Abstract:
The invention is the extrusion of sulfur from thiodinitriles to obtain the corresponding dinitrile by heating the thiodinitrile at a temperature of 200* to 700*C. For example, sulfur is extruded from thiodipropionitrile to obtain adiponitrile. This extrusion reaction can be either a strictly thermal reaction employing no other reactant or a reaction conducted in the presence of other gases, liquids or solids.
Abstract:
Molybdenum containing oxidation catalysts are prepared by reducing hexavalent molybdenum to a valence state below +6 prior to or during the catalyst preparation. Reproducible catalysts with superior catalytic activity are conveniently made by this process.
Abstract:
A multiple-bed, hydrodesulfurization process whereby a plurality of fluid streams are introduced to optimally control the process temperatures thereby regulating the location and level of metallic and carbonaceous materials deposited on the catalyst.
Abstract:
Viscous polybutenes of number average molecular weight (Mn) in the range of about 300 to about 3,000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when such polybutenes contain rather small amounts, i.e., 5 to 200 ppm, of brominated dialkylhydantoin. Preference is given to such bromine containing compounds having a sufficient vapor pressure at a temperature in the range of 100* to 300*C. to be substantially completely removed at absolute pressures in the range of 5 to 760 mm Hg. Use of such polybutenes containing such brominated compounds in the addition reaction with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides and enhance yield of desired alkenyl-substituted anhydride.
Abstract:
Resin compositions comprising alpha-methylstyrene/tertiarybutylstyrene/olefin terpolymers, ethylene/vinyl acetate copolymer, and paraffin wax are useful as hot melt adhesives.
Abstract:
Protein-containing single-cell microorganisms, combined with vegetable protein, are texturized by a process in which a paste consisting of the said single-cell and vegetable protein is heated under shearing agitation, extruded, and then passed through a conditioning zone capable of inducing the formation of a textured product suitable for use as an additive to or substitute for natural foods.
Abstract:
Crude oils and residual fuel oils having improved pour point and flow properties are obtained by incorporating therein a small amount of a new terpolymer prepared from ethylene, a vinyl ester, and a dialkylvinyl carbinol. The terpolymer has a number average molecular weight of about 500-10,000 and suitably contains 45-80 wt. % ethylene, 10-25 wt. % vinyl ester of a fatty acid having up to about eight carbon atoms and 10-30 wt. % dialkylvinyl carbinol wherein the alkyl groups have up to about six carbon atoms.
Abstract:
Catalysts containing molybdenum, bismuth, iron and nickel, cobalt, magnesium, zinc, cadmium, manganese calcium or mixture thereof and an alkali metal or T1 are promoted by an element selected from antimony and tin to give highly desirable catalysts for the oxidative dehydrogenation of olefins of 4 to about 10 carbon atoms.
Abstract:
The process in this invention relates to the conversion of organic compounds selected from the group consisting of the nbutylenes, butadiene, crotonaldehyde and furan in a selective manner to maleic anhydride in the presence of a catalyst comprising the mixed oxides of antimony and molybdenum.
Abstract:
Improved sweep efficiency in oil-bearing reservoirs having high permeability streaks therein can be effected by first injecting a gel-forming solution consisting essentially of a dichromate activator in a lignosulfonate solution, modified by the presence of an alkali metal halide or an alkaline earth metal halide, such as, for example, sodium chloride or calcium chloride. This system has the advantage of high temperature tolerance and the gelforming characteristics thereof are not appreciably affected either by formation brine or CO2. Gel-forming solutions can be designed requiring from 10 to 2,000 hours to form a gel.