Abstract: A process for the recovery of minerals from an ore or concentrate containing the same wherein the minerals are recovered in a froth from an aqueous pulp containing the ore or concentrate and wherein one or more mineral flotation agents are employed in the aqueous pulp to control the type of minerals in the froth is provided. The mineral flotation agents used in carrying out the process comprise compounds formed by the addition of hydrogen sulfide to dicyclopentadiene.

Abstract: A water soluble lubricating additive for water-based fluids used in metalworking operations comprising a polyoxyalkylene sulfur compound selected from the group consisting of alkyl polyoxyalkylene sulfides, alkyl polyoxyalkylene sulfoxides and mixtures thereof. In an alternate embodiment of this invention, dithiodiglycol may be combined with a polyoxyalkylene sulfur compound selected from the group consisting of alkyl polyoxyalkylene sulfides, alkyl polyoxyalkylene sulfoxides and mixtures thereof to produce said water soluble lubricating additive.

Abstract: A catalyst system consisting essentially of a cobalt salt of a carboxylic acid, an alkali or alkaline earth metal hydroxide, and an alkanol is set forth and has been employed to oxidize a mercaptan to a disulfide.

Abstract: Novel metal-working process and aqueous metal-working fluids are provided. The aqueous metal-working fluids contain at least one N,N'-dilactam disulfide as an extreme pressure (EP) additive.

Abstract: Dimercaptodihydroxy alkanes are used as a curing agent for epoxide resins and as ore flotation agents.

Abstract: Dimercaptodihydroxy alkanes, such as 1,10-dimercapto-2,9-dihydroxydecane, are used as a curing agent for epoxide resins and as ore flotation agents.

Abstract: A metalworking composition containing 2-hydroxyethyl-(3-chloro-2-hydroxypropyl)sulfide in an aqueous medium. A method for enhancing the extreme pressure lubricating properties of an aqueous metalworking composition by admixing therein 2-hydroxyethyl-(3-chloro-2-hydroxypropyl)sulfide.

Abstract: Novel compositions are provided for the cleaning and inhibiting corrosion of metallic surfaces. The cleaning composition has an active ingredient consisting of at least one sulfur containing compound selected from the group consisting of a bis(N-2 pyrrolidonyl), an (N-2 pyrrolidonyl), or a bis(N-succinimidyl) sulfur-containing compound.

Abstract: A novel composition and process are provided for cleaning metallic surfaces. The aqueous cleaning composition comprises an effective amount of at least one thiomorpholine compound represented by the formula: ##STR1## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, and R.sub.8 can be hydrogen or any hydrocarbyl radical having from 1 to 3 carbon atoms and where the total number of carbon atoms in R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, and R.sub.8 not to exceed about 10 carbon atoms; and where R.sub.9 is hydrogen or any hydrocarbyl radical having from 1 to 8 carbon atoms, metal hydroxide, and water soluble surfactant.

Abstract: Silica-reinforced rubber compositions are prepared employing a mercaptan-substituted phosphonate as a coupling agent. Preparation and use of the mercaptan-substituted phosphonate coupling agent is illustrated using dimethyl 3-mercaptopropylphosphonate and a butadiene/styrene emulsion polymerized copolymer reinforced with a precipitated hydrated silica.

Abstract: A novel composition and process are provided for cleaning metallic surfaces. The cleaning composition comprises an effective amount of at least one sulfur containing compound selected from the group consisting of a dialkylamino dithiocarbamic acid, a mercapto alkanone, or a trimethylene ring sulfur compound.

Abstract: Silica-reinforced rubber compositions are prepared employing a mercaptan-substituted phosphonate as a coupling agent. Preparation and use of the mercaptan-substituted phosphonate coupling agent is illustrated using dimethyl 3-mercaptopropylphosphonate and a butadiene/styrene emulsion polymerized copolymer reinforced with a precipitated hydrated silica.

Abstract: The formation of polysulfone polymer during the synthesis of sulfolenes from conjugated dienes and sulfur dioxide is reduced by the incorporation of a small, effective amount of a mono- and/or dialkenyl amine.