Patents Represented by Attorney R. J. Cier
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Patent number: 4394300Abstract: A modified zeolite composition useful for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified prior to use by treatment with compounds of germanium, tin and/or lead, and optionally phosphorus, the deposit a minor proportion of such elements on the zeolite.Type: GrantFiled: November 14, 1980Date of Patent: July 19, 1983Assignee: Mobil Oil CorporationInventors: Chin C. Chu, Warren W. Kaeding
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Patent number: 4357264Abstract: A zeolite catalyst composition suitable for para-selective conversion of substituted aromatic compounds, e.g., to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. Such a composition comprises a zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, and a minor amount, e.g., at least 0.25 weight percent of one or more of the alkaline-earth metals (Ca, Sr, Ba), and optionally phosphorus.Type: GrantFiled: April 24, 1981Date of Patent: November 2, 1982Assignee: Mobil Oil CorporationInventor: Chin-Chiun Chu
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Patent number: 4356338Abstract: There is disclosed a method for decreasing catalyst coking and extending the usable catalyst life by pre-treatment of the catalyst with steam and/or a phosphorus-containing compound. Catalysts benefiting from such pre-treatment comprise crystalline zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index, as herein defined, within the approximate range of 1 to 12.Type: GrantFiled: October 8, 1980Date of Patent: October 26, 1982Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4349461Abstract: A modified zeolite catalyst useful for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with compounds of manganese and/or rhenium, and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.Type: GrantFiled: November 14, 1980Date of Patent: September 14, 1982Assignee: Mobil Oil CorporationInventors: Chin-Chiun Chu, Warren W. Kaeding
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Patent number: 4338475Abstract: Apparatus and method of utilization for controlling exothermic reactions such as the conversion of methanol to hydrocarbons are discussed. More particularly, the arrangement of apparatus comprising heat exchange tubes and open end baffle tubes for maintaining the hydraulic diameter within restricted limits during contact between vaporous reactant and a fluid bed of catalyst is discussed.Type: GrantFiled: October 3, 1980Date of Patent: July 6, 1982Assignee: Mobil Oil CorporationInventors: Nicholas D. Pennington, James H. Haddad
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Patent number: 4298547Abstract: An improved process for production of phenylalkylsulfonate compounds whereby the proportion of the 2-alkylphenylsulfonate isomer is reduced relative to the higher numbered isomers thereof (3-alkyl; 4-alkyl; etc.). After alkylation of aromatic compounds to produce a mixture of alkylbenzenes, the 2-alkylbenzene isomer is selectively cracked to lower boiling products, leaving the higher numbered isomers substantially unreacted. Subsequent sulfonation results in alkylphenylsulfonate derivatives having improved detergency properties.Type: GrantFiled: August 8, 1980Date of Patent: November 3, 1981Assignee: Mobil Oil CorporationInventor: Lewis B. Young
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Patent number: 4291185Abstract: A process for selective propylation of the benzene content of hydrocarbon mixtures wherein the mixture is brought into contact with propylene in the presence of a crystalline zeolite catalyst having a silica to alumina mole ratio of at least about 12 and a constraint index of from 1 to 12, to produce isopropylbenzene and diisopropylbenzene. The reaction may be carried out at temperatures of from about 100.degree. C. to the critical temperature of the benzene and at pressures ranging between about 10.sup.5 N/m.sup.2 and 6.times.10.sup.6 N/m.sup.2.Type: GrantFiled: August 8, 1979Date of Patent: September 22, 1981Assignee: Mobil Oil CorporationInventor: Warren W. Kaeding
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Patent number: 4288647Abstract: A process for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a particular type of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with compounds of the alkaline-earth metals (Ca, Sr, Ba), and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.Type: GrantFiled: March 10, 1980Date of Patent: September 8, 1981Assignee: Mobil Oil CorporationInventor: Chin-Chiun Chu
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Patent number: 4278827Abstract: A process for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a particular type of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with compounds of germanium, tin and/or lead, and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.Type: GrantFiled: April 7, 1980Date of Patent: July 14, 1981Assignee: Mobil Oil CorporationInventors: Chin-Chiun Chu, Warren W. Kaeding
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Patent number: 4276438Abstract: A process for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a particular type of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with compounds of copper, silver and/or gold, and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.Type: GrantFiled: May 27, 1980Date of Patent: June 30, 1981Assignee: Mobil Oil CorporationInventor: Chin-Chiun Chu
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Patent number: 4276437Abstract: A process for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a particular type of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with compounds of gallium, indium and/or thallium, and optionally phosphorus, to deposit thereon a minor proportion of such elements on the zeolite.Type: GrantFiled: May 23, 1980Date of Patent: June 30, 1981Assignee: Mobil Oil CorporationInventor: Chin-Chiun Chu
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Patent number: 4260841Abstract: Water-soluble oxygenates of Fischer-Tropsch synthesis separated from water and acids are sequentially upgraded by a dehydration catalyst and a special zeolite catalyst to produce gasoline, LPG and light fuel oil.Type: GrantFiled: September 4, 1979Date of Patent: April 7, 1981Assignee: Mobil Oil CorporationInventors: Robert E. Holland, Samuel A. Tabak
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Patent number: 4260843Abstract: A process for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a particular type of zeolite catalyst having a silica to alumina mole ratio of at least 12 and a constraint index of about 1-12, said catalyst having been modified by treatment with compounds of beryllium, and optionally phosphorus, to deposit a minor proportion of such elements on the zeolite.Type: GrantFiled: February 25, 1980Date of Patent: April 7, 1981Assignee: Mobil Oil CorporationInventor: Chin-Chiun Chu
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Patent number: 4258166Abstract: There is disclosed herein a uniaxially oriented plastic film material having improved strength and clarity in the direction of orientation with unexpected improvement in strength in the transverse (unoriented) direction. Preferred film materials of homopolymers and copolymers of ethylene having a density of 0.915 to 0.935 g/cm.sup.3.Type: GrantFiled: June 8, 1979Date of Patent: March 24, 1981Assignee: Mobil Oil CorporationInventors: Peter J. Canterino, Craig E. Allen
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Patent number: 4251676Abstract: An improved process for selective cracking of 1,4-disubstituted aromatic compounds whereby the yield of recyclable olefin cracking product is increased. The process is carried out in the presence of a specified type of crystalline zeolite cracking catalyst (e.g. ZSM-5) and the reactor feed is admixed with ammonia or an organic amine.Type: GrantFiled: December 28, 1979Date of Patent: February 17, 1981Assignee: Mobil Oil CorporationInventor: Margaret M. Wu
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Patent number: 4239618Abstract: A sequential twin tower fractionation arrangement for separating crude oil is described which is particularly concerned with lowering fractionation heat requirements in conjunction with reducing steam utilization in the combination operation.Type: GrantFiled: May 10, 1979Date of Patent: December 16, 1980Assignee: Mobil Oil CorporationInventors: Alfred M. Peiser, Ronald I. Graham, Joseph R. McClernon
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Patent number: 4239620Abstract: Removal of cyanide in wastewater treatment improved by initially contacting a rich cyanide bearing stream with activated sludge at a pH within the range of 3-6 upstream of the wastewater treating plant.Type: GrantFiled: April 16, 1979Date of Patent: December 16, 1980Assignee: Mobil Oil CorporationInventors: Brian E. Doll, Vernon F. Coty, Philip P. Lifland
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Patent number: 4234018Abstract: In a thermoplastic extrusion system where a single extruder feeds molten polymer through a manifold to a plurality of separate extrusion orifices, a valve system is provided which distributes and regulates the flow of the molten polymer to the individual extrusion orifices.Type: GrantFiled: November 24, 1978Date of Patent: November 18, 1980Assignee: Mobil Oil CorporationInventor: F. John Herrington, Jr.
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Patent number: 4105738Abstract: A flexible and foldable foam plastic sheet and a process for making same, said process comprising initially compressing the foam sheet between two surfaces at least one of which is a textured surface (e.g., screen like) to reduce the sheet in thickness and reduce or destroy the resilience of the foam, and then, when further reduction in thickness of the resulting sheet is desired, pressing the resulting compressed sheet between two substantially smooth surfaces to achieve such desired further reduction in thickness. Mechanical properties of the foam sheet so processed are desirably increased thereby producing a foam sheet product suitable as a replacement for paper in many applications.Type: GrantFiled: October 14, 1976Date of Patent: August 8, 1978Assignee: Mobil Oil CorporationInventor: Charles L. Rohn