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JPS5725564B2 |
There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which has a nitrile substituent. Also ...
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JPS5782326A |
A process for the conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. The reaction is carried out in the presence of a particular type of zeolite ca...
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JPS57500772A |
PCT No. PCT/SE81/00174 Sec. 371 Date Jan. 21, 1982 Sec. 102(e) Date Jan. 21, 1982 PCT Filed Jun. 10, 1981 PCT Pub. No. WO81/03609 PCT Pub. Date Dec. 24, 1981.A device to facilitate putting an elastic envelope (1) on a part projecting fro...
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JPS5747714A |
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JPS5713532B1 |
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JPS5746927A |
PURPOSE: To prepare high purity isobutylbenzene, by contacting a mixture of isobutylbenzene and secondary butylbenzene with a specific catalyst in the presence of m-xylene or tetralin, thereby alkylating only the secondary butyl benzene....
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JPS5740419A |
PURPOSE: In preparing the titled substance from benzene and propylene, to obtain the desired substance in high yield inexpensively by maintaining an active coefficient of a catalyst and reaction temperature in an alkylating and a transal...
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JPS577134B2 |
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JPS5711927A |
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 ra...
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JPS5711926A |
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 ra...
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JPS572693B2 |
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JPS56169628A |
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 ra...
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JPS56161837A |
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JPS56160317A |
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JPS56145227A |
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 ra...
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JPS56142226A |
Resorcinol is prepared in high yield and purity by an improved process through superacid (such as perfluorinated alkanesulfonic acids of one to eighteen carbon atoms or polymeric perfluorinated resinsulfonic acids, such as acidified Nafi...
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JPS56139425A |
A process for the manufacture and/or conversion of hydrocarbons comprises contacting as feed any of: a gaseous mixture of carbon monoxide and hydrogen, acyclic organic compounds, hydrocarbon compounds, and mixtures thereof, under convers...
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JPS56139138A |
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JPS56133223A |
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 ra...
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JPS56133225A |
PURPOSE: To obtain ethylbenzene advantageously in two stages, by separating diethylbenzene and triethylbenzene from the transalkylation product, and recycling the latter into an alkylation zone and the former into a transalkylation zone....
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JPS5644049B2 |
1402503 Alkylation and transalkylation of aromatic hydrocarbons MOBIL OIL CORP 14 March 1973 [12 May 1972] 12261/73 Heading C5E Aromatic hydrocarbons are alkylated in the vapour phase with an alkylating agent, e.g. an olefin, in an alkyl...
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JPS5638569B1 |
Mixts. of straight-chain alkenes having the number of C atoms within the desired range are produced by preparing mixts. of alkenes lower and higher than those desired (by preliminary oligo- and iso-merisation), and then catalytically dis...
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JPS5638527B2 |
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JPS5629644B2 |
Process for isomerizing a saturated hydrocarbon which is carried out in the presence of a catalyst obtained by contacting a catalyst carrier with a group VIII noble metal compound and with a hydrocarbylaluminium halide.
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JPS5681525A |
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JPS5628581B2 |
1414488 Disproportionation catalysts BP CHEMICALS INTERNATIONAL Ltd 16 July 1973 [17 Aug 1972] 38411/72 Heading B1E [Also in Division C5] Alumina-supported rhenium heptoxide catalysts are made using alumina which has been digested with a...
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JPS5643222A |
A process for preparing primary substituted n-alkane compounds, comprising contacting the olefin product of an olefin metathesis reaction having an alpha-olefin as the reactant with a bis-cyclopentadienyl zirconium hydrohalide and, after...
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JPS5613685B2 |
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JPS5613686B2 |
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JPS5610290B2 |
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JPS568012B1 |
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JPS569214A |
Preparation of zeolites having the formula:wherein Y ranges from 20 to 90, Z ranges from 2 to 12, M is at least one cation and n ist the valence of M; said preparation comprises the admixing of diethyl-piperidinium hydroxide [(DEPP)+OH-]...
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JPS562532B2 |
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JPS5546368B2 |
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JPS5545531B2 |
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JPS5542969B1 |
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JPS5533689B2 |
A process for producing cyclopolyenes (1,5, . . . 4n + 5) having 12 + 4n carbon atoms where n is an integer of from 1 to 7 comprising polymerizing cyclododecatriene (1,5,9) in the presence of a rhenium catalyst using alumina or alumina-b...
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JPS5533688B2 |
A process for producing cyclopolyenes (1,5, . . . . 4n + 5) having 8 + 4n carbon atoms where n is an integer of from 1 to 7 comprising polymerizing cyclooctadiene in the presence of a rhenium catalyst using alumina or alumina-boria as a ...
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JPS5529054B1 |
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JPS5588857A |
A method is provided for regeneration of a catalyst comprising a crystalline aluminosilicate zeolite characterized by a silica to alumina mole ratio of at least about 12, a constraint index, as hereinafter defined, within the approximate...
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JPS5522143B2 |
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JPS5522148B1 |
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JPS5521016B2 |
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JPS5516566B1 |
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JPS5535027A |
PURPOSE: The gas-phase disproportionation of toluene is effected in the presence of a catalyst of crystalline aluminosilicate zeolite modified with vanadium metal or its oxide to produce xylenes of high p-isomer content with industrial a...
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JPS5531088A |
Disproportionation of toluene to produce benzene and xylenes rich in the para isomer is accomplished by subjecting toluene to disproportionation conditions in the presence of a catalyst comprising the crystalline aluminosilicate zeolite ...
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JPS558211B2 |
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JPS557409B2 |
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JPS54160321A |
The present invention relates to a process for the hydrocatalytic treatment of a hydrocarbon feedstock which is a mixture of alkyl aromatics containing at least one di- or polymethyl benzene and an alkyl benzene selected from ethyl-benze...
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JPS54160320A |
A process is disclosed for the conversion of certain difficultly converted aliphatic oxygen-containing hydrocarbons to aromatic hydrocarbons by contacting them in low concentrations with certain other aliphatic oxygen-containing hydrocar...
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