Abstract: An improvement in the process for the continuous manufacture of an aldehyde by reaction of an olefin with carbon monoxide and hydrogen in the presence of a rhodium catalyst at an elevated temperature and pressure followed by distillative separation of the non-converted feedstocks and low boiling components of the reaction mixture, the improvement residing in employing a carbon monoxide/hydrogen mixture containing 2-20 ppm sulfur and recycling residual rhodium compounds, both dissolved and suspended in the distillation residue, to the reaction zone.

Abstract: A two-step process for the production of aliphatic or cycloaliphatic diamines having 4 to 18 carbon atoms is disclosed wherein in the first step an aliphatic or cycloaliphatic dialdehyde is reacted with a monoamine olefin at atmospheric pressure at a temperature up to 100.degree. C. to form the corresponding diazomethyne and in the second step the diazomethyne is reacted at 60.degree. to 200.degree. C. and 50 to 300 bar with a mixture of ammonia and hydrogen in the presence of a hydrogenation catalyst to form the corresponding diamine and release of monoamine.

Abstract: A process for the preparation of 2,3-dimethylpentanal which comprises contacting 3-methyl-2-pentene with carbon monoxide and hydrogen in the presence of a rhodium carbonyl compound as catalyst. Rhodium carbonyl catalysts are those which contain only rhodium and carbon monoxide and in certain cases, also hydrogen. Especially contemplated are non-phosphine containing rhodium carbonyl catalysts.

Abstract: There is disclosed a method for the production of hydrocarbon mixtures containing at least 50% by weight of C.sub.2 to C.sub.4 hydrocarbons and at least 50% by weight of olefins by catalytic hydrogenation of carbon monoxide in fixed-bed reactors under certain particular conditions which are necessary for the production of the aforementioned hydrocarbons.

Abstract: An improvement in a process for the manufacture of .beta.-(dimethylamino)-propionitrile by contacting acrylonitrile with dimethylamine, the improvement residing in passing the reactants in countercurrent with respect to one another in a bubble column reactor and reacting them therein at a temperature between 25.degree. and 80.degree. C., preferably 40.degree. to 60.degree. C.

Abstract: This invention relates to novel quaternary copolymers and their preparation. The quaternary copolymers consist of 70-90 parts ethylene, 0.5-15 parts of an alkyl ester (wherein said alkyl group contains up to 8 carbon atoms) of an unsaturated monocarboxylic acid having 3-6 carbon atoms or a vinyl ester of a saturated monocarboxylic acid having up to 3 carbon atoms, 0.5-10 parts of an amide of an unsaturated monocarboxylic acid having 3-6 carbon atoms, and 0.15 parts of a vinyl ether having up to 10 carbon atoms; the sum of the parts totalling 100.

Abstract: A perfume composition comprising an isomeric hydroxymethyl tricyclo[5,2,1,0.sup.2,6 ]-decane of the formula ##STR1## wherein R.sub.1 and R.sub.2 are the hydroxymethyl CH.sub.2 OH or the formyl CHO group andR.sub.1 represents CH.sub.2 OH, when R.sub.2 is CHO and vice versa or a mixture thereof.

Abstract: An improvement in a process for the manufacture of 2-ethylhexanol wherein n-butyraldehyde is subjected to aldol condensation, the resultant aldol condensation product is catalytically hydrogenated in a hydrogenation stage and the hydrogenation product is subjected to two separate multiple stage distillations to separate, in the first case the first runnings, a fraction containing the main amount of 2-ethylhexanol, and the residue. In the second case this residue is separated into a 2-ethylhexanol fraction and a distillation residue, the improvement residing in cracking the distillation residue by heating the same at 200 to 250.degree. C whereby to obtain cracked products comprising n-butanal, 2-ethylhexenal, 2-ethylhexanal, and/or 2-ethylhexanol together with non-cracked higher boiling substances. The cracked products are separated from the non-cracked products and the cracked products are recycled to the hydrogenation stage.

Abstract: A high molecular weight copolymer of ethylene and a C.sub.3 -C.sub.20 .alpha.-olefin which, after being molded at room temperature and pressure-free tempered at 120 to 250.degree. C. and thereafter cooled, provides molded articles having an ultimate tensile strength of more than 200 kg per square centimeter measured at 120.degree. C. and an impact strength of more than 200 kg cm/cm.sup.2 measured at 23.degree. C.; a process for the preparation of such a copolymer by a Ziegler catalysis which process is characterized in that the catalyst which is employed is one obtained by reducing a titanium-(IV)-halide with an organo-aluminum compound in an inert solvent such that the concentration of titanium-(III)-halide so formed amounts to 30 to 200 m mol/liter solvent, the C.sub.3 -C.sub.20 .alpha.-olefin is employed in an amount of 0.05 to 5 weight percent based upon the weight of the ethylene and the catalyst is either initially contacted with C.sub.3 -C.sub.20 .alpha.

Abstract: A phenol/formaldehyde condensation product of a 4,4'-thio-bis-(dialkylphenol) and formaldehyde having a molecular weight of 1,000 to 4,000; a process for preparing such a condensation product by contacting 4,4'-thio-bis-(dialkylphenol) and a source of formaldehyde in the presence of a protonic acid catalyst; and the use of such a condensation product as an antioxidant in an olefin polymer or copolymer composition.

Abstract: A fusion adhesive comprising an olefin copolymer comprising 70 to 95 percent by weight ethylene, 0.5 to 10 percent by weight of an amide of an unsaturated carboxylic acid and 0.5 to 15 percent by weight of an unsaturated carboxylic acid, the use of such fusion adhesive to secure two objects together, especially a polymeric plastic composition to a metal composition.

Abstract: A process for separating carbon black from a liquid containing it is disclosed wherein a particular amount of an oxygen containing higher boiling product which is the non-volatile residue produced as a by-product of the oxo-synthesis is added to the liquid whereby the carbon black passes into the higher boilng product phase to form an admixture. The admixture is passed to a settling zone where it separates from the liquid. Separation of the carbon black then takes place through the use of a disk centrifuge.

Abstract: A process for the manufacture of a molded article from a powder form of a polyolefin of molecular weight of at least one million which comprises introducing a homopolymer of ethylene or a copolymer of ethylene with an .alpha.-olefin of 3 to 10 carbon atoms having a molecular weight of at least one million into a mold loosely closed with a plug, heating the same in said mold in an inert atmosphere at a temperature of 150.degree. to 250.degree. C, whereby said polyolefin is transformed into a rubbery elastic state, thereafter compressing said polyolefin in said mold for at least two minutes at a pressure of 2.5 to 25 N/mm.sup.2 and thereafter compressing said polyolefin for at least one minute at a pressure of 40 to 100 N/mm.sup.2.

Abstract: A process for the separation of carbon black from liquids containing it is disclosed wherein a particular amount of a liquid hydrocarbon is added to the liquid containing carbon black to form a mixture whereby the carbon black passes into the hydrocarbon phase. The mixture is then passed to a settling zone and the hydrocarbon and carbon black are separated from the liquid by forming a layer thereon. The layer is then passed through a disk centrifuge to substantially separate the carbon black from the hydrocarbon.

Abstract: A continuous process for the manufacture of .alpha.-cyano-ethylated aliphatic aldehydes by continuously passing acrylonitrile and aldehyde through a tubular reaction zone and therein contacting the same with an alkali hydroxide at a temperature between 20.degree. and 120.degree. C, the contact of the acrylonitrile and aldehyde with the alkali hydroxide being for a brief period of time and thereafter immediately separating the reaction product from the alkali hydroxide. Unreacted acrylonitrile and aldehyde can be recycled to the tubular reactor and additional alkali hydroxide can be added to make up for any losses.

Abstract: A process is described whereby corrosive, halogen-containing compounds are removed from polyolefins. Briefly, the process comprises mixing the polyolefin with water in a purification zone, treating at least part of the water with an ion exchanger and returning the treated water to the purification zone.

Abstract: Divalent alcohols are produced by catalytic hydrogenation of a mixture comprising 20 to 40% of the corresponding hydroxyaldehyde and an organic compound. The organic compound is a solvent for and has a lower boiling point than the divalent alcohol.

Abstract: A method for preparing neopentane diamine is disclosed comprising reacting neopentane glycol with ammonia in the presence of hydrogen and a nickel containing catalyst at elevated temperatures and pressures. Neopentane diamine is useful as an intermediate in the preparation of polyurethanes.

Abstract: A process is described wherein polyethylenes having molecular weights greater than 500,000 are prepared and in which the formation of polymer film and lumps in the polymerization reactor is virtually eliminated. The process comprises polymerizing ethylene in the presence of a solvent, a titanium (III) halide/aluminum alkyl catalyst and a mono-or polyhydric alcohol, the ethylene having an oxygen content of less than 5 ppm.

Abstract: A process for the manufacture of bis-(2-cyanoethyl)-amine wherein gaseous ammonia is reacted with acrylonitrile having a 5-15% by weight water content in a bubble column reactor. The reaction is carried out at a temperature of about 20.degree.-80.degree. C.