Abstract: The oxidation stability of a refined hydrocarbon oil can be sigificantly improved by adding at least one cyclic sulfide and at least one aromatic compound to said oil.

Abstract: An extractive distillation process for selectively separating an ethylenically unsaturated hydrocarbon from a mixture containing hydrocarbon liquids having similar boiling points wherein an amine acts as a selective solvent and polymerization inhibitor. For example, styrene can be separated from a mixture of styrene and o-xylene using aminoethyl piperazine as the solvent for the distillation.

Abstract: Certain substituted diaryl amines are used to inhibit the polymerization of ethylenically unsaturated monomers; for example, unsaturated carboxylic acids and derivatives thereof.

Abstract: The invention relates to copolymers of esters of acrylic acid or methacrylic acid with unbranched alcohols that contain at least 16 C atoms, and maleic anhydride, and also the use of these copolymers as crystallization inhibitors in paraffin-bearing crude oils.

Abstract: Hydrocarbon processing equipment is protected against fouling during the processing of hydrocarbons at elevated temperatures by adding to the equipment small amounts of the N,N'-dimer of phenothiazine or a substituted phenothiazine.

Abstract: A cleansing agent for lithographic printing plates having substantially reduced aromatic components. The plate cleaner comprises an aqueous mixture of substantially aliphatic hydrocarbons, a composition comprising one or more non-ionic emulsifying agents and/or non-ionic surfactants, an alkaline salt electrolyte and an optional organic or inorganic acid.

Abstract: Vinyl aromatic compounds are stabilized against undesired polymerization by adding to the vinyl aromatic compounds small amounts of the N,N'-dimer of phenothiazine or a substituted phenothiazine.

Abstract: Vinyl aromatic compounds are stabilized against undesired polymerization by adding to the vinyl aromatic compounds small amounts of at least one N,N-diarylhydroxylamine and at least one N,N' dimer of phenothiazine or substituted phenothiazine.

Abstract: In the catalytic dehydrogenation of p-ethyltoluene to p-methylstyrene, popcorn polymer forms and builds up in the condenser, shortly plugging it. This is prevented by adding minor amounts of H.sub.2 S continuously to the gaseous product effluent entering the condenser.

Abstract: The growth of butadiene "popcorn" polymer seeds in butadiene separation processes is inhibited by treatment of the butadiene with carbon disulfide or elemental phosphorus.

Abstract: The disclosure relates to a composition suitable for use in mechanical power transmission devices. It has as its principal component a hydrocarbon oil which has from 19 to 30 carbon atoms, inclusive, and three six-membered carbocyclic rings and consists of a mixture of compounds having the following formula: ##STR1## wherein R.sup.1 is a divalent straight or branched chain radical C.sub.y H.sub.2y where y is an integer of 1 through 3; R.sup.2 is a straight chain radical C.sub.z H.sub.2z where z is an integer of 1 through 3; R.sup.3, R.sup.4, and R.sup.

Abstract: A control cable comprising an inner cable, a conduit and a lubricating layer interposed between, formed from a composition of high density polyethylene powders or pellets and a fluoro-alkylated silicone oil, thereby improving the slippage and the wear resistance of an inner cable, and being superior to endurance over a long period of time.

Abstract: Hydrocracked lubricating oils are effectively stabilized against deterioration caused by light by the inclusion of at least one of certain substantially aliphatic amine components. Such substantially aliphatic amine components provide outstanding inhibition relative to aromatic amine components.

Abstract: A method for stabilizing acetylene against explosive decomposition comprising mixing together with the acetylene a chemical free radical scavenging agent chosen from the group consisting of nitric oxide, hydrogen chloride, hydrogen bromine, hydrogen iodide and vinyl bromine as well as mixtures thereof.