Abstract: In a fluid catalytic cracking (FCC) process riser reactor effluent is rapidly separated into spent catalyst and hydrocarbon product. The separated hydrocarbon product is immediately quenched to an unreactive temperature in the absence of quenching spent catalyst. An increase in debutanized naphtha yield is achieved. By avoiding catalyst quenching, heat duty is saved in the catalyst regenerator.

Abstract: A safety apparatus has been found for controlling the release of flashing hydrogen fluoride in a hydrocarbon alkylation process. The safety apparatus comprises containment baffles enclosing major process vessels. The safety apparatus may be used in combination with a liquid onium polyhydrogen fluoride complex to substantially reduce the vapor cloud produced from a leaking process vessel.

Abstract: An epoxy resin composition comprises the cured reaction product of an epoxy resin and a lactone-imidazole complex. For example, complexes of butyrolactone and caprolactone with 1-isopropyl-2-methyl imidazole were formed wherein the mole ratio of lactone:imidazole ranged from 1:1 to 2:1. The complexes are less reactive than the imidazole alone, giving them an extended pot life. The compositions are useful for making filament windings where an extended working time is required. Other applications include those in which it would be impractical to use the more reactive unmodified imidazole as the sole curing agent.

Abstract: A feedstock comprising 10 to 15 wt % used motor oil is subjected to delayed coking to yield coke and distillate fractions.

Abstract: A riser cyclone separator for rapidly separating catalyst from cracked hydrocarbon vapors in a fluid catalytic cracking process. The riser cyclone is provided with an annular port for drawing stripping gas into the riser cyclone to separate entrained catalyst and vent stripper gas from the regenerator vessel. The cyclone is inherently negative pressure to the reactor vessel.

Abstract: In a solvent refining process a naphthenic lubricating oil feedstock is solvent extracted to yield a primary aromatics-lean raffinate and a primary aromatics-rich extract. Polynuclear aromatic content of primary raffinate is controlled by manipulating extraction temperature and solvent dosage. Primary extract is separated (settled) to form a secondary raffinate and a secondary extract. Secondary raffinate is recycled to solvent extraction. The refractive index of secondary raffinate is controlled by manipulating settling temperature and antisolvent dosage. The refractive index of secondary raffinate is maintained at or below the refractive index of feedstock. An improved yield of primary raffinate of a specified polynuclear aromatic content is achieved.

Abstract: The invention is an epoxy resin adhesive composition. The composition comprises:A. An epoxy resin component; andB. A curative component comprising:a curing amount of a polyamine curing agent and 2 to 30 phr. of an adhesion enhancer of comprising a partially hindered polyetherpolyamine.The fast curing adhesive offers high lap shear strength and relatively high peel strength.

Abstract: A polyurea grease composition is prepared by reacting a diisocyanate with a monoamine and a diamine in the presence of a polyoxyethylene/polypropylene glycol copolymer having a molecular weight of 300 to 15,000 or an alkoxylated alkylene diamine having a molecular weight of 500 to 18,000. The resulting grease composition demonstrates resistance to water absorption and improved yield (low penetration number vs. high).

Abstract: A continuous process has been found for producing hydroxyacylated alkenyl-substituted mono- and bis- succinimides. The Mannich phenol coupled compositions are produced continuously as well. In the imidization reaction, an alkenyl succinic anhydride is contacted with a polyamine to form mono- and bis- polyamino alkenyl succinimides in continuous stirred tank reactor for a residence time of 1 to 3 hours. The reaction product is then, optionally Mannich base coupled. Finally, in the amidization, the mono- and bis- polyamino alkenyl succinimide is contacted with an acylating agent such as hydroxyacetic acid. Contacting is carried out in a continuous stirred tank reactor for a residence time of 3 to 6 hours. A hydroxyacylated alkenyl-substituted mono- and bis- succinimide product free of haze is produced in the absence of filtering, by reducing water continuously in all three reactors to a concentration of 0.4 wt %.

Abstract: An epoxy resin composition comprises the cured reaction product of an epoxy base resin and a curing agent mixture. The curing agent mixture comprises a di-primary amine and a carbamate which is the reaction product of the amine and a cyclic carbonate. The amine has a molecular weight of 60 to 400. Ethylene carbonate and propylene carbonate are the preferred carbonates. The preferred curative comprises a 1:1 to 2:1 molar amine:carbamate mixture.

Abstract: Spent or inactive alumina-supported catalysts removed from a catalytic hydrotreating process and having carbonaceous and metallic deposits thereon are reactivated. After a solvent wash to remove process oils, the spent catalyst is treated with an organic solvent, such as N-methyl-2-pyrrolidone, at a temperature of 200.degree. to about 500.degree. F. for a period of about 1 to about 12 hours to form the reactivated catalyst suitable for reuse in a catalytic hydrotreating process. Optionally, the solvent treated catalyst can be regenerated by contact with an oxygen-containing gas at a temperature of about 700.degree. to about 900.degree. F. to remove carbon deposits from the catalyst, or, alternatively, the solvent treated catalyst can be acid leached to remove undesired metals and then contacted with an oxygen-containing gas at an elevated temperature to remove carbon deposits.

Abstract: In a fluid catalytic cracking (FCC) process riser reactor effluent is rapidly separated into spent catalyst and hydrocarbon product. The separated hydrocarbon product is immediately quenched to an unreactive temperature in the absence of quenching spent catalyst. An increase in debutanized naphtha yield is achieved. By avoiding catalyst quenching, heat duty is saved in the catalyst regenerator.

Abstract: An improved method of controlling catalyst inventory in the reactor of an ebullated bed process has been discovered. Pressure differentials are measured to calculate a catalyst inventory characterization factor. This factor is calculated by means of a new algorithm. Aged catalyst is withdrawn and fresh catalyst added in an amount to reestablish the value of the factor. The catalyst to oil ratio is maintained despite changes in bed ebullation, gas and liquid holdups, oil residence time and conversion.

Abstract: A textile machine is lubricated with oil characterized as non-staining to nylon textile. The lubricating oil comprises a paraffinic base lubricating oil and 1 to 3 wt % of a surfactant of the formula:R--O(CH.sub.2 CH.sub.2 O).sub.x Hwherein: R is a normal paraffin radical of 11 to 15 carbon atoms and x ranges from 3 to 5.

Abstract: This invention is a method for making 1,2-substituted imidazoline compositions utilizing a polyamine mixture containing a high concentration of linear polyamine. The polyamine is either triethylenetetramine or tetraethylenepentamine. The polyamine mixture is reacted with a fatty acid, fatty dimer acid or the fatty esters thereof to yield the 1,2-substituted imidazoline composition. The highly linear polyamine provides higher yields of the imidazoline compound in the composition.

Abstract: Spent hydrotreating catalyst having carbonaceous and metallic deposits and of regular geometric shape after being stripped of process oil is fluidized by flowing air upwardly through the catalyst at a velocity sufficient to expand the bed thereby segregating the catalyst particles into a high activity, upper, less-contaminated fraction and a lower, more-contaminated fraction and recycling the high activity fraction to a hydrotreating process. Optionally, the high activity fraction can be regenerated with carbon burnoff or rejuvenated by acid leaching followed by regeneration with carbon burnoff to further improve catalyst activity.

Abstract: The invention is an epoxy resin composition. Diol initiators are reacted with alkylene oxide and 1 to 5 wt % epoxy resin. The epoxy resin is added internally, along the length of the diol chain to yield a modified polyol of molecular weight 2000 to 5000. The modified polyol is subjected to reductive amination to yield a polyamine. This polyamine is mixed with an epoxy base resin and cured to product epoxy resins demonstrating improved strength and adhesion.

Abstract: An improvement has been found in a process for producing Bright Stock from petroleum residuum by propane deasphalting and solvent refining. The extract of solvent refining is cooled to yield an aromatics-lean secondary raffinate which is recycled to propane deasphalting. An improved yield of Bright Stock is achieved over recycling extract to propane deasphalting.

Abstract: In a solvent refining process a lubricating oil stock is solvent extracted to yield a primary aromatics-lean raffinate and a primary aromatics-rich extract. Aromatics content of primary raffinate is controlled by manipulating extraction temperature and solvent dosage. Primary extract is separated (settled) to form a secondary raffinate and a secondary extract. The aromatics content of secondary extract is controlled by manipulating settling temperature.

Abstract: In an ebullated bed process, it has been found that in switching from one sediment yielding feedstock to a second sediment yielding feedstock that the transient sediment concentration has caused unit shutdowns with lost production. A method has been found which avoids these high transient sediment concentrations. Fresh addition is substituted for regenerated catalyst addition until the average carbon on catalyst in the bed drops to 22 wt% basis carbon free catalyst. Second feedstock is added incrementally and sediment in the product analyzed. After full second feedstock rate is achieved, first feedstock is reduced incrementally with sediment analysis. Higher unit utilization is achieved with the corresponding increased yearly production.