Abstract: An improved vapor receiving system for a gasoline dispensing nozzle having a stronger magnetic sealing section and a more flexible and durable bellows construction. The magnetic sealing section has a magnetic ring backed by a second ring attracted to the magnet which acts as a pole piece to increase the magnetic attractions toward the fillpipe during the filling and vapor receiving process. The magnetic sealing section cover and bellows section are made from a thin, flexible reinforcement mesh impregnated with natural or synthetic elastomer such as vinyl.

Abstract: Endo-tetrahydroalkyldicyclopentadienes are mildly isomerized with AlCl.sub.3 whereby the changes in pour point and viscosities are such that the resulting isomeric mixture can be used as a diluent for a higher viscosity hydrocarbon missile fuel. The isomerication is such that essentially no alkyl-adamantanes are formed. The mole ratio of AlCl.sub.3 to the tetrahydrodienes is in the range from between about 0.001 to about 0.5. The temperature is in the range between from about 0.degree. C to about 100.degree. C.

Abstract: Process is disclosed for preparing solid thermoplastic polymer fibrilla or fibril having a length which makes either useful for mixing with cellulosic pulp. Process involves forming a two phase mixture of polymer and solvent wherein one phase is a polymer-rich phase and the other is a solvent-rich phase. Said mixture is discharged through a suitable nozzle in laminar flow.

Abstract: An electronic micrometer having an encoding system located inside the micrometer housing for electronically determining and indicating the measurement made by the micrometer. The encoding system produces pulses in response to rotation of the micrometer thimble by having alternating reflecting and nonreflecting surfaces on the inside of the thimble which reflect pulses of light from a light source to a light sensitive cell. A digital counting circuit is provided for counting the pulses produced by the light sensitive cell and a digital readout for displaying the sum result. A system for sensing the direction of thimble rotation, and conditioning the digital counter to add or subtract pulses, has a light source and light sensitive cell opposite a reflecting surface which is either covered by a nonreflecting surface or uncovered depending upon the direction of rotation of the thimble.

Abstract: A process for making an N-aroyl derivative of an aromatic imide which comprises reacting an aromatic o-dicarboxylic acid anhydride with a nitrile at a temperature of at least about 250.degree. C and in the presence of a labile proton source.

Abstract: Process involves the continuous production of exo-exo stereoisomer of the hexacyclic dimer of norbornadiene using a three component catalytic system of diethylaluminum chloride, ferric acetylacetonate, and bis(1,2-diphenylphosphino)ethane. Temperature range of reaction is about 100-220.degree. F, and residence time is about 1-10 hours. Process further involves taking a product stream, along with any catalyst and other materials and treating it to deactivate the catalyst; then separating the desired exo-exo dimer by various means at a temperature below about 500.degree. F to avoid decomposition of iron salts. Unreacted norbornadiene in the process is recycled.

Abstract: Process involves the continuous production of endo-endo stereoisomer of the hexacyclic dimer of norbornadiene using a three component catalystic system of diethylaluminum chloride, ferric acetylacetonate and triphenylphosphino. Temperature range of reaction is about 100.degree.-200.degree. F and residence time is about 1-10 hours. Process further involves taking a product stream, along with any catalyst and other materials, and treating it to deactivate the catalyst; then separating the desired endo-endo dimer by various means at a temperature below about 500.degree. F to avoid decomposition of iron salts. Unreacted norbornadiene is recycled.

Abstract: A process for making aromatic carboxylic acids by reacting carbon monoxide with an aromatic compound in the presence of a mixture of a thallium salt and a palladium salt whereby highly efficient use of the available oxidant is achieved.

Abstract: A process for the preparation of terephthalic acid which comprises electrolyzing disodium terephthalate in the anode compartment of an electrolytic cell whereby terephthalic acid product is precipitated and subsequently separated. In a preferred embodiment the disodium terephthalate is obtained by the aqueous hydrolysis of terephthalonitrile in the presence of a stoichiometric excess of sodium hydroxide.

Abstract: A process for making terephthalic acid which comprises electrolyzing an aqueous solution of potassium acid terephthalate, preferably in the presence of a potassium salt of an acid stronger than terephthalic acid. In another embodiment of the invention terephthalonitrile is converted to terephthalic acid by hydrolyzing terephthalonitrile in an aqueous medium containing dipotassium terephthalate, potassium bicarbonate, and potassium hydroxide, stripping ammonia and carbon dioxide from the hydrolyzed product, adding carbon dioxide to the stripped hydrolysis product to precipitate monopotassium terephthalate, and electrolyzing said monopotassium terephthalate in the presence of an acid stronger than terephthalic acid to precipitate terephthalic acid and separating said terephthalic acid product.

Abstract: The compound methyl 1,1,3,3-tetramethylbutyl ether having the formula ##STR1##

Abstract: In the liquid phase catalytic oxidation of alkylsubstituted aromatic compounds to the corresponding aldehyde and alcohols the improvement of modifying the reaction to yield the corresponding cyanohydrin ester, which comprises carrying out said oxidation in the presence of HCN or an alkali metal cyanide and an anhydride of the ester moiety.

Abstract: In the preparation of an alkylene glycol such as ethylene glycol by hydrolysis of the corresponding aliphatic acid ester, the improvement which comprises hydrolyzing the ester in a distillation column, taking to a condenser as overhead a vaporous mixture of water and aliphatic acid from the hydrolysis column, which immiscible stream is mixed with vapors of a water immiscible aliphatic ketone in the condenser, condensing the mixture and conducting the condensate to a settling tank where an upper ketone phase containing extracted aliphatic acid and a lower aqueous phase is formed, recycling the aqueous phase to the hydrolysis column, feeding the ketone phase to a distillation column where the ketone is distilled off and returned to the condenser, and separating essentially anhydrous aliphatic acid from the bottom of the distillation column.

Abstract: Method is disclosed for preparing a honeycomb insulation structure having its cells partially filled with a low density foam and a high density integral skin completely covering one edge of the honeycomb. Method comprises placing one edge of a honeycomb in an inert material; introducing a foamable or foaming substance into the cells and allowing it to rise from the surface of the inert material until it overflows slightly. The overflowing foam comes into contact with a pressure platen just above the honeycomb thereby forming the high density integral skin. The level of the material in the cell determines the thickness of the void on one edge. Structure has utility in cryogenic storage.

Abstract: A control system for automatically controlling the operation of a plurality of fans for a cooling tower so that the minimum number of fans and the lowest speeds are used to provide the required cooling necessary at any one time. The fans are individually controlled in response to the temperature of the working fluid, to be either off or operated at a low or high speed so that as the temperature of the working fluid increases, more fans are turned on first to their low speed and then to their high speed. Safety features are provided for starting the system and for changing the speeds of the fans to prevent damage to the control system and unnecessary wear on the fan motors.

Abstract: Endo-tetrahydrodicyclopentadiene is isomerized to its exo-isomer in the presence of aluminum trichloride at a temperature in the range between from about -.degree. C to about 90.degree. C. The mole ratio of AlCl.sub.3 to the tetrahydrodiene is in the range between from about 0.001 to about 0.75. An inert solvent may also be used. The very facile isomerization is essentially quantitative. The exoisomer has utility as a relatively high BTU/gallon, viscosity-lowering difluent for a missile fuel.

Abstract: A process for isomerizing cyclohexanebis(methylamine) by contacting it with an organometallic compound at a temperature of from about 100.degree. to about 200.degree. C.

Abstract: Mixed tetrahydropolycyclopentadienes are isomerized in the presence of anhydrous aluminum trichloride to form an additive suitable for use with a high energy missile fuel. The amount of aluminum trichloride present is such that the weight ratio of trichloride to the tetrahydropolydiene is in the range between from about 0.005 to about 0.75. Also the isomerization involves an inert solvent and is at a temperature between from about -20.degree. C to about 25.degree. C. Also anhydrous hydrogen chloride is present to facilitate the isomerization.

Abstract: A process for making terephthalic acid of high purity by feeding an aqueous equilibrium hydrolysis solution of terephthalonitrile to a reactive distillation column operated at a temperature of from about 200.degree. C to about 260.degree. C at autogenous pressure where the equilibrium solution is subjected simultaneously to further hydrolysis and distillation of ammonia while maintaining the concentration of aromatic materials in the aqueous liquid in said column sufficiently high to effect precipitation of dissolved terephthalic acid, removing the water vapor and ammonia from the top of the column, subjecting bottoms product in said column to further hydrolysis and distillation in a reboiler, returning vapor from the reboiler to the distillation column, removing an aqueous slurry of terephthalic acid from the reboiler and separating terephthalic acid product.

Abstract: The compound methyl 1,1,3,3-tetramethylbutyl ether having the formula ##STR1##