Abstract: Cobalt(II)-bearing aqueous solutions may be treated with an extractant comprising an organic-soluble phosphinic acid, or a salt thereof, to separate the cobalt(II) from the aqueous solution. Typical extraction techniques compatible with the instant process include liquid-liquid extraction employing either mixer settlers or columns, packed beds of supported extractants as in ion exchange, liquid membrane extraction and selective supported membrane extraction.

Abstract: Novel compounds of the formula ##STR1## are produced by reacting tris(dialkylamino)hydridosilanes with alkanols under specified conditions. The novel compounds are useful as analytical tools, as coupling agents, and in organic synthesis.

Abstract: An effective amount of a copolymer of maleic acid or anhydride and allyl sulfonic acid when added to the water to be treated provides increased inhibition of scale formation in evaporative desalination units.

Abstract: Alkylaryl hydrocarbons having at least eleven carbon atoms, when used either alone or in combination with known sulfide collectors, result in enhanced recovery and selectivity when used as collectors for sulfide minerals. These alkylaryl hydrocarbons are generally derived from the alkylation of aromatic compounds with the appropriate olefin in synthetic processes. Isopropyl naphthalene appears foremost among these compound as an effective sulfide collector.

Abstract: This invention relates to the treatment of glass fibers and to compositions suitable for use in the treatment of glass fibers which comprise acid salts of polyester aminoorganosilanes and polyalkylene oxide polymers.

Abstract: Cellulosic paper sheets interleaved with sheets of a thermoplastic material having a glass transition point below about 100.degree. C. and a melting point of about 125.degree. C. or more provide a cushion for use in laminating operations. The thermoplastic sheets employed in the cushion have an individual thickness ranging from about 2 to 20 mils and a combined thickness of at least 5 mils. Such a cushion provides a long-term, reuseable cushion for laminating operations.

Abstract: Employment of a latex emulsion prepared from a hydrocarbon, animal or vegetable based oil with a hydrophobic water-in-oil emulsifier and a hydrophilic surfactant in the froth flotation of coal improves coal recovery without increasing the ash content. The emulsifier employed should have an HLB value of 5.0 or less while the surfactant should have an HLB value of 9.0 or higher.

Abstract: Novel mildewcidal compounds of the formula (RO).sub.3 Si(CH.sub.2).sub.3 XOAr wherein R is lower alkyl, X is --NHC(O)-- or --S(CH.sub.2).sub.2 C(O)--, and Ar is aryl, and their use in latex paints.

Abstract: Conventional starches are chemically crosslinked for use as selective depressants in the flotation of non-sulfide mineral ores. The process employing these crosslinked starches requires lower reagent dosages, exhibits improved selectivity and recovery and exerts a lower load on existing waste treatment facilities. The crosslinking agents employed are bifunctional and are used in sufficient quantities to result in 500 to 10,000 anhydroglucose units per crosslink.

Abstract: An improved process for the filtration of phosphoric acid wherein the prefilt phosphoric acid produced from the "wet process" is conditioned with a flocculant and a dispersant and thereafter filtered to concentrate the acid.

Abstract: Novel polymer/polyisocyanate compositions made by polymerizing at least one ethylenically unsaturated monomer in situ in a blend of a first organic polyisocyanate and a stabilizer. The stabilizer comprises a polyoxyalkylene polyol having a number average molecular weight of at least 4000; an isocyanato terminated prepolymer formed by reacting the polyoxyalkylene polyol and a second organic polyisocyanate with the proviso that the isocyanato terminated prepolymer and the first organic polyisocyanate provide greater than 25 equivalents of isocyanato groups per equivalent of hydroxyl groups; a polymer/polyol formed using the polyoxyalkylene polyol; a polymer/prepolymer formed using the polyoxyalkylene polyol with the proviso indicated for the prepolymer above; or a modified polyol containing an ester group formed using the polyoxyalkylene polyol.

Abstract: Incorporating abrasive materials into the resin impregnated print sheet and thereafter applying a coating of a fully hydrolyzed polyvinyl alcohol modified melamine-formaldehyde resin results in an effective abrasion-resistant decorative laminate which eliminates the necessity for an overlay sheet containing abrasive materials and cellulosic fibers.

Abstract: Free Radical Addition of Mono 2,4,4'-trimethylpentylphosphine to cyclohexene followed by the oxidation of the 2,4,4'-trimethylpentyl, cyclohexylphosphine with two moles of hydrogen peroxide is employed to prepare 2,4,4'-trimethylpentyl, cyclohexylphosphinic acid. The 2,4,4'-trimethylpentyl, cyclohexylphosphinic acid is useful as a cobalt extractant.

Abstract: The use of a fully-hydrolyzed polyvinyl alcohol modified melamine-formaldehyde resin coating containing finely divided metallic powder in a decorative laminate eliminates the necessity for thin metallic foils without thereby imparting any deleterious effects to the laminate itself.

Abstract: A process for preparing a fully hydrolyzed polyvinyl alcohol modified melamine-formaldehyde resin useful in decorative laminates is disclosed. The process comprises reacting melamine, formaldehyde, and fully hydrolyzed polyvinyl alcohol at 80.degree.-90.degree. C. until the reaction product has a water tolerance of about 300% to 1000% in 5.degree. C. water. The mole ratio of melamine to formaldehyde is from about 1:1.5 to about 1:1.8, respectively.

Abstract: The use of a fully-hydrolyzed polyvinyl alcohol modified melamine-formaldehyde resin coating for the print sheet in a decorative laminate eliminates the necessity for an overlay sheet without thereby imparting any deleterious effects to the laminate itself.

Abstract: Dialkylphosphine is added to a mixture of sulfur and water at 50.degree.-90.degree. C. After approximately 25% of the dialkylphosphine is charged, an alkali, such a sodium hydroxide, is added to neutralize the dialkyldithiophosphinic acid that forms. At this elevated temperature the neutralization reaction proceeds rapidly thereby preventing any alkali from reacting with the sulfur to form sulfides. Dialkyldithiophosphinate yields from this process are on the order of about 95-98%.

Abstract: 2-Alkenylimidazoles or the corresponding 1,3-dialkyl-2-alkenylimidazolium salts are homo- or copolymerized employing free radical catalysts.

Abstract: A combination of an ester of a mercapto carboxylic acid and an organic dithiol is a synergistic promoter for froth flotation of zinc sulfide ores.

Abstract: Low molecular weight hydrolyzed polymers or copolymers of the general structure: ##STR1## exhibit excellent depressive action in the flotation of non-sulfide mineral ores thereby resulting in improved selectivity and recovery. The low molecular weight, partially hydrolyzed polymers or copolymers perform depressing action without resulting in any associated flocculation in the flotation system. The partially hydrolyzed polymers or copolymers can be combined with other known depressing agents for non-sulfide ores, such as starch, dextrin, gum and the like, to obtain equivalent or improved selectivity and recovery than would be obtained using these depressants alone.