Abstract: A process for the preparation of aromatic N,N'-disubstituted guanidines is described in which the corresponding aromatic N,N'-disubstituted thioureas are reacted with ammonia and oxygen or with an oxygen-containing gas, in the presence of a solvent and elements acting as catalysts having atomic numbers 21 through 30 in the Periodic Table or the lanthanides or the salts, oxides or complexes thereof.

Abstract: The invention relates to a process for synthesizing alkylene bisdithiocarbamates or the ammonia adducts thereof as well as mixtures that can be synthesized thereby. The starting materials are carbon disulfide, ammonia, a diamine and a metal oxide, which may be manganese(II) oxide, or the hydrate or hydroxide thereof. The metal oxide, its hydrate or hydroxide thereof is allowed to react either with a mixture syntheiszed from an alkylenediamine, carbon disulfide and ammonia in water, or with an aqueous solution of the ammonium alkylene bisdithiocarbamate. The concentration of the individual starting materials both relative to each other and to water is of prime importances as to which compounds in particular are ultimately obtained.

Abstract: A process for synthesizing ammonia complexes of zinc bisdithiocarbamates, starting from carbon disulfide, ammonia, an alkylenediamine and zinc oxide, in which an aqueous mixture of alkylenediamine, carbon disulfide and ammonia in the molar ratio of 1:2:<2, i.e., not 1:2:2, as would be necessary for synthesis of the ammonium alkylene bisdithiocarbamate intermediate product, is reacted with zinc oxide.

Abstract: A process for the preparation of ethane and ethylene by oxidation of methane with oxygen at a temperature of 600.degree. to 900.degree. C., in which lead (II) oxide is used as catalyst (a) dispersed on a carrier of pumice, silicon carbide, zinc oxide, zirconium dioxide, and/or oxides of alkaline-earth elements, or (b) in a mixture with manganese (II) oxide dispersed on a carrier of pumice, silicon carbide, silicon dioxide, titanium dioxide, zirconium dioxide, zinc oxide, and/or oxides of alkaline-earth elements, or (c) without a carrier in a mixture with sodium silicate alone or in combination with silicon dioxide, titanium dioxide, zirconium dioxide, manganese (II) oxide, zinc oxide, and/or oxides of alkaline-earth elements. Ethane and ethylene are obtained with this process in high selectivities with good catalyst activities.

Abstract: This invention relates to a process for the production of benzothiazolyl sulphenamides corresponding to the following general formula: ##STR1## in which a corresponding 2-mercaptobenzothiazole or a dibenzothiazolyl-2,2'-disulphide is reacted with a primary or secondary amine at temperatures of from 0 to 100.degree. C. in the presence of ammonia, oxygen, a copper-containing catalyst and a reaction medium containing an excess of the primary or secondary amine or of a mixture of that amine with water and/or a water-miscible organic solvent.Benzothiazolyl sulphenamides are valuable vulcanization accelerators.

Abstract: A process for the preparation of dithiazolyl disulfides by the catalytic oxidation of a 2-mercaptothiazole with ammonia and either oxygen or an oxygen-containing gas at a temperature of between 0.degree. and 150.degree. C.

Abstract: A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a trans-cyclohexane-1,4-diurea and trans-cyclohexane-1,4-disulphonyl urea by reacting ammonia with a mixture of cis and trans cyclohexane-1,4-dicarboxylic acid, a lower alkyl ester, a glycol ester, an oligomeric ester or a polyester to make a solid trans-dicarboxylic acid diamide in a first step. The diamide is chlorinated to form trans-cyclohexane-1,4-dicarboxylic acid-bis-N-chloramide.

Abstract: A process for the preparation of thiuram disulfides substituted with aliphatic, cycloaliphatic, araliphatic, or aromatic hydrocarbon radicals, said process comprising reacting a suitably substituted secondary amine with carbon disulfide and in the presence of a tertiary amine or ammonia, oxygen or oxygen-containing gas, a solvent, and a metalliferous catalyst, at a temperature of between 0.degree. C. and 200.degree. C.

Abstract: A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a trans-cyclohexane-1,4-diurea and trans-cyclohexane-1,4-disulphonyl urea by reacting ammonia with a mixture of cis and trans-cyclohexane-1,4-dicarboxylic acid, a lower alkyl ester, a glycol ester, an oligomeric ester or a polyester to make a solid trans-dicarboxylic acid diamide in a first step. The diamide is chlorinated to form cyclohexane-1,4-dicarboxylic acid-bis-N-chloramide.

Abstract: A process for the preparation of thiuram disulfides substituted with aliphatic cycloaliphatic, araliphatic, or aromatic hydrocarbon radicals, said process comprising reacting a suitably substituted secondary amine having a pK.sub.a .gtoreq.8 with carbon disulfide in a solvent and in the presence of oxygen or oxygen-containing gas, a solvent, and a metalliferous catalyst, at a temperature of between 0.degree. C. and 200.degree. C.

Abstract: A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a trans-cyclohexane-1,4-diurea and trans-cyclohexane-1,4-disulphonyl urea by reacting ammonia with a mixture of cis and trans cyclohexane-1,4-dicarboxylic acid, a lower alkyl ester, a glycol ester, an oligomeric ester or a polyester to make a solid trans-dicarboxylic acid diamide in a first step. The diamide is chlorinated to form trans-cyclohexane-1,4-dicarboxylic acid-bis-N-chloramide.

Abstract: A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a trans-cyclohexane-1,4-diurea and trans-cyclohexane-1,4-disulphonyl urea by reacting ammonia with a mixture of cis and trans cyclohexane-1,4-dicarboxylic acid, a lower alkyl ester, a glycol ester, an oligomeric ester or a polyester to make a solid trans-dicarboxylic acid diamide in a first step. The diamide is chlorinated to form trans-cyclohexane-1,4-dicarboxylic acid-bis-N-chloramide.

Abstract: A process is disclosed for selectively making trans-cyclohexane-1,4-diisocyanate, trans-cyclohexane-1,4-diamine, a trans-cyclohexane-1,4-diurethane, a transcyclohexane-1,4-diurea and trans-cyclohexane-1,4-disulphonyl urea by reacting ammonia with a mixture of cis and trans cyclohexane-1,4-dicarboxylic acid, a lower alkyl ester, a glycol ester, an oligomeric ester or a polyester to make a solid trans-dicarboxylic acid diamide in a first step. The diamide is chlorinated to form trans-cyclohexane-1,4-dicarboxylic acid-bis-N-chloramide.

Abstract: An improved process for the preparation of para-amino diphenylamine in which para-nitroso-diphenylhydroxylamine is catalytically hydrogenated in the presence of an organic solvent and one or more metal components selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium, and platinum, and their sulfidic compounds, at temperatures from 20.degree. to 200.degree. C., is disclosed. The improvement comprises utilizing as the organic solvent one or more members of the group consisting of aniline and aniline derivatives containing ring-alkyl groups, N-alkyl groups, or a combination thereof, wherein the ring-alkyl groups contain a total of 1 to 6 carbon atoms and the N-alkyl groups contain from 1 to 6 carbon atoms.

Abstract: Blocked isocyanates of the general formula ##STR1## are obtained by converting terephthalic dialdoxime, isophthalic dialdoxime or an aliphatic, cycloaliphatic or aromatic ketoxime or an aromatic aldoxime of the general formula ##STR2## in the presence of 10-100 Mol % sodium, potassium or calcium hydroxide, with the sodium, potassium or calcium salt of a bis-N-chloramide of the general formulaCl-NH-CO-R-CO-NH-Clin water or a mixture of water and an aprotic solvent. Preferred first components include terephthalic dialdoxime, benzaldehyde-, cyclohexanone-, acetone- and acetophenoneoxime. Preferred aprotic solvents include dimethyl acetamide, dimethylformamide, sulfolan and tetramethylurea.

Abstract: Polyfunctional N-chloramide derivatives of homo-or copolymers of acrylamide or methacrylamide. These may be copolymers of methacrylamide and acrylamide; or of either of these with any of styrene, methylstyrene, dimethylstyrene, chlorostyrene and alkylacrylate. Preferred alkylacrylate include methyl-, methylmeth-, ethyl-, ethylmethyl-, butylmeth-, hexyl-, hexylmeth-, decyl-, decylmeth-, dodecyl- and dodecylmeth- species. The derivatives may be cross-linked by divinylbenzene or divinylether.

Abstract: A process is disclosed for making polyfunctional N-chloramide derivatives of homo--or copolymers of acrylamide or metharylamide wherein a homo--or copolymer of acrylamide or methacrylamide is chlorinated by means of chloride in a dilute aqueous suspension of a mineral acid at a temperature of 0.degree. to 40.degree. C.

Abstract: Bis-N-chloramides of saturated aliphatic dicarboxylic acids are prepared by chlorinating a saturated aliphatic dicarboxylic diamide, the aliphatic residue of which has 4 to 40 carbon atoms, in an aqueous inorganic acid medium, at a temperature between 0.degree. and 40.degree. C.; the chlorination is advantageously carried out in presence of an inorganic salt.

Abstract: An improved process for the preparation of nitrosobenzene by catalytically reducing nitrobenzene is disclosed. The improvement comprises performing the reduction in the absence of a reducing agent.

Abstract: A process for the preparation of 2-mercaptobenzothiazole is disclosed. The process comprises heating a reaction mixture comprising nitrosobenzene, hydrogen sulfide and carbon disulfide in a molar ratio of about 1:1.5 to 4:1 to 3, respectively, to a temperature from about 200 to about 300.degree. C., for a time sufficient to convert at least a portion of the reactants into 2-mercaptobenzothiazole. In an alternative process, there is first reacted nitrosobenzene with hydrogen sulfide in a molar ratio of about 1:1.5 to 4, at a temperature from about 20 to about 100.degree. C. for a period of time sufficient to substantially reduce the nitrosobenzene, and subsequently reacting the resulting product mixture with from about 1 to about 3 mole equivalents of carbon disulfide per mole of originally charged nitrosobenzene, at a temperature from about 200.degree. C. to about 300.degree. C.