Abstract: Prepare high purity perbrominated aromatic compounds, especially decabromodiphenyl oxide, by adding an aromatic compound to a mixture comprising an organic solvent, a catalyst, and a slight stoichiometric excess of bromine, at a low initial reaction temperature.

Abstract: In the production of polyether polyols, the neutralization of alkaline catalysts using formic acid such that no precipitate forms.

Abstract: Hydroxyaromatic compounds are amido-alkylated or cyano-alkylated to form the corresponding compounds by:(a) heating said compounds with an alkylating agent in the presence of water and a catalyst, e.g., benzyltrimethylammonium chloride;(b) adding an alkaline agent, e.g., NaOH, to the heated mixture of (a); and(c) continuing to heat the resulting mixture until the corresponding amido- or cyano-alkylated compound is formed.

Abstract: Separate isomers via supercritical gas extraction.

Abstract: Novel flame retardant compositions, which are useful in the preparation of rigid polyurethane foams, comprise a sucrose polyol, an aromatic polyester polyol, and a brominated, hydroxyl-containing pentaerythritol.

Abstract: Electrolytically prepare para-chloroalkyl aromatic compounds, such as para-chlorotoluene, using a potential of less than 1.5 volts, as measured against a Ag/Ag.sup.+ reference electrode, and an anode which is free of cyclodextrin.

Abstract: An improved composition for inhibiting the corrosion of ferrous metals in acidic environments, especially in the presence of H.sub.2 S.

Abstract: A process to form polyethers from monoepoxides in the presence of a catalyst, said catalyst being formed from a photoactivated rhenium carbonyl coordination compound precursor.

Abstract: 3,4,5-Trithiatricyclo[5.2.1.0.sup.2,6 ]decanes and derivatives are prepared in high yield by contacting a bicyclo[2.2.1]hept-2-ene compound and sulfur in the presence of a solvent, and a catalytic amount of sulfide ions.

Abstract: Prepare vinyl aromatic compounds in a fluidized bed by oxydehydrogenation in the presence of an alkaline earth metal-nickel phosphate catalyst.

Abstract: Alkyl or aryl 1,1-difluoroalkyl ethers, e.g., 1,1,2-trifluoro-2-chloro-2-iodoethyl phenyl ether, are prepared by reacting an alkoxide or phenoxide with a 1,1-difluoro-1,2-dihaloethane (with the proviso that halo is not fluoro and at least one of the halo substituents is bromo or iodo) in an organic solvent at temperatures ranging from about -30.degree. C. to about 100.degree. C. These compounds may be dehalogenated with zinc to form the corresponding vinyl ethers.The reaction of halogen derivatives of fluorocarbons with nucleophiles is dramatically facilitated by a bromo or iodo substituent in the beta position.

Abstract: The compound 1,1,2-trichloro-2,2-difluoroethane is prepared in high yield by contacting 1,1-difluoroethylene and chlorine in the presence of a free radical initiator in a liquid reaction medium.

Abstract: Cyclic nitrile sulfites are prepared by reacting the corresponding amide with sulfur dioxide in a solvent and in the presence of an oxidizing agent, e.g., lead tetraacetate, and a catalyst, e.g., triethylamine.