Abstract:
A quick action firing assembly for charging and sudden release of gas under pressure in a seismic energy generator for offshore subsurface exploration, for example, comprising a hollow, elongated valve having equal and opposite surfaces and means for charging the generator through the valve with high pressure gas and simultaneously applying equal forces in opposite directions to the valve whereby a minimum of force is required to open the valve.
Abstract:
The invention concerns the use of solubilized ruthenium complexes as homogeneous hydrogenation catalysts for the selective and sequential reduction of dinitroaromatic and mononitroaromatic mixtures to the corresponding amines. A typical embodiment is the reduction of one of the two nitro groups in dinitrobenzene contained in the mixture of dinitrobenzene and nitrobenzene.
Abstract:
Synthetic lubricating oil composition comprising a major portion of an aliphatic ester base oil having lubricating properties formed from the reaction of a pentaerythritol or trimethylolpropane and an organic monocarboxylic acid containing (a) from about 0.005 to 0.5 percent of a thiouracil compound, (b) from about 0.3 to 5 percent of an alkyl or alkaryl phenylnaphthylamine; (c) from about 0.3 to 5 percent of a dialkyldiphenylamine; and (d) from about 0.25 to 10 percent of a hydrocarbyl phosphate ester.
Abstract:
Seismic surveying of the reflection type, employing mechanical vibrators to generate a seismic signal. Performance of the vibrators needs to be monitored frequently, and by sending a coded control signal when a given vibrator sweep is instigated, a predetermined parameter of a given vibrator is monitored and recorded with the received seismic sweep signals.
Abstract:
Citrus fruit peels and pulp are treated by coking in the aqueous phase in the absence of air or oxygen followed by heating of the resulting coke to give water insoluble essential oils such as orange oils. A carrier gas such as nitrogen preferably is used to entrain the hydrocarbons evolved by heating the coke.
Abstract:
A hydrogenation reactor comprises an elongated vertical container with a height greater than twice the width and divided into a plurality of tall slender chambers, either as a new reactor or as a modified existing reactor, having greatly increased distribution of a fluid reactant mixture flowing through a solid catalyst. Vertical baffles divide the container into various novel configurations having an increased height-towidth ratio giving increased linear velocity of the flowing reactants to several times that of the single pass reactor while maintaining the space velocity constant, the baffles further providing high strength-to-weight ratio and greater distribution while still permitting easy loading, regeneration, and dumping of the catalyst. With the last chamber being a downflow chamber in all modifications, catalyst ''''carry over'''' is minimized. Most of the modifications have an even number of chambers with inlet and exit nozzles at the bottoms of both the first chamber and last chamber insuring more efficient reverse flow at any time.
Abstract:
A multipurpose additive for lubricating oils of antioxidant, antithickening, anticorrosion and detergent properties comprising a sulfurized Group II metal nitrated alkylphenolate prepared by (1) contacting an alkylphenol with a nitrating agent to form nitrated alkylphenol, (2) treating the nitrated alkylphenol with a Group II metal oxide, hydroxide or alkoxyalkoxide to form the Group II metal salt of nitrated alkylphenol, (3) treating the Group II metal salt with sulfur to form the sulfurized reaction product of the Group II metal salt of a nitrated alkylphenol.
Abstract:
Lubricating oils of superior copper corrosion inhibiting properties may be made using an additive of 3,5-bis(alkyldithio)4-substituted isothiazoles as additives.
Abstract:
A method of preparing nitrocycloalkanones by simultaneously contacting a solution containing a cycloalkene, a denitrating agent and an organic solvent with a mixture of dinitrogen tetroxide and oxygen, the mole ratio of denitrating agent to cycloalkene being above 0.1:1 and up to about 2:1, preferably about 0.5:1 to 1:1, as a one step nitrooxidation reaction. The nitrocycloalkanones so formed are useful as fuel and lubricant additives as well as intermediates in the preparation of cyclic lactams such as caprolactam.
Abstract:
A method of preparing nitrocycloalkanones by simultaneously contacting a solution containing a cycloalkene, a 2-pyrrolidinone denitrating agent and an organic solvent with a mixture of dinitrogen tetroxide and oxygen, the mole ratio of denitrating agent to cycloalkene being above 0.1:1 and up to about 2:1, preferably about 0.5:1 to 1:1, as a one step nitrooxidation reaction. The nitrocycloalkanones so formed are useful as fuel and lubricant additives as well as intermediates in the preparation of cyclic lactams such as caprolactam.