in the raw coal. The solvent boiling range liquid and hydrogen produced in the coker are recycled to the solvent deashing step. Since the coker supplies a portion of the solvent required in the deashing step, the deashing step is operated to produce only a portion of its recycle liquid solvent requirement, thereby conserving hydrogen.

Abstract: Homogeneous solutions of styrene, maleic anhydride and styrene-maleic anhydride copolymer having a low overall styrene content are prepared. These reactive solutions crosslink with polyfunctional reactants such as diepoxides to form thermoset resins.

Abstract: Mites and insects, particularly aphids, are combated by applying as pest control agents one or more compounds of the structural formula ##EQU1## in which R is tert.butylphenyl; tert.butyl; 3,5-dimethylphenyl; 1-methyl-1-phenylthioethyl; 1-methyl-1-methylthioethyl; 1-cyclohexylthio-1-methylethyl; 1-cyclohexylthiopropyl; 1-ethylthio-1-methylethyl; 1-ethylthiopropyl or 1-ethylthioethyl.

Abstract: 3,5-ditert.butyl-4-hydroxybenzyl alcohol is converted to the corresponding aldehydes by reaction with hexamethylenetetramine in aqueous acetic acid medium.

Abstract: Triazolylsulfonamides of a limited class are substantially non-phytotoxic and are useful as insecticides. For example 1-N,N-dimethylcarbamyl-3-tert.butyl-1,2,4-triazol-5-yl-N,N-dimethylsulfona mide is effective in aphid control, both by foliar application and systemically.

Abstract: A process for gasifying coal to produce carbon monoxide and hydrogen in which a first stream of coal is burned without bed formation in a combustion zone in the presence of water under oxidation conditions to produce gases containing carbon dioxide and steam. A second stream of coal is maintained as a fluid bed in a separate gasifier zone by upflowing carbon dioxide and steam from the combustion zone while being gasified under reducing conditions to produce carbon monoxide and hydrogen. The water vapor in the gasifier product stream is condensed and the condensate is used to scrub char and pollutants from the same gasifier product stream to form a slurry which is utilized as fuel in the combustion zone.

Abstract: A process for gasifying coal to produce carbon monoxide and hydrogen in which a first stream of coal is burned without bed formation in combustion zone in the presence of water under oxidation conditions to produce gases comprising carbon dioxide and steam. A second stream of coal is maintained as a fluid bed in a separate gasifier zone by upflowing carbon monoxide and steam from the combustion zone while being gasified under reducing conditions to produce carbon monoxide and hydrogen. A high sulfur carbonaceous material from an external process comprises at least in part said first stream of coal entering the combustion zone and the sulfur dioxide produced therefrom in the combustion zone is reduced entirely to hydrogen sulfide in passage through the fluid bed gasifier zone.