Patents
Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802)
04/1996
04/03/1996EP0704418A1 Process for the preparation of 1,2,4,5-dimethyldiisopropylbenzene
04/03/1996CN1119636A Inhibition of the polymerization of vinylaromatic or vinyliphatic compounds
04/03/1996CN1119635A Method of seperation of C2/C3 hydrocarbon compounds in ethen apparatus
04/02/1996US5504268 Process for the selective hydrogenation of aromatic acetylene compounds
04/02/1996US5504251 Co-cracking of BPA and phenol process tars
04/02/1996US5502972 Condensation; subcooling; flashing; demethanization; distillation; refrigeration
03/1996
03/28/1996CA2158307A1 Process for the preparation of 1,2,4,5-dimethyldiisopropylbenzene
03/27/1996CA2132947A1 Manufacture of high purity benzene and para-rich xylenes by combining aromatization and selective disproportionation of impure toluene
03/21/1996WO1996008673A1 A method for inhibiting hydrate formation
03/14/1996WO1996007477A1 Catalyst comprising at least a hydrogenation metal component and a synthetic clay
03/13/1996EP0700984A2 Selective hydrogenation of hydrocarbon fractions containing mono- and poly-unsaturated hydrocarbons
03/13/1996CN1031269C Polymerization inhibitor and inhibiting method for vinyl compound
03/12/1996US5498823 Ion-exchange supports for facilitated transport membranes with enhanced selectivity
03/12/1996US5498822 Purification
03/12/1996US5498339 Multistage separation of fluid with membranes containing nonporous layers
03/12/1996US5497626 Open loop mixed refrigerant cycle for ethylene recovery
03/06/1996EP0699468A1 Removal of olefins from mixtures thereof
03/06/1996CN1117956A Method for removing micro-impurity of carbon monoxide from gas mixture
03/01/1996CA2157088A1 Removal of olefins from mixtures thereof
02/1996
02/28/1996EP0666767A4 High purity benzene production using extractive distillation.
02/27/1996US5495061 Adsorptive separation of para-xylene with high boiling desorbents
02/22/1996WO1996004889A1 Process for preparing beclomethasone dipropionate freon® clathrate
02/22/1996CA2196171A1 Process for preparing beclomethasone dipropionate freon? clathrate
02/21/1996EP0697386A1 Process for the inhibition of the polymérisation of vinyl aromatic or vinyl aliphatic compounds
02/21/1996EP0381720B1 Low pressure noncryogenic processing for ethylene recovery
02/13/1996US5491270 Using a zeolite catalyst
02/06/1996US5489725 Process and device for catalytic dehydrogenation of a C2+ paraffinic charge comprising means for inhibiting the freezing of water in the effluent
02/06/1996US5489720 Adding catalytic amount of a phenylenediamine compound along with a hydroxylamine polymerization inhibitor
02/06/1996US5489718 Mixture of an oxime compound and a hydroxylamine compound
01/1996
01/30/1996US5488192 Method for inhibiting the polymerization of styrene
01/30/1996US5488024 Palladium, silver, supports
01/30/1996US5487816 Process for the reduction of phenol content in a crude organic stream recovered from a phenol stripper
01/25/1996WO1996001685A1 An in-situ crystallized zeolite containing composition (lai-isc)
01/25/1996CA2193258A1 An in-situ crystallized zeolite containing composition (lai-isc)
01/24/1996CN1115573A Process for the purification of medium-chain olefins
01/24/1996CN1115312A Combined distillation and permeation process for the separation of oxygenated compounds from hydrocarbons and use thereof in etherification
01/23/1996US5486542 Process for the distillation of Fisher-Tropsch products
01/10/1996EP0580745B1 Extraction of carotenoids from natural sources
01/04/1996WO1996000201A1 Method for removing catalyst from an oligomer product
01/03/1996EP0690117A2 Compositions and methods for inhibiting vinyl aromatic monomer polymerization
01/03/1996EP0689872A1 Pd and Ag containing catalyst for the selective hydrogenation of acetylene
01/02/1996US5481060 Process for the removal of heavy hydrocarbonaceous co-products from a vapor effluent from a normally gaseous hydrocarbon dehydrogenation reaction zone
12/1995
12/27/1995EP0688760A1 Addition salts of acyl-amino acids and alpha-aryl-amines and process for the optical resolution of alpha-arylamines
12/27/1995EP0688748A1 Method for removing catalyst from an oligomer product
12/27/1995EP0688308A1 Benzene reduction in gasoline by alkylation with higher olefins
12/27/1995EP0569359B1 Inhibiting popcorn polymer formation with compounds incorporating group iv elements
12/26/1995US5478541 Separately removing mercaptans and hydrogen sulfide from gas streams
12/26/1995CA1337820C Process for c _recovery
12/22/1995CA2148172A1 Addition salt of acyl-amino acid and .alpha.-aryl amine and process for optical resolution of .alpha.-arylamine
12/20/1995EP0687248A1 Crystallization of 2,6-dimethylnaphthalene
12/20/1995CN1113483A Method for purification of - olefins for polymerization use and method for production of poly-olefins
12/19/1995US5476988 Settling aids for solids in hydrocarbons
12/19/1995US5476985 Using alkylene-bridged polysilsesquioxane adsorption agent, desorbing
12/13/1995EP0686615A1 Process for the catalytic hydrogenation and catalyst useable in this process
12/13/1995EP0542794B1 Hydrocarbon treatment
12/12/1995US5475147 Production of tertiary butyl hydroperoxide
12/06/1995CN1112911A Improved precooling for ethylene recovery in dual demethanizer fractionation systems
11/1995
11/29/1995CN1112539A Tritower batch rectification method of isopropyl naphthalene
11/28/1995US5470440 2,6-di-tert-butyl-4-methylphenol and a substituted benzoquinonediimide
11/28/1995CA2021175C Chabazite for gas separation
11/23/1995DE4437702C1 Recovering pure benzene@ and toluene@ from aromatic hydrocarbon starting product
11/22/1995EP0683148A1 Process for the separation of ethylbenzene by adsorption on cesium exchanged zeolite X
11/22/1995EP0683147A1 Method for purification of alpha-olefins for polymerization use and method for production of poly-alpha-olefins
11/22/1995EP0683146A1 Process for the separation of C2/C3 hydrocarbons in ethylene production plants
11/21/1995CA2149179A1 Process for adsorptive separation of ethylbenzene from other c8 hydrocarbons using cesium exchanged x
11/21/1995CA1337605C Low pressure noncryogenic processing for ethylene recovery
11/20/1995CA2149724A1 Method for purification of .alpha. olefins for polymerization use and methd for production of poly-.alpha.-olefins
11/15/1995EP0523164B1 Removal of organochlorides
11/14/1995US5466345 Separation of o-xylene from p-xylene and m-xylene by azeotropic distillation
11/09/1995DE19513838A1 Distn. of styrene, for use in prodn. of plastics
11/07/1995US5464657 Vaporization and coating
10/1995
10/31/1995US5463168 Catalytic conversion to ammonia with magnesia/silica, stannic oxide, lithium oxide and vanadia/titania in presence of water;
10/31/1995US5463154 Hydrogenation to ethylene
10/31/1995US5463134 Catalytic distillation of hydrogen-free feed stream to form a paraffin overhead and bottoms product containing sulfides and dimerized olefins
10/31/1995US5462583 Absorption process without external solvent
10/24/1995US5460712 Coker/visbreaker and ethylene furnace antifoulant
10/24/1995US5460700 Separation of 1-hexene from hexane by extractive distillation
10/17/1995US5458741 Separation of benzene from close boiling hydrocarbons by extractive distillation
10/12/1995WO1995026947A1 Single temperature stage crystalization to recover paraxylene
10/12/1995WO1995026946A1 Crystallization of paraxylene from high purity paraxylene feeds
10/12/1995CA2186457A1 Crystallization of paraxylene from high purity paraxylene feeds
10/11/1995EP0626935B1 Process for separating an intake flow consisting essentially of hydrogen, methane and c 3/c 4 hydrocarbons
10/11/1995CN1109856A Mixed refrigerant cycle for ethylene recovery
10/11/1995CN1109855A Open loop mixed refrigerant cycle for ethylene recovery
10/11/1995CN1109795A Method for recovery of remainder portion of material absorbed on absorbent
10/10/1995US5457260 Control process for simulated moving adsorbent bed separations
10/04/1995EP0675190A2 Olefin recovery method
10/04/1995EP0675094A2 Hybrid condensation-absorption olefin recovery
10/02/1995CA2145013A1 Enhanced olefin recovery process
09/1995
09/27/1995CN1109066A Process for the production of alkene polymers
09/26/1995US5453561 Reactive separation process
09/26/1995US5453560 Process for adsorptive separation of ethylbenzene from aromatic hydrocarbons
09/26/1995US5453559 Refrigeration
09/26/1995US5453167 Separation of xylenes by extractive distillation
09/19/1995CA1337018C Process for the transport of an hydrate-forming fluid
09/13/1995CN1108232A Process to recover benzene from mixed hydrocarbons
09/13/1995CN1108153A Method for inactivating catalyst in preparation of linear 2-olefin by oligomerizing ethene with catalyst
09/12/1995US5449853 Process for separating hydrocarbons using alkylene-bridged polysilsesquioxanes
09/08/1995WO1995023835A1 Absorption process without external solvent
09/05/1995US5448005 Single temperature, recycling slurry filtrate