Abstract: The interaction of silica, previously calcined at 600.degree. C., with dibutylmagnesium (DBM), 1-butanol and titanium tetrachloride and a solution of methylalumoxane (MAO) and (BuCp).sub.2 ZrCl.sub.2 provides a catalyst that, in the absence of a trialkylaluminum (AlR.sub.3) cocatalyst, produces polyethylene with a bimodal MWD.

Abstract: A method for extruding polypropylene containing vinylidene chloride polymers (PVdC). According to the present invention, the polymers are extruded using extrusion equipment coated with a fluoropolymer. This method improves the processability, alleviates thermal degradation of the PvdC, improves the extrudate quality by reducing discoloration and voids in surfaces of the extruded product and protects the equipment by reducing the corrosive wear.

Abstract: Linear polyethylenes are added to crystal, clear transparent polystyrene to accelerate the degradation of polystyrene on exposure to ultraviolet light.

Abstract: Alkyl aromatic hydrocarbons including ethyl benzene are isomerized to xylenes utilizing a catalyst consisting essentially of ZSM-23 zeolite, platinum (or other metal such as palladium, nickel, gold, zinc, or gallium) and an alumina support.

Abstract: A process for dewaxing lube basestocks over low acidity dewaxing catalysts can be undertaken at steady state temperature. In a preferred embodiment, the feedstock is subjected to catalytic dewaxing with concommident removal of gaseous product. When high boiling feed with end points above 1000.degree. F., such as heavy neutrals and bright stocks, and waxy feeds containing more than 20 wt % wax are subject of the process, it is preferred to use continuously stirred tank reactors.

Abstract: Hydrocarbons and other compounds are halogenated to halocarbon products by contact with a halocarbon in the presence of an acidic zeolite catalyst such as ZSM-5. The process is particularly useful for the halogenation of methane to form chemicals of higher value.

Abstract: ZSM-11, ZSM-50 and zeolite beta are effective seeds for the crystallization of ZSM-5.

Abstract: A process for removing nitrogen chemically bound to a zeolite component of a catalytic composition, used in hydroprocessing feedstocks containing nitrogen precursors, including contacting the hydrogen treated used catalyst composition with polar solvents, preferably in the gaseous state, at pressures practically no greater than 100 Torr.

Abstract: The burning characteristics of a relatively hydrogen deficient fuel are improved by physically mixing with, but not dissolving in, the fuel a light hydrogen rich vapor, such as hydrogen and/or methane, ethane, etc.

Abstract: An improved hydrodewaxing process which produces a dewaxed feedstock having a pour point of at least minimum specification and also eliminates the need for conventional hydrotreating subsequent to hydrodewaxing to render the dewaxed stock stable to light and oxidation and to reduce the aging rate of the catalyst is described and includes catalytically hydrodewaxing the feedstock under conditions equivalent to a pressure of about 400 psig, a maximum temperature of about 620.degree. F. and a maximum space velocity of 1.0 LHSV, in the presence of a catalyst comprising a zeolite and a metal of Group VIII alone or admixed with an element of Group VI.

Abstract: The invention is directed to improve the profitability of existing catalytic cracking operations. Specifically, in thermofor catalytic cracking, liquified petroleum gases (LPG) are injected to the internal seal leg of the reactor for converting LPG to more valuable products and to prevent products and feed from surging out of the reaactor vessel.

Abstract: Decreasing the viscosity of and improving the atomizing and burning characteristics of a hydrogen deficient fuel by dissolving a light, hydrogen rich hydrocarbon in the fuel.

Abstract: The invention provides a process of converting shale oil fractions with the catalyst made by beginning the synthesis in the usual way and adding additional trivalent metal ion after crystallization is 20 to 90 percent complete and continuing the crystallization, whereby a zeolite having the same crystal structure throughout, but having different silica-to-alumina molar ratios in the inner core and outer shell is obtained.

Abstract: A process for increasing gasoline octane number and/or total gasoline yield in catalytic cracking units by the addition of a very small amount of finely divided shape selective additive promoter, which additive promoter is not intimately combined with a substantial amount of another solid prior to contact with the cracking catalyst. The additive promoter is a zeolite characterized by a silica to alumina mole ratio greater than about 500 and a constraint index within the approximate range of 1 to 12.

Abstract: A catalyst composition for polymerizing alpha-olefins is prepared by reacting a transition metal compound, e.g., titanium, with trimethylaluminum catalyst activator. In a preferred embodiment, the catalyst is supported on a porous refractory support and is prepared by additionally reacting a magnesium compound or an organomagnesium composition with the support.Also disclosed is a process for polymerizing alpha-olefins in the presence of the catalyst of the invention. The polymer products have higher bulk density and produce films of greater strength than polymers prepared with similar catalysts utilizing different alkyl-aluminum activators, e.g., triethylaluminum and triisobutylaluminum.