Abstract: New chlorinated s-triazine trione compositions are prepared in essentially theoretical yields and with essentially no waste disposal requirements.

Abstract: The present invention is an improvement in a process for the production of sodium dichloroisocyanurate (SDCC) wherein both an aqueous reaction mixture containing SDCC and the by-product NCl.sub.3 and a gaseous phase containing NCl.sub.3 vapor are formed, said improvement comprising passing an inert gas through said aqueous phase to remove said NCl.sub.3 vapor from said gaseous phase.

Abstract: Novel hydrated, potassium-containing chloroisocyanurate complex compounds and mixtures thereof are described together with processes for preparing the same. The novel compounds of this invention, namely, [(mono-trichloro,) tetra-(monopotassium dichloro,)] penta-isocyanurate tetrahydrate, and hydrated (mono-trichloro,) (monopotassium dichloro,) di-isocyanurate and mixtures thereof, are prepared by reacting in a substantially dry state trichloroisocyanuric acid and potassium dichloroisocyanurate monohydrate, the reaction products being determined by the molecular ratio of the starting materials. These novel compounds are resistant to burning, will not undergo self-propagating decomposition when subjected to a source of intense heat, as for example a hot wire, and are useful as a source of available chlorine in, for example bleaching, sterilizing, oxidizing and disinfecting operations.

Abstract: Preparing a crystalline [(mono-trichloro) tetra(monopotassium dichloro)] penta-isocyanurate by reacting an unsubstituted or amino substituted triazine with at least stoichiometric amounts of potassium hypochlorite in an aqueous medium at a temperature of 35.degree. to 70.degree. C and at a pH value of 3.2 to 5.7 for less than about five minutes.

Abstract: A device for dispensing solid into a liquid medium. The device utilizes a funnel with a vortical stream therein for feeding solids into a reaction zone. A portion of the contents of the reaction zone are recycled to supply the fluid for the vortical stream. The device finds particular use in dispersing dry particulate blends of isocyanuric acid and trichloroisocyanuric acid into a reaction slurry.

Abstract: Alkali metal salts of dichloroisocyanuric acid are produced by the reaction of a monoalkali metal cyanurate with an alkali metal hypochlorite and chlorine in an aqueous medium while maintaining the pH of the reaction mixture in the range of from about 6.0 to about 7.5 and recovering the solid alkali metal dichloroisocyanurate produced thereby.The products are useful as bleaching or sanitizing agents.

Abstract: Polychloroisocyanurate products are produced in a continuous process which reacts a cyanuric acid component with a chlorinating agent in a reaction mixture to which a purge gas is fed to remove in an effluent gas, any nitrogen trichloride produced along with other by-products. The effluent gas is fed to a gas analyzer such as a gas chromatograph which determines the concentration of NCl.sub.3 present and compares it with a predetermined upper limit. If this upper limit is equalled or exceeded, the gas analyzer activates means to flood the reaction mixture with purge gas to prevent explosive amounts of nitrogen trichloride from being present in the reaction mixture. The gas analyzer may also control the feed rate of the cyanuric acid component and the chlorinating agent.The pH of the reaction mixture is also continuously measured in a pH analyzer having means to control the flow rate of the purge gas and reactants should the predetermined pH limits for the reaction be attained or exceeded.

Abstract: Chloro-s-triazine triones having improved crystal properties are obtained by reacting cyanuric acid, alkali metal hydroxide and chlorine in an aqueous reaction mixture in the presence of a crystal modifier selected from the group consisting of alkali metal disulfonates of alkylated diphenyloxide wherein the alkyl group contains from about 8 to about 14 carbon atoms, and alkylated diphenyloxide disulfonic acid wherein the alkyl group contains from about 8 to about 14 carbon atoms.

Abstract: Copolymers are prepared from .omega.-bromoalkyl ester of acyclic unsaturated dicarboxylic acids and compounds copolymerizable therewith. The copolymers are useful as flame retardant plasticizers for polymers.

Abstract: Trichloroisocyanuric acid is produced by the reaction of a symmetrical triazine compound selected from the group consisting of ammelide, chlorosubstituted ammelide, ammeline and chlorosubstituted ammeline, with dichlorine monoxide in a gaseous mixture with a diluent gas. The gaseous mixture is comprised of from about 1 to about 30 percent by volume of dichlorine monoxide.

Abstract: Reactive disazo dyestuffs of the following formula are disclosed. ##STR1## or --NHR wherein w.sub.1, w.sub.2, w.sub.3, and w.sub.4 represent hydrogen or methyl; Q represents --SO.sub.2 -- or --CO--; k, r, l and q represent 1 or 0; R represents hydrogen; --COCH.sub.3 ; ##STR2## which may be substituted by methyl or chloro; phenyl which may be substituted by sulfo or carboxy; or --CH.sub.2 CH.sub.2 OH. Hal represents chloro or bromo. X represents amino; mono- or di-alkylamino having from 1 to 3 carbon atoms; mono- or di-hydroxyalkylamino having from 1 to 3 carbon atoms; anilino which may be substituted by a sulfo group, carboxy group, methyl, ethyl, nitro, methoxy, ethoxy, acetylamino, sulfamoyl, .beta.-sulfatoethylsulfonyl, cyano, chloro, or bromo; N-methylanilino; carboxymethylamino; .beta.-sulfoethylamino; N-(.beta.

Abstract: The present invention relates to a process for crosslinking hydrophilic colloids, preferably gelatine and most preferably gelatine present in a photographic material. A 1,3,5-triazine compound containing an NC--N.sup.- -- substituent bound to the triazine ring is incorporated into the hydrophilic colloid as a crosslinking agent.