Abstract: A method and apparatus for discharging heavy oil-treated particulate coal and controlling emissions from a heavy oil spray contacting vessel.
Abstract: Water-insoluble, water swellable polymer compositions are disclosed. In one embodiment, the polymer composition comprises a copolymer of styrene and maleic anhydride and a multi arm block copolymer of styrene and ethylene oxide. In a preferred embodiment, the maleic anhydride groups of the anhydride-containing copolymer are treated with a strong base to further enhance absorption capacity.
Abstract: Moldable polyester-sulfone thermoplastic resins are prepared by coreacting a dihydric phenol and a bis(.alpha.,.alpha.-disubstituted acetic acid) sulfone or its reactive derivative. In one embodiment the polyester-sulfone resin can be molded to form articles. In another embodiment, the polyester-sulfone resin is blended with an impact-modified styrenic copolymer, polyethylene terephthalate, or polybutylene-terephthalate and the resulting blend is molded to form an article.
Abstract: A thermoplastic molding composition which comprises a blend of:(A) a copolymer having recurring units of a monoalkenyl aromatic monomer and recurring units of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic anhydride N-substituted imide, and(B) a hydrogenated elastomeric block copolymer having at least one substantially completely hydrogenated diene polymer mid block and at least two monoalkenyl arene polymer end blocks in which at least a portion of the arene groups contained in the end blocks are substituted with at least one substituent selected from the group consisting of nitrol, cyano and trifluromethanesulfonyl.
Abstract: [2,5,8,11]-tetraalkyl-[2,5,8,11]-tetracyano-cis-6a' carboxy, 12a' oxoacide-3,4:9,10 bisdiazobicyclooctane compounds are disclosed. In one embodiment, the compounds are capable of initiating free radical polymerization and are well suited for the preparation of polymers having block type structures.
Abstract: An improved method for converting methane to higher hydrocarbon products by contacting at a selected temperature at least one reducible oxide of at least one metal, associated with a hydroxylated magnesia support (that is, magnesia derived from magnesium hydroxide or a magnesium-containing component contacted with hydroxyl-containing material).
Abstract: Electrical current is caused to flow between an electrode well located in an aquafer above viscous hydrocarbon-bearing formation and an electrode well located in an aquafer below the hydrocarbon-bearing formation. The electrical current thereby tends to spread out in a broad plate-like configuration from each electrode well. This increases the area of the hydrocarbon-bearing formation through which current is flowed, thereby extending the region which is heated by electrical dissapation. The nature of the aquafers and their location eases and resolves much of the adverse vaporization and pressure buildup that occurs in other systems. This also allows water to be readily injected to into or produced from the electrode wells to further control vaporization and pressure buildup without adversely affecting gravity drainage, other drive mechanisms or injection programs operating within the hydrocarbon-bearing formation. In addition, this enables the electrode wells to be used in a more continuous manner.
Abstract: A thin film photovoltaic device comprising a first layer of copper indium diselenide p-type semiconductor and a second layer of n-type zinc oxide semiconductor. In a preferred form, the first portion of the zinc oxide film at the junction with the CIS is undoped to have relatively high resistivity, while the remaining portion thereof is doped to achieve low resistivity. The zinc oxide is preferably deposited by a low temperature chemical vapor deposition process.
Abstract: A novel method for producing branched carboxylic acids or esters from alpha-unsaturated olefins is disclosed. Such olefins are reacted with a novel, sterically hindered, ortho substituted phenylphosphine palladium halide catalysts in the presence of water or primary or secondary alcohols to produce high branched end product yields. Such catalysts have phosphine ligand cone angles of between about 170.degree. and 180.degree.. Tris(o-methoxyphenyl)phosphine palladium halide and o-trifluoromethylphenyldiphenylphosphine palladium halide catalysts are preferred.
Abstract: A thin film photovoltaic device having first layer of copper indium selenide, a second layer of cadmium sulfide having a thickness less than 2500 angstroms, and a third layer of conducting wide bandgap semiconductor such as zinc oxide. The transparent third layer allows good transmission of blue light to the junction region while fully depleting the junction area to improve device voltage.
Type:
Grant
Filed:
December 6, 1984
Date of Patent:
September 9, 1986
Assignee:
Atlantic Richfield Company
Inventors:
Uppala V. Choudary, Yuh-Han Shing, Richard R. Potter, James H. Ermer, Vijay K. Kapur
Abstract: A process is disclosed for removing sulfur-containing impurities from a liquid hydrocarbon stream wherein the optimum performance of a sulfur-removing material is achieved by selecting a material having a porosity which varies with the following formula:(0.23.+-.K)(LHSV).sup.1.7 RF.sup.2whereinK=0.12-1.55R;(LHSV) is liquid hourly space velocity;R is the ratio of volume-to-surface area of the sulfur-removing material; andF is a fraction of impurities removed divided by the total impurities of the inlet stream.
Abstract: Silicon tetracarboxylates of higher acids are prepared by contacting silicon tetracarboxylates of lower fatty acids with higher fatty acids at a temperature sufficiently high to vaporize the lower fatty acid by-product. The reaction may be carried out in the presence of an inert gas, if desired.
Abstract: An apparatus for intimately contacting particulate solids with a heavy liquid, said apparatus comprising:(a) a contacting vessel;(b) a particulate solids inlet in communication with an upper end of the contacting vessel;(c) a generally conical deflector positioned in the contacting vessel beneath the particulate solids inlet;(d) an inlet control to control the flow of the particulate solids into the contacting vessel and prevent the discharge of gaseous materials from the contacting vessel;(e) a particulate solids outlet in communication with a lower end of the contacting vessel;(f) an outlet control to control the flow of particulate solids from the contacting vessel so that a bed of particulate solids is maintained in a lower portion of the contacting vessel; and,(g) spray nozzles positioned in the contacting vessel to spray heavy liquid onto the particulate solids as they fall downwardly to the bed of particulate solids.
Abstract: A moldable composition which comprises a novel random N-(halogenated phenyl)maleimide-containing copolymer and a flame-retardant synergist is disclosed. The molded composition exhibits at least a 94V-1 classification when tested in accordance with Underwriter's Laboratories Inc. Test Method UL94.
Abstract: Expandable styrene polymer particles which have anti-stratification and anti-lumping properties during expansion are produced by dry blending styrene polymer particles in the presence of 0.01-0.04 parts of alkyl and alkylaryl ethers of polyethoxyethanol mono- and diesters of phosphoric acid per 100 parts of polymer particles. The esters may be added as sole anti-stratification or anti-lumping agent or in addition to known anti-lumping agents.
Abstract: Novel organic water-soluble antimony compounds are prepared by reacting an alkoxyalkylamine with a hydroxycarboxylic acid to form an intermediate product and then reacting the intermediate product with an antimony oxide. These compounds are useful for use as catalyst metal poison passivators.
Type:
Grant
Filed:
November 19, 1984
Date of Patent:
September 2, 1986
Assignee:
Atlantic Richfield
Inventors:
Marilyn W. Blaschke, Richard F. Miller, John Link
Abstract: Expandable styrene polymer particles which have anti-static and anti-lumping properties during expansion are produced by adding 0.1 to 0.4 parts of alkyl and alkylaryl ethers of polyethoxyethanol mono- and diesters of phosphoric acid per 100 parts of polymer particles during impregnation of the polymer particles with blowing agents. The esters may be added as sole antistatic agent or in addition to the known internal additives which impart fast-cool and anti-lump properties.
Abstract: Alkoxylated ether sulfate anionic surfactants of this invention are prepared by conventional procedures, e.g., oxyalkylation with propylene oxide or 1,2-butylene oxide of a branched chain alcohol; optionally followed by oxyalkylation with ethylene oxide or with a mixture of ethylene oxide and higher alkylene oxide; sulfation of the alkoxylated product; and neutralization of the sulfated derivative. The alkoxylated ether sulfate anionic surfactants of the present invention are liquids which exhibit superior detergency to polyester fabrics, excellent hard water stability, low foaming, low odor, and exhibit excellent compatibility with non-ionic and other surfactants in detergent formulations.
Type:
Grant
Filed:
June 25, 1984
Date of Patent:
August 26, 1986
Assignee:
Atlantic Richfield Company
Inventors:
Haven S. Kesling, Jr., Hyman D. Gillman
Abstract: A glass composition is disclosed which is formed from a mixture comprising one or a plurality of natural mineral zeolites and having a melting point in the range of from about 1000.degree. to about 1500.degree. C. The glass compositions of this invention can be formed into various glass articles, including flat glass, glass containers, glass fiber and glass foam.
Abstract: A flame retarding additive comprising an alternating copolymer of a brominated styrene and N-brominated phenylmaleimide, is blended with a matrix resin to produce molding compositions which when molded exhibit improved flame retarding characteristics. The flame retarding additives of this invention also exhibit non-blooming characteristics.