Abstract: Biocidal compositions useful in controlling the growth of bacteria and fungi in aqueous surface-coating compositions are aqueous solutions that contain from 20 percent to 80 percent by weight of monocyclic polyoxymethyleneoxazolidines having the structural formula ##STR1## wherein R represents hydrogen, alkyl of 1 to 6 carbon atoms, phenyl, halophenyl, or --(CH.sub.2 O).sub.m CH.sub.2 OH; each R' represents alkyl of 1 to 6 carbon atoms or --CH.sub.2 OH; m represents a number in the range of 0 to 2; and n represents a number in the range of 1 to 4.

Abstract: Substituted indazoles that have the structural formula ##SPC1##Wherein X represents halogen, trihalomethyl, nitro, -SO.sub.2 R, cyano, acoyl, acoylamino, aroylamino, or -COOR'; R represents hydroxyl, halogen, alkyl, haloalkyl, alkylamino, phenyl, or substituted phenyl; R' represents hydrogen, halogen, alkyl, haloalkyl, phenyl, or substituted phenyl; and n represents a number in the range of 1 to 4 are prepared by the direct nitrosation of the corresponding 2-methylacetanilide with an alkali metal nitrite or alkaline earth metal nitrite under conditions of controlled acidity in the presence of a dehydrating agent at a temperature in the range of 50.degree. to 120.degree. C.

Abstract: Cellular vinyl halide resin compositions are prepared by adding to a vinyl halide resin plastisol a chemical blowing agent, such as azodicarbonamide, and an activator for the blowing agent that contains a zinc salt and a strontium salt and heating the resulting composition at a temperature at which the blowing agent will decompose and the vinyl halide resin will fuse.

Abstract: Vinyl chloride is removed from gas streams that contain from 10 ppm to 100 mole percent of vinyl chloride by passing the gas stream through a bed of coconut shell-derived or petroleum-derived activated carbon. The exit gas stream contains less than 5 ppm of vinyl chloride.The vinyl chloride-saturated carbon is treated with steam at 100.degree.-150.degree.C. to desorb the vinyl chloride, which is then recovered. The wet carbon is contacted with an inert gas at 90.degree.-150.degree.C. until its water content is less than 1% by weight; the hot dry carbon is cooled to ambient temperature by contacting it with a cold inert gas. The regenerated activated carbon is then used to remove additional vinyl chloride from the gas stream.The vinyl chloride adsorption-carbon regeneration cycle can be repeated for long periods of time without loss of adsorptive capacity of the activated carbon or formation of polyvinyl chloride on the surface of the carbon.

Abstract: Vinyl chloride is removed from gas streams that contain from about 10 ppm to 1000 ppm of vinyl chloride by contacting the vinyl chloride in the gas stream with ozone in the presence of activated carbon. The gas streams treated in this way contain less than about 1 ppm of vinyl chloride and no detectable amount of ozone or ozonides.

Abstract: An emulsion suitable for use as a flame-retardant for textile materials is prepared by dissolving 1,1,2,3,4,4-hexabromobutene-2 in an N-alkylpyrrolidinone in which the alkyl group has from 1 to 5 carbon atoms to form a solution containing from 15 to 50% by weight of 1,1,2,3,4,4-hexabromobutene-2, diluting this solution with an aromatic hydrocarbon, and mixing the resulting solution with a non-ionic emulsifying agent and water to form the emulsion.

Abstract: Loss-of-dry inhibitors for surface-coating compositions containing oxidizable organic vehicles comprise metal salt solutions that contain 0.05 to 1.5% by weight of cobalt, 0.5 to 3.5% by weight of calcium, and 0.5 to 5.0% by weight of zinc or zirconium. The metals are present in the loss-of-dry inhibitor as salts of branched-chain aliphatic monocarboxylic acids having 6 to 14 carbon atoms, cycloaliphatic monocarboxylic acids having 6 to 10 carbon atoms, or mixtures of these acids.

Abstract: Resinous compositions that have excellent melt flow characteristics and high impact resistance contain 70 to 90 percent by weight of a vinyl halide resin, 5 to 15 percent by weight of an elastomer that is a styrene-butadiene-alkyl methacrylate polymer or a partially cross-linked alkyl methacrylate polymer, and 5 to 15 percent by weight of a thermoplastic resin that is a styrene-acrylonitrile copolymer or a styrene-acrylo-nitrile-alkyl methacrylate terpolymer.

Abstract: Hexabromobutadiene is used to impart fire-retardance to epoxy resins, polyesters, and other thermosetting organic resins that are normally susceptible to burning.

Abstract: Biocidal compositions useful in controlling the growth of bacteria and fungi in aqueous surface-coating compositions are aqueous solutions that contain from 20 percent to 80 percent by weight of a monocyclic polyoxymethyleneoxazolidine having the structural formula ##EQU1## wherein R represents hydrogen, alkyl of 1 to 6 carbon atoms, phenyl, halophenyl, or --(CH.sub.2 O).sub.m CH.sub.2 OH; each R' represents alkyl of 1 to 6 carbon atoms or --CH.sub.2 OH; m represents a number in the range of 0 to 2; and n represents a number in the range of 1 to 4. The polyoxymethyleneoxazolidines preferably contain a total of not more than six oxymethylene units (--CH.sub.2 O--) in one or more ring substituents.

Abstract: Water, ammonia, and certain other reactive impurities are removed from gas streams that contain such complexible ligands as olefins, acetylenes, aromatics, and carbon monoxide by contacting the gas streams with a purification medium that comprises (a) a bimetallic salt complex having the generic formula,M.sub.I M.sub.II X.sub.n.sup.. Aromaticwherein M.sub.I is a Group I-B metal, M.sub.II is a Group III-A metal, X is halogen, n is the sum of the valences of M.sub.I and M.sub.II, and Aromatic is a monocyclic aromatic hydrocarbon having 6 to 12 carbon atoms, (b) a monocyclic aromatic hydrocarbon having 6 to 12 carbon atoms, and (c) at least one product of the reaction of the impurities with said bimetallic salt complex.

Abstract: Vinyl chloride is removed from wet cakes that comprise a vinyl chloride polymer, vinyl chloride, and water by contacting the wet cakes with steam, preferably at atmospheric pressure and at a temperature in the range of 100.degree. to 125.degree.C.

Abstract: 1,1,2,4-Tetrabromobutene-2 is an effective flame-retardant for wood.

Abstract: Biocidal compositions useful in controlling the growth of bacteria and fungi in aqueous surface coatings are aqueous solutions that contain from 20 percent to 80 percent by weight of a bicyclic polyoxymethyleneoxazolidine having the structural formula ##EQU1## wherein each R represents hydrogen, alkyl of 1 to 6 carbon atoms, phenyl, halophenyl, or --(CH.sub.2 O).sub.m CH.sub.2 OH; m represents a number in the range of 0 to 2; and n represents a number in the range of 1 to 4.

Abstract: A structural film that can be used in the vacuum packaging of meat comprises an ionomer layer bonded to a non-ionic polymer layer with a polyalkyleneimine at the interphase of the polymer layers.

Abstract: Polyurethanes are made fire-retardant by including in the reaction mixture aromatic polyisocyanates having halogen-containing side chains.

Abstract: Stable solutions that contain at least 7.5% by weight of dissolved chromium comprise an organic solvent and a mixture of chromium salts that contains at least one chromium salt of a straight-chain aliphatic monocarboxylic acid having 5 to 10 carbon atoms and at least one chromium salt of a branched-chain aliphatic monocarboxylic acid having 5 to 10 carbon atoms.

Abstract: 2,3-Dibromo-1-propanol of at least 99.5% purity is prepared in high yeilds by continuously adding bromine and allyl alcohol to a reactor that contains a reaction medium that is immiscible with 2,3-dibromo-1-propanol and inert to bromine and continuously removing 2,3-dibromo-1-propanol from the reactor.