Abstract: Provided is a new process useful for preparing arylsulfonyl halides, which comprises the addition or drowning of halosulfonation reaction products, produced by the reaction of aromatic compounds (arenes), with excess halosulfonic acid, into C.sub.3 -C.sub.6 aliphatic ketones, preferably acetone, isopropyl alcohol, or mixtures thereof, instead of drowning into water as is known in the art of aromatic sulfonyl chloride preparation. Less heat of reaction is observed, thus making the drowning of the halosulfonation reaction mixture safer and more controllable. Further, less hydrogen chloride gas is evolved from the drowning mixture and generally more highly pure arylsulfonyl chlorides are produced.

Abstract: Provided is an improved process for the synthesis of 1-cyano-3H-dibenz[f,ij] isoquinoline-2,7-dione compounds, and process exhibiting improvements in quality of products, safety, fewer environmental concerns and economics when compared to presently known processes. The compounds are useful as colorants for polyesters, and selected compounds and when combined with small quantities of certain red colorants are particularly efficacious as blue toners for polyesters.

Abstract: Provided is an improved process for the synthesis of 1-cyano-3H-dibenz[f,ij] isoquinoline-2,7-dione compounds, and process exhibiting improvements in quality of products, safety, fewer environmental concerns and economics when compared to presently known processes. The compounds are useful as colorants for polyesters, and selected compounds and when combined with small quantities of certain red colorants are particularly efficacious as blue toners for polyesters.

Abstract: Disclosed is a process for the preparation of 1-amino-4-bromoanthraquinones by the bromination of the corresponding 1-aminoanthraquinone wherein a 1-amino-anthraquinone is contacted with elemental bromine in the presence of a carboxylic acid solvent and added hydrobromic acid. The process is not as complicated as known processes and produces lower amounts of isomeric 1-amino-2-bromoanthraquinones.

Abstract: Ink compositions which are aqueous dispersions of a water-dispersible polymer, a Disperse dye, and a dihydroxybenzophenone or derivative thereof are stable with respect to precipitation.

Abstract: Disclosed is a process for the preparation of bis-acylamido aromatic compounds by reacting certain arylene dihalides with certain arylene dihalides in the presence of a copper catalyst. The process may be utilized in the synthesis of arylenediamines.

Abstract: Disclosed is a novel process for the preparation of the sulfate salt of 2-amino-5-alkylthio-1,3,4-thiadiazoles, which comprises reacting 2,5-dithiobiurea with a dialkylsulfate. Derivatives of compounds produced by this novel process are useful as chemical synthetic intermediates in the preparation of organic dyes and pharmaceuticals.

Abstract: Disclosed is a novel process for the preparation of 2-amino-5-nitrothiazole which comprises the steps of (1) halogenating (chlorinating or brominating) a N,N-dialkyl-2-nitro-etheneamine having the formula O.sub.2 NCH.dbd.CHNR.sup.1 R.sup.2 to obtain a compound(s) having the structure ##STR1## (2) reacting (I) with thiourea to obtain a compound having the formula ##STR2## and (3) treating (II) with water.