Abstract: Modified organic isocyanate composition containing urea and/or biuret groups and/or salts of these groups, obtained from the reaction of a blocked polyamine composition and an unblocked isocyanate composition.

Abstract: A process for the preparation of 2-aminophenyl thioethers of the formula (1) ##STR1## in which R represents an alkylC.sub.1 -C.sub.6 group which can be substituted by hydroxyl, alkoxyC.sub.1 -C.sub.4, carboxyl, --COO-alkyl-C.sub.1 -C.sub.4, alkenylC.sub.2 -C.sub.6 or phenyl groups or by the radical ##STR2## and X and Y are each a hydrogen or halogen atom or an alkylC.sub.1 -C.sub.6, alkoxyC.sub.1 -C.sub.

Abstract: A process is provided for producing dimethylamine, comprising reacting methanol and/or dimethylether and ammonia, in amounts sufficient to provide a carbon/nitrogen (C/N) ratio of from about 0.2 to about 1.5, at a temperature from about 250.degree. C. to about 450.degree. C., in the presence of a catalytic amount of an acidic zeolite rho.

Abstract: A method for producing amines, the method comprising contacting at reactive conditions at least one alcohol, aldehyde or ketone, or a mixture thereof, with an aminating agent in the presence of a catalyst, is improved by employing as the catalyst a composition comprising cobalt, copper, and a third component selected from a group consisting of iron, zinc, zirconium and mixtures thereof.

Abstract: N-(D)-ribitylxylidine (I) is prepared by reacting (D)-ribose (II) with 3,4-dimethylaniline (III) or 3,4-dimethyl-1-nitrobenzene (IV) in aqueous or aqueous/organic solution or in solution in a water-soluble organic solvent under an elevated hydrogen pressure and in the presence of a hydrogenation catalyst and of a boric acid compound,(a) using the boric acid compound in a catalytic amount of from about 6 to 35 mmol, preferably from 6 to 20 mmol, per mol of ribose,(b) carrying out the reaction under a hydrogen pressure of from 1 to 20, preferably from 2 to 9, bar and(c) carrying out the hydrogenation at from 40.degree. to 80.degree. C. over Raney nickel as hydrogenation catalyst.

Abstract: Prepare diamino- or dialkylaminobenzenediols by hydrogenating benzoquinone compounds in the presence of a solvent and a catalyst.

Abstract: Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product.

Abstract: Recovery of bis(hexamethylene)triamine from still heels of hexamethylenediamine by extraction using an aliphatic hydrocarbon having a boiling point between about 34.degree. C. and 210.degree. C.

Abstract: There are provided compounds of formula I, ##STR1## and pharmaceutically acceptable derivatives thereof. There are also described the use of the compounds of formula I as pharmaceuticals, methods for making the compounds and pharmaceutical, e.g. cardiac, compositions containing the compounds.

Abstract: Alkylated aromatic primary amines undergo disproportionation and transalkylation in the presence of a carbon-containing catalyst at a temperature between 200.degree. C. and 500.degree. C. The carbon-containing catalyst may have carbon as the only active component, or optionally, may also contain a Group VIIIA metal, such as platimum, palladium, nickel, cobalt or mixtures thereof.

Abstract: The present invention relates to a vapor phase process for the production of N-alkyl and N,N-dialkylaniline by alkylation of aniline with an alcohol, preferably methanol and ethanol, in the presence of a ZSM-5 catalyst. A modified ZSM-5 catalyst has the advantage of high selectivity for N-alkylation while suppressing the formation of undesired by-products, such as toluidines. The molar ratio of silica to alumina in the catalyst is from about 20:1 to 700:1 and preferably from about 30:1 to 200:1. The silica-alumina may be modified with alkali metal, alkali earth metal or transition metal ions, preferably cesium, potassium, magnesium and iron, to form the finished catalyst. The reactants are contacted in the presence of the catalyst at a temperature of from about 300.degree. to 500.degree. C., at a pressure of from about 1 to 3 atmospheres, and at a molar ratio of alcohol to aniline of from about 1 to 6. The feed rates expressed as weight hourly space velocity (g feed/g catalyst/hour) are broadly from about 0.

Abstract: An improved method for amine regeneration wherein a rich amine out of a first heat exchanger is temperature controlled prior to transfer to a second heat exchanger. At least a portion of the hot overhead gasses exiting from a stripping still are transferred to the second heat exchanger. Temperature controlled heated rich amine liquid passes through the second exchanger and contacts the hot overhead gasses. The rich amine liquid is increased in higher temperature thereby and then is transferred to yet a third exchanger and finally to the stripping still for regeneration of lean amine. The reduced temperature overhead gasses are transferred to the reflux condensor for final cooling.

Abstract: The catalytic alkylation of primary and secondary amino groups in linear polyamines using an "activated" copper catalyst.

Abstract: Procainamide and N-acetylprocainamide (NAPA) immunogens, antibodies prepared therefrom, labeled conjugates, synthetic intermediates, and the use of such antibodies and labeled conjugates in immunoassays for determining the respective drugs. The immunogens comprise the drugs coupled at the .alpha.-position of the amide side chain to an immunogenic carrier material. The labeled conjugates and synthetic intermediates similarly are .alpha.-position derivatives of the drugs or precursors thereof. The antibodies and labeled conjugates are particularly useful in homogeneous nonradioisotopic immunoassays for measuring the respective drugs in biological fluids such as serum.

Abstract: A process is disclosed for preparing an isomeric mixture of methyl-substituted aniline comprising contacting at least one of said analines with a specified zeolite catalyst.

Abstract: All-cis-1,3,5-Triamino-2,4,6-trihydroxycyclohexane derivatives corresponding to the general formula I ##STR1## wherein the symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are identical or different and represent hydrogen atoms, alkyl groups or --CO-alkyl groups wherein the alkyl in the alkyl or --CO-alkyl group has 1 to 18 carbon atoms and the alkyl and --CO-alkyl groups may contain, independently of one another, one or more identical or different functional groups, and at least one of the groups R.sub.1 to R.sub.6 is one of the above mentioned unsubstituted or substituted alkyl groups or --CO-alkyl groups, and their salts with pharmacologically conventionally used inorganic or organic acids and their quaternary ammonium salts, processes for their preparation and their use, and pharmaceutical preparations containing these compounds.

Abstract: This invention concerns the synthesis of primary amines from olefins, synthesis gas and ammonia via an amination process in the presence of a cobalt catalyst, an ether solvent and a tertiary group VB donor ligand.

Abstract: Di-tert.-butylethylenediamine is prepared by reacting tert.-butylamine with glyoxal to form di-tert.-butylglyoxaldiimine and water and subsequently hydrogenating the diimine by(a) carrying out the reaction of tert.-butylamine with glyoxal in the presence of a hydrocarbon phase,(b) separating the hydrocarbon with the reaction product from water, and(c) catalytically hydrogenating the reaction product in the hydrocarbon phase.

Abstract: A process for producing a polyether polyol with a content of 0.5 to 99.5% by weight of oxytetramethylene groups derived from tetrahydrofuran by copolymerizing tetrahydrofuran or a mixture of tetrahydrofuran and other cyclic ether copolymerizable therewith with a polyhydric alcohol having two or more hydroxyl groups per one molecule with the use of a heteropoly-acid and/or its salt as a catalyst, which comprises allowing 0.1 to 15 molecules of water per one heteropoly-anion to exist in the catalyst phase.The above-described polyether polyol is an industrially useful polymer which is a starting material for polyurethane to be used for spandex or a synthetic leather, etc.

Abstract: A process for preparing an aminoacetaldehyde dialkyl acetal which comprises reacting a halogenoacetaldehyde dialkyl acetal with ammonia or an alkylamine in an aqueous medium in the simultaneous presence of an alkali metal hydroxide or of an alkaline earth metal hydroxide, and distilling the resulting reaction mixture.