Abstract:
A method for producing aromatic amines such as N-phenyl-p-phenylenediamine is disclosed wherein an amine substituted aromatic such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of a preferred trisodium pentacyano ferrate(II) complex containing various water soluble ligands, such as ammonia, mono alkyl amine, dialkyl amines, and trialkyl amines. The complex is subsequently catalytically reduced by hydrogenation using certain heterogeneous metal catalysts to yield the desired aromatic amine.
Abstract:
The physical properties of diacetin fats such as diacetopalmitin, diacetostearin, and diacetoarachidin, diacetobehenin are modulated by mixing them with about 10% to about 16% crystal modifier fats that are triglycerides bearing one short C.sub.2 to C.sub.4 acid residue and two long, saturated C.sub.16 to C.sub.22 fatty acid residues per molecule. The modified diacetin fats, which exhibit improved snap, gloss, hardness, bloom resistance, and mold release, are suitable for use in edible coatings, especially confectionery coatings.
Abstract:
Novel N-alkyl-p-quinonediimino triazine compounds are disclosed which are useful as antiozonants for unsaturated high polymers. The compound may be prepared by oxidizing a 2,4,6-tris(N-alkyl-p-phenylenediamino) 1,3,5-triazine with a neutral or basic oxidizing agent and isolating the product.
Abstract:
Disclosed are tris-substituted 1,3,5-triazine compounds having at least one (N-alkyl-p-phenylenediamino) group on the triazine ring. The preferred compositions are tri-substituted with the alkyl p-phenylenediamino group. The preferred compounds may be prepared by reacting N-alkylphenylenediamine with a cyanuric halide.
Abstract:
A process is provided for making benzimidazoles having the formula ##STR1## wherein Y is oxygen, sulfur or --NH; R.sup.1 is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl, C.sub.7 -C.sub.9 aralkyl or C.sub.7 -C.sub.9 alkaryl; R.sup.2 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen; and n is 1 or 2; comprising reacting a compound having the formula ZYCN, wherein Z is an alkali metal or ammonium moiety and Y has the meanings above; with a compound having the formula ##STR2## wherein R.sup.1, R.sup.2 and n have the meanings above, in the presence of a C.sub.4 -C.sub.10 alkanol and, except when Z is NH.sub.4, in the presence of an acid.
Abstract:
A process for preparing p-nitrosodiphenylamine hydrochloride is provided from N-nitrosodiphenylamine and hydrogen chloride. The product is prepared in the absence of an aromatic solvent and using a solvent consisting essentially of aliphatic C.sub.5 -C.sub.10 alcohol.
Abstract:
This invention is directed to 1,5-bis(3',5'-dihydrocarbyl-4'-hydroxyphenyl)pentyl derivatives, including the 3-pentyl ester, amine and amide compounds. It also deals with the stabilization of organic materials by incorporating such compounds therein, either alone or in combination with a dialkyl 3,3'-thiodipropionate or a tri(alkaryl)phosphite.
Abstract:
Compositions comprising substituted phenylenediamine and substituted triazine compounds, including tris-(N-alkyl-p-phenylenediamino)-1,3,5-triazines. The compositions are liquid and do not sinter during storage or transportation. The compositions are used as antiozonants for elastomer articles, including rubber articles.
Abstract:
Compositions comprising substituted phenylenediamine and substituted triazine compounds, including tris-(N-alkyl-p-phenylenediamino)-1,3,5-triazines. The compositions are liquid and do not sinter during storage or transportation. The compositions are used as antiozonants for elastomer articles, including rubber articles.
Abstract:
A method for producing aromatic amines such as N-phenyl-p-phenylenediamine is disclosed wherein an amine substituted aromatic such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of a preferred alkali metal pentacyano ferrate(II) complex made using water soluble ferrous salts with a non-oxidizing anion, preferably, ferrous sulfate, and containing various water soluble ligands, such as ammonia, mono alkyl amine, dialkyl amines, and trialkyl amines. The complex is subsequently catalytically reduced by hydrogenation using certain heterogeneous metal catalysts to yield the desired aromatic amine.