Patents
Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802)
10/1996
10/02/1996DE19512134A1 Katalysator zur Entfernung von Olefinen aus Aromaten oder Aromatengemischen Catalyst for the removal of olefins from aromatics or aromatic mixtures
10/02/1996CN1132192A Technique for prepn. of high pureness meta-dimethyl benzene
10/02/1996CN1032915C Improved normal paraffin adsorptive separation process using non-normal hydrocarbon pre-pulse stream
09/1996
09/25/1996EP0733608A1 Transalkylation of polyalkylaromatic hydrocarbons
09/25/1996EP0647157B1 Regeneration of acetylene converter catalysts by hydrogen stripping
09/25/1996CN1131654A Recovery and usage method for main component of cyclohexane oxidation by-product-X oil
09/24/1996CA2033219C Process for synthesizing low chlorine benzyltoluene and dibenzyltoluene
09/22/1996CA2172207A1 Transalkylation of polyalkylaromatic hydrocarbons
09/17/1996US5557030 Process for rejecting heavy hydrocarbons from light hydrocarbons gases
09/12/1996WO1996027634A1 Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes
09/12/1996WO1996027580A1 Hydrogenation of unsaturated cyclic compounds
09/11/1996EP0731073A2 Co-cracking of BPA and phenol process tabs
09/04/1996EP0729982A2 Process for the purification of non-reacted propylene in the production of polypropylene
09/04/1996CN1130167A A procedure for the production of a preproduct containing aromatic hydrocarbons for the generation of aromatics from coking plant crude benzene
09/03/1996US5551972 Absorption process without external solvent
08/1996
08/29/1996WO1996026170A1 Method for separating para-xylene by preprocessing using selective hydrogenation and activated earth
08/28/1996EP0728284A1 Cryogenic separation
08/21/1996EP0727405A1 Method for separating sulfone from a hydrocarbon stream having a small concentration of sulfone
08/21/1996CN1129214A Method for separating sulfone from a hydrocarbon stream having a small concentration of sulfone
08/20/1996US5547407 Boat motor trim and tilt assembly
08/20/1996US5546764 Using heavier hydrocarbons from exhaust gas stream as absorption solvents in stripping, then distillation yields ethylene in overheads and heavy hydrocarbons as bottoms, using no external solvents
08/14/1996EP0726241A1 Process for splitting tertiary butyl alcohol in a reaction and distillation column
08/14/1996CN1032532C Method for purification of low carbon alpha olefins
08/13/1996US5545786 Method for inhibiting premature polymerization of vinyl aromatic monomers
08/13/1996US5545782 Using a stable hindered nitroxyl compound
08/12/1996CA2169225A1 Process for cracking tertiary butyl alcohol in a reaction distillation column
08/01/1996DE19502857A1 Acetylene prodn. with high selectivity and reduced energy consumption
07/1996
07/30/1996US5540861 A reaction product of a phenol with sulfuric acid and nitric acid
07/25/1996WO1996022266A1 Hydroformylation of a multi-component feed stream
07/25/1996WO1996022262A1 Method for producing para-xylene by high-temperature crystallisation in at least one stage and partial crystal fusion
07/25/1996WO1996022260A2 Separation of linear from branched hydrocarbons
07/25/1996DE19600954A1 Composite membrane with increased permeability for selective removal of acidic gas
07/25/1996CA2209473A1 Hydroformylation of a multi-component feed stream
07/24/1996EP0722953A1 Recovery of hydrocarbons from polyalkene product purge gas
07/24/1996EP0722776A1 Alkyne hydrogenation process
07/24/1996CN1032371C Hydrocarbon oil compositions
07/18/1996WO1996021745A1 Regenerative mercury removal process
07/17/1996EP0721557A1 Improved thermodynamic separation
07/17/1996EP0539433B1 Process for adsorbing sulfur species from propylene/propane using regenerable adsorbent
07/11/1996WO1996020908A1 Paraxylene separation process comprising at least two high temperature crystallization stages
07/11/1996WO1996020907A1 Method for the separation of paraxylene involving at least one high temperature crystallization stage and at least one clay treatment located upstream of the adsorption area
07/09/1996US5533437 Recovery of hydrocarbons from polyalkene product purge gas
06/1996
06/26/1996EP0718269A1 Integrated process for the production of ter-amyl alkyl ethers
06/25/1996US5530172 Contacting with simulated moving bed acting as isomerization catalyst and adsorbent for alkane
06/25/1996US5530165 Using a hydrocarbon additive stream to alter compositions of overhead and bottoms products of etherification effluent fractionator; reduces alcohol concentration in overhead
06/25/1996CA2025618C Process for isolating xylene isomer(s) and/or ethylbenzene and inclusion-complexing agent for use in isolation of xylene isomer(s) and/or ethylbenzene
06/20/1996WO1996018704A1 Process for the removal of mercaptans and hydrogen sulfide from hydrocarbon streams
06/19/1996EP0717094A1 Process for the recuperation of solid paraffins from highly polluted poyolefinic wastes
06/13/1996CA2164783A1 Integrated process for the production of ter-amyl alkyl ethers
06/12/1996EP0715612A1 Isolation of high purity diamondoid, fractions and components
06/12/1996EP0715611A1 Dehydrogenation using dehydrogenation catalyst and polymer-porous solid composite membrane
06/12/1996EP0715610A1 Isoparaffin-olefin alkylation
06/12/1996EP0715609A1 Isoparaffin-olefin alkylation
06/12/1996CN1124241A Improved adsorptive separation of metalxylene from aromatic hydrocarbons
06/12/1996CN1124240A Method and apparatus for adjusting process for seperating arene isomer with 8-10 carbon atoms
06/12/1996CN1032005C Silicane derivatives, preparation containing derivatives and use as pesticide thereof
06/06/1996WO1996016921A1 A method for inhibiting premature polymerization of vinyl aromatic monomers
06/05/1996EP0714969A2 Inhibition of fouling or coke formation in hydrocarbon processing equipment
06/05/1996EP0485393B1 Membrane for extracting unsaturated hydrocarbons and process for obtaining it
06/04/1996US5523512 Separation of low molecular weight olefins from paraffins by complexing with a cuprous salt and high molecular weight olefin in an inert solvent
06/04/1996US5523326 Pressure swing adsorption
06/04/1996US5523271 Active reduced metal impregnated with metal oxide-zeolite support containing carbon
05/1996
05/29/1996EP0608227B1 Process for the selective hydrogenation of aromatic acetylene compounds
05/28/1996US5520724 Process for the recovery of low molecular weight C2+ hydrocarbons from a cracking gas
05/22/1996EP0712825A1 Improved adsorptive separation of metaxylene from aromatic hydrocarbons
05/21/1996US5518527 Method for recovering ethylene from vent gas from ethylene oxide plant vent gas
05/15/1996DE4430148A1 Sepn. of pure solvent from fluid mixt.
05/15/1996CN1122320A Method and apparatus for extracting alpha-methyl naphthalene and beta-methylnaphthalene
05/14/1996US5516965 Absorbing acetylene and oxygenated hydrocarbons in solvent; stripping, concentrating
05/14/1996US5516955 Catalytic distillation to produce orthoxylene and paraxylene
05/08/1996EP0710222A1 Method for inhibiting the polymerization of vinyl aromatics
05/08/1996CN1121911A Method for separating m-xylene from p-xylene
05/02/1996WO1996012542A1 An improved simulated moving bed adsorption separation process
05/01/1996EP0687248A4 Crystallization of 2,6-dimethylnaphthalene
05/01/1996CN1121501A Method for adding hydrogen with catalysis and catalyst which can be used in same
04/1996
04/24/1996EP0708167A1 Process for the production of a precursor product containing aromatic hydrocarbons for the recuperation of aromatics from raw coking benzene
04/24/1996EP0708089A1 Production of tertiary butyl hydroperoxide
04/24/1996EP0708072A1 Process for obtaining pure benzene and pure toluene
04/24/1996EP0708070A1 Process for the separation of paraffins mixed with olefins
04/24/1996CN1121103A Method of refining anthracene, phenanthrene and carbazole
04/23/1996US5510563 Alkenylation, cyclization, dehydrogenation, and isomerization
04/23/1996US5510562 Process for separating mixtures of aromatic C8 hydrocarbons
04/23/1996US5510556 Reacting trialkylaluminum and ethylene to produce mixture of normal alpha-olefins and tri/higher/alkylaluminum compounds, transalkylating in presence of cobalt-containing catalyst, reacting with aqueous acid or caustic to remove catalyst
04/23/1996US5510551 Separating carrot juice into carotenoid containing liquid fraction and pulp fraction, precipitating liquid fraction with solvent free precipitating agent like potassium hydorxide and magnesium chloride, separating rich portion
04/23/1996US5510550 Using catalyst comprising palladium, silver, inorganic support, reducing agent, alkali metal compound, nonreducing liquid component
04/23/1996US5510547 Adding mixture of a hydroxylamine and a phenylenediamine to vinyl aromatic monomer in oxygen-free processing system
04/18/1996WO1996011175A1 Process for manufacturing ethylbenzene or cumene
04/18/1996CA2201783A1 Process for manufacturing ethylbenzene or cumene
04/17/1996EP0706985A1 Production of a high purity ether product
04/17/1996EP0688308A4 Benzene reduction in gasoline by alkylation with higher olefins
04/17/1996CN1120528A Production of a high purity ether product
04/16/1996US5507919 Apparatus for the thermal and catalytic defluorination of alkylate
04/10/1996EP0705811A1 Process for recovering ethylene and propylene
04/10/1996EP0705810A2 Process for purification of starting materials for metal catalysed reactions and a purification reagent to be used therefor
04/10/1996EP0569502B1 Inhibiting popcorn polymer formation with alkyl halides
04/10/1996EP0393029B2 Processing nitrogen-rich, hydrogen-rich, and olefin-rich gases with physical solvents
04/10/1996CN1120036A N-substituting group-4-substituted benzyl-5-alkyl-5-substituted benzyl-pyrrolidone-2, and its intermediate, its synthetic method and its appliance
04/10/1996CN1120035A Separation method of C+10 heavy aromatic hydrocarbon
04/10/1996CN1031505C Process for separating ethene by calalytic cracking and dry gas adsorption
04/09/1996US5505048 Cooling, phase separation of liquids and gases; isentropic expansion