Abstract: A process for cracking high metals content feedstocks which comprises contacting said feedstocks under catalytic cracking conditions with a novel catalytic cracking composition comprising a solid cracking catalyst and an alumina diluent.
Abstract: Disclosed herein are additives which are useful as dispersants and detergents in lubricating oils and fuels. In particular, this invention is directed toward polyamino alkenyl or alkyl succinimides wherein one or more of the amino nitrogens of the succinimide is substituted with ##STR1## wherein R.sub.4 is hydrocarbyl of from 1 to 30 carbon atoms; R.sub.5 is hydrocarbyl of from 2 to 30 carbon atoms or 13 R.sub.6 --(OR.sub.6).sub.p -- wherein R.sub.6 is alkylene of 2 to 5 carbon atoms and p is an integer from 1 to 100; and m is an integer of from 0 to 1.
Type:
Grant
Filed:
January 16, 1986
Date of Patent:
March 10, 1987
Assignee:
Chevron Research Company
Inventors:
Thomas F. Buckley, III, Robert H. Wollenberg
Abstract: Compounds of the formula ##STR1## wherein Ar is aryl, R.sup.1 is halomethyl, R.sup.2 is hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, haloalkyl, alkylthio, alkenylthio, alkynylthio, aryl or NR.sup.5 R.sup.6 wherein R.sup.5 and R.sup.6 individually are hydrogen, alkyl, alkenyl or alkynyl, R.sup.3 is hydrogen or alkyl, n is 1 or 2, Y is O, S or NR wherein R is hydrogen, alkyl, alkenyl or alkynyl, have been found to be useful herbicides. The compounds are prepared by acylation of the corresponding N-heterocyclealkylene-N-arylamine.
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: Disclosed herein are additives which are useful as dispersants and detergents in lubricating oils and fuels. In particular, this invention is directed toward polyamino alkenyl or alkyl succinimides wherein one or more of the amino nitrogens of the succinimide is substituted with ##STR1## wherein R.sub.4 is hydrocarbyl of from 1 to 30 carbon atoms; R.sub.5 is hydrocarbyl of from 2 to 30 carbon atoms or --R.sub.6 --(OR.sub.6).sub.p -- wherein R.sub.6 is alkylene of 2 to 5 carbon atoms and p is an integer from 1 to 100; and m is an integer of from 0 to 1.
Type:
Grant
Filed:
January 16, 1986
Date of Patent:
March 3, 1987
Assignee:
Chevron Research Company
Inventors:
Thomas F. Buckley, III, Robert H. Wollenberg
Abstract: Process and composition for removing H.sub.2 S and like sulfides from gas streams by contact with a substituted aromatic nitrile having an electron-attracting substituent on the aromatic ring at least as strong as halogen (e.g., isophthalonitrile) and an organic tertiary amine in an inert organic solvent such as N-methyl-2-pyrrolidone.
Type:
Grant
Filed:
April 29, 1985
Date of Patent:
March 3, 1987
Assignee:
Chevron Research Company
Inventors:
Robert Starkston, Mark C. Luce, Robert V. Homsy
Abstract: The thermal neutron absorption cross-section of a sample is measured by placing the sample in a sample container which surrounds a cavity within which a neutron source is positioned. A detector is positioned along a line parallel to an axis passing through the cavity. The source and detector are immersed in a moderator within a tank.
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 hydroxyalkylene carbonyl group. The additives so disclosed are useful as dispersants in lubricating oils, gasolines, marine crankcase oils and hydraulic oils.
Abstract: The present invention decreases the time needed between collection cycles of a NML tool located in a wellbore penetrating an earth formation by zeroing the effect of prior-in-time residual polarization via a surprising change in the operating parameters of the polarizing coil, viz., using a higher Q value than normal or its equivalent for the polarizing coil circuit during cutoff of the polarizing field and ringing of the coil at the proton precession frequency. Result: cyclic NML logging speed can be greatly improved.
Abstract: The present invention decreases the time needed between collection cycles of a NML tool located in a wellbore penetrating an earth formation by zeroing the effect of prior-in-time residual polarization via a surprising change in the operations, viz., using a sham polarizing cycle wherein the coil circuits permitted to ring at a Q' value higher than normal. Result: previously non-precessing components of the residual polarization undergo precession and can be subsequently scattered by the next-in-time field. Since the sham field as well as the next-in-time polarizing field are both provided with slow-rising amplitude vs. time turn-on segments, the resulting polarization existing at the start of the buildup of the fields can be easily scattered. Ultimately, all aspects of the residual polarization are destroyed whereby cyclic NML logging speed can be greatly improved.
Abstract: The present invention decreases the time needed between collection cycles of a NML tool located in a wellbore penetrating an earth formation by zeroing the effect of prior-in-time residual polarization via a surprising change in the operating parameters, viz., generating the next-in-time polarizing field with a slow-rising turn-on segment for scattering precessing components of residual polarization thereabout. Result: cyclic NML logging speed can be greatly improved.
Abstract: A new catalyst is disclosed which is useful for dehydrocyclizing alkanes. This catalyst contains a zeolite of the L family, a Group VIII metal, and an alkaline earth metal.
Abstract: The present invention decreases the time needed between collection cycles of an NML tool located in a wellbore penetrating an earth formation by zeroing the effect of prior-in-time residual polarization via a surprising change in the operations, viz., using a series of sham polarizing cycles wherein the coil circuit is permitted to ring at the series Q' values higher than the normal Q value. Result: previously non-precessing components of the residual polarization undergo precession and can be subsequently scattered by the next-in-time field. Since all of the sham fields as well as the next-in-time polarizing field are provided with slow-rising amplitude v. time turn-on segments, the precessing components of the polarization existing at the start of the build-up of the fields are easily scattered. Ultimately, all aspects of the residual polarization is destroyed whereby cyclic NML logging speed can be greatly improved.
Abstract: A reforming process is disclosed wherein a hydrocarbon feed is contacted with two reforming catalysts at conditions which favor reforming. The first reforming catalyst comprises a metallic oxide support having disposed therein a Group VIII metal. This first reforming catalyst may contain Group VIII metal promoters, such as rhenium, tin, germanium, cobalt, nickel, iridium, rhodium, ruthenium and combinations thereof. The second reforming catalyst is a non-acidic catalyst comprising a large-pore zeolite containing at least one Group VIII metal. A preferred first reforming catalyst comprises alumina having disposed therein in intimate admixture platinum and rhenium. A preferred second reforming catalyst is a non-acidic catalyst comprising a type L zeolite containing platinum.
Abstract: The present invention decreases the time needed between collection cycles of a NML tool located in a wellbore penetrating an earth formation by zeroing the effect of prior-in-time residual polarization via a surprising change in the operations while guarding against the effects of tuning errors, viz., using a sham polarizing cycle wherein the coil circuit is permitted to ring at a Q' value higher than normal during the initial stages of the sham cycle followed by the establishment of a low Q thereafter. Result: the effect is as if sham ringing is at the higher Q' value, but without the consequences of slow cutoff of the decaying magnetic field introduced during ringing. Hence, the effects of error fields are minimized and previously non-precessing components of the residual polarization undergo precession and can be subsequently scattered by the next-in-time polarizing field. Since the sham field as well as the next-in-time polarizing field are both provided with slow-rising amplitude vs.
Abstract: The present invention decreases the time needed between collection cycles of an NML tool located in a wellbore penetrating an earth formation by zeroing the effect of prior-in-time residual polarization via a surprising change in the operations, while guarding against the effects of tuning errors, viz., using a series of sham polarizing cycles wherein the coil circuit is permitted to ring at a Q' value higher than normal during the initial stages of each sham cycle followed by the establishment of a low Q thereafter. Result: the effect is as if sham ringing is at the higher Q' value, but without the consequences of slow cutoff of the decaying magnetic field introduced during ringing. Hence, the effects of error fields are minimized and previously non-precessing components of the residual polarization undergo precession and can be subsequently scattered by the next-in-time field. Since the sham fields as well as the next-in-time polarizing field are all provided with slow-rising amplitude v.
Abstract: The present invention decreases the time needed between collection cycles of a NML tool located in a wellbore penetrating an earth formation by zeroing the effect of prior-in-time residual polarization via a surprising change in the operating parameters of the coil circuit while guarding against the effects of tuning errors in the latter, viz., using a higher Q value than normal or its equivalent for the coil circuit during the initial stages of ringing of the coil at the proton precession frequency followed by establishing a lower Q value for the latter stages. Result: the effect is as if ringing is at the higher Q' value with attendent zeroing of the residual polarization, but without the consequences of slow cutoff of the decaying magnetic field introduced during ringing. Hence, the effect of error fields associated with the latter is minimized.
Abstract: 5-Amino-3-oxo-4-(substituted-phenyl)-4-pyrroline and derivatives thereof. The compounds generally exhibit both pre-emergence and post-emergence phytotoxicity and are useful as herbicides and also plant growth regulating agents at low dosages.
Abstract: This invention relates to normally liquid lubricating oil additives which provide both antioxidant and friction-modifying properties when added to lubricating oil. In particular, this invention relates to C.sub.18 to C.sub.24 alkyl catechol lubricating oil additives which are normally liquid at typical storage temperatures.
Type:
Grant
Filed:
September 18, 1985
Date of Patent:
February 17, 1987
Assignee:
Chevron Research Company
Inventors:
Thomas V. Liston, Warren Lowe, Vernon R. Small
Abstract: Disclosed is the compound trihydrated potassium triborate having the following chemical formula: KB.sub.3 O.sub.5.3H.sub.2 O. Also disclosed is a process for the production of trihydrated potassium triborate by reacting potassium pentaborate tetrahydrate with either dipotassium tetraborate tetrahydrate or with dipotassium pentaborate pentahydrate by contacting the two solid reactants under reaction conditions including an amount of water sufficient to cause reaction and insufficient to dissolve the two reactant solids. The new trihydrated potassium triborate may also be prepared by treating dipotassium pentaborate pentahydrate with water under the same reaction conditions.