Abstract: Compounds of the formula: ##STR1## wherein R.sup.1 is lower alkyl or benzyl; R.sup.2 is lower alkoxy, benzyloxy or the group ##STR2## where R.sup.3 is lower alkoxy; Ar is phenyl or phenyl substituted with 1 to 3 substituents independently selected from halogen, trihalomethyl, nitro, phenyl, lower alkoxy and lower alkyl; and X.sup.1 and X.sup.2 are independently hydrogen, halogen, lower alkoxy, or lower alkyl, or X.sup.1 and X.sup.2 taken together form an aromatic ring fused with the phenyl ring, provided that both X.sup.1 and X.sup.2 are not hydrogen show activity as plant growth regulators.
Abstract: A process for air-blowing asphalt in the presence of hydrohalic acids, particularly hydrobromic acid, and an asphalt composition comprising a major amount of asphalt and a minor but effective amount of hydrohalic acid is disclosed.
Abstract: Disclosed is a one-step method of producing an industrial asphalt from a bituminous material which comprises mixing together without air-blowing:(a) a feed material comprising a bituminous material having a viscosity of at least 50 centistokes at 350 degrees Fahrenheit and wherein the feed petroleum residuum forms a single phase when mixed with 5 weight percent hydrobromic acid; and(b) from about 0.1 to 20.0 percent by weight hydrobromic acid, said mixing being done at a temperature in the range of 351 to 600 degrees Fahrenheit, whereby the softening point of the feed is substantially increased and the penetration is significantly decreased.
Abstract: Disclosed are polyamino alkenyl or alkyl succinimides which have been modified by treatment with a lactone to yield polyamino alkenyl or alkyl succinimides wherein one or more of the basic nitrogens of the polyamino moiety is substituted with a hydrocarbylcarbonylalkylene group. The additives so disclosed are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils.
Abstract: An apparatus and method is disclosed for separating multiphasic mixtures of such things as gas and oil, from liquids, such as petroleum production fluids. It includes a centrifugal gas/liquid separator having a generally conical inner surface, a gas/liquid inlet located on this inner surface, an area for retaining the liquid and for allowing further gravity separation of the gas/liquid phase, an enclosure for the above mentioned elements, a gas outlet, and a liquid outlet.The device functions by initially separating the gas from the oil by centrifugation in the conical separator, then by allowing the remaining liquid to further separate by gravity in the retention area.
Type:
Grant
Filed:
February 26, 1985
Date of Patent:
October 14, 1986
Assignee:
Chevron Research Company
Inventors:
Sung L. Suh, Carter B. Reeds, Peter Van Scherpe, William H. Silcox
Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are alkenyl or alkyl succinimides which have been modified by treatment with glycidol.
Abstract: Amine-containing dispersants, such as succinimides, Mannich Bases and Viscosity-index improvers are reacted with fluorophosphoric acid. The reaction of the dispersant with the fluorophosphoric acid passivates the dispersant to fluorocarbon compositions used as seals, for example in automobile engines.
Abstract: An apparatus and process of analyzing samples using reflected and/or emitted radiation is described. The apparatus includes a means for containing the sample and moving the sample and/or a reflector at a uniform rate through a fixed plane. A radiation source irradiates the core sample. The reflected or emitted radiation is directed onto a detector means capable of forming electrical signals which are digitally encoded and recorded on a digital recorder for further interactive analysis and/or processing.
Abstract: A multiple bed downflow hydrocarbon hydroprocessing reactor is modified by the addition of a phase separator above at least one of the catalyst beds. This enables the lighter fraction of the hydrocarbon, which has passed through the upper bed(s) in the vapor phase and thus not been heavily hydroprocessed, to be hydroprocessed in the absence of the liquid heavier fraction in the same reactor.
Abstract: A packed bed reactor for hydrocarbon processing and method of use is provided. The reactor comprises:(a) a first packed bed of particles in fluid communication with a feed inlet to said reactor, said first packed bed extending more than 3 to 18 inches in the direction of flow and comprising predominantly particles at least about 3/8 inch in diameter;(b) a second packed bed of particles in fluid communication with said first packed bed and downstream of said first packed bed, said second packed bed extending at least 12 to 48 inches in the direction of flow and comprising predominantly particles having diameters within the range of 3/16 to 5/16 inch and smaller than the average diameter of particles in said first bed; and(c) a third packed bed of particles in fluid communication with said second packed bed and downstream of said second packed bed, said third packed bed comprising predominantly particles having diameters below 1/8 inch.
Abstract: Compounds of the formula: ##STR1## wherein R is aryl or aryl substituted with 1 to 3 substituents independently selected from halogen, lower alkyl of 1 to 4 carbon atoms, lower alkoxy of 1 to 4 carbon atoms, lower alkylthio of 1 to 4 carbon atoms, nitro, cyano, --S(O).sub.n R.sup.2 wherein n is 1 or 2 and R.sup.2 is lower alkyl of 1 to 4 carbon atoms; or alkyl, cycloalkyl, lower alkenyl or lower alkynyl, all optionally substituted with 1 to 3 halogen atoms; and R.sup.1 is lower alkyl, trialkylsilylmethylene, aryldialkylsilylmethylene, aryl; aralkyl, or substituted aryl or aralkyl are fungicidal.
Abstract: A hydrocarbon feed is contacted with a reforming catalyst in a reaction vessel to produce a reformate, hydrogen, methane, and ethane are stripped from the reformate in a first separator, C.sub.3 -C.sub.5 hydrocarbons are stripped from the stripped reformate in a second separator, and then a portion of the hydrogen, methane, and ethane; and substantially all of the C.sub.3 -C.sub.5 hydrocarbons are recycled to the reaction vessel as heat carrier.
Abstract: Disclosed herein are additives which are useful as dispersants and detergents in lubricating oils. In particular, this invention is directed toward polyamino alkenyl or alkyl succinimides which have been modified by treatment with a compound of the formula: ##STR1## wherein W is oxygen or sulfur; X is oxygen, sulfur or R.sub.5 N< wherein R.sub.5 is hydrogen, and alkyl of from 1 to 20 carbon atoms; and R.sub.4 is an alkylene group of from 2 to 5 carbon atoms or an alkylene group of from 2 to 5 carbon atoms substituted with from 1 to 3 alkyl groups of from 1 to 2 carbon atoms each with the proviso that both W and X are not both oxygen. The modified polyamino alkenyl or alkyl succinimides of this invention have been found to possess dispersancy and detergency in lubricating oils. These modified succinimides are also useful as dispersants and detergents in fuels.
Abstract: The present invention is a pressure sensing and measurement device that eliminates errors due to compliance and lack of sensitivity. The cell uses a pressure receiving means (such as a flexible diaphragm) to detect an impinging object, a means to counteract the pressure caused by the impinging object (such as internal hydraulic pressure), and a detector to measure the amount of internal pressure used to counteract the impinging force. Since the cell is internally pressurized to a point equal to a value equal to the external pressure, the diaphragm is undeflected and may avoid the problems inherent in simple diaphragm systems (such as bridging and insensitivity).
Abstract: An electrochromic device which incorporates a reversibly color-changing organic polymer film as the display electrode. The display polymer film is capable of undergoing reversible oxidation and/or reduction to a charged, colored, conductive state. Upon reversing the charge, the polymer returns to its virgin color. The display films are comprised of linear fused heterocyclic ring systems, optionally with connecting units, or linear monocyclic ring systems and connecting units. The device requires low currents to operate and switch from the virgin state to the colored state. It also can optionally be operated to exhibit several colors.
Abstract: Disclosed are additives which are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils. In particular, disclosed are polyamino alkenyl or alkyl succinimides which contain carbamate functionalities.
Type:
Grant
Filed:
April 12, 1985
Date of Patent:
September 16, 1986
Assignee:
Chevron Research Company
Inventors:
Robert H. Wollenberg, Frank Plavac, Timothy R. Erdman
Abstract: The present invention is a method and an apparatus for reducing marine growth on an offshore oil platform member. The device uses a buoyant member coupled with a sleeve to scrape the exterior surface of the platform members. The buoyant component floats on the surface of the water and takes advantage of the ocean energy (i.e., the variation of the water's surface height due to the tidal and surge responses) to move the device up and down on the member. The liner and the buoyant member are adjusted for size and buoyancy to ensure that scraping occurs in the areas of the members that are most vulnerable to attachment of marine organisms.