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Matches 451 - 500 out of 1,951

Document Document Title
WO/1997/005088
This invention relates to a process for preparing hydrocarbons, in particular hydrogenation of carbon dioxide over Fe-K/Al2O3 catalyst, which is reduced in hydrogen and activated in the mixture of carbon dioxide and hydrogen.  
WO/1996/037580
Novel fluid mixtures of specified hydrocarbons meeting an array of structural criteria are described. Linear hydrocarbons having terminal double bonds and internal segments of specified differing chain lengths separated by one or more ca...  
WO/1996/037571
A mixed gas refrigerant for use as a replacement for CFC refrigerants, and specifically, for R-12, which includes at least three components including R-134a, R-124, and n-butane, with the n-butane being at least present in trace amounts ...  
WO/1996/036581
A process for converting at least one olefin and at least one paraffin to a diesel fuel blending component comprises the steps of contacting said olefin and said isoparaffin with a catalyst selected from the group consisting of MCM-22, M...  
WO/1996/030439
Azeotropic compositions made up of: a) one compound selected from (1) about 26 to about 88 % by weight perfluorohexane, (2) about 4 to about 50 % by weight 1,3-dioxolane, or (3) about 64 to about 87 % by weight 1,1,1,4,4,4-hexafluorobuta...  
WO/1996/010062
Compositions include compositions of 1,1,2,2,3,3,4,4-octafluorobutane and a hydrocarbon having from 3 to 7 carbon atoms. Specific examples include 1,1,2,2,3,3,4,4-octafluorobutane and butane, cyclopropane, isobutane, propane, cyclopentan...  
WO/1996/007477
The invention pertains to a catalyst at least comprising a hydrogenation metal component and a swelling synthetic clay consisting of elemental clay platelets, with the average diameter of the clay platelets not exceeding 1 micron and the...  
WO/1996/005155
In the proposed process for obtaining high-octane gasoline components, the starting mixture consisting of isobutane and olefins, preferably butylenes, in a molar ratio of between 1 and 40, is brought into contact with a heterogeneous aci...  
WO/1996/003473
A composition for use in a heat transfer device such as a refrigeration or air conditioning system is described which comprises: (A) at least one hydrofluorocarbon selected from the group consisting of difluoromethane (R-32) and 1,1,1-tr...  
WO/1996/000201
Method for removing catalyst from an olefinic oligomerization product, comprising the steps of oligomerizing one or more olefins in presence of a BF3 cocatalyst complex, and distilling the oligomerization product while separating vaporiz...  
WO/1995/028373
An azeotropic composition comprising cis-1,1,2,2,3,4-hexafluorocyclobutane and at least one compound selected from the group consisting of methanol, ethanol, isopropaneol, n-propanol, tert-butanol, cyclopentane, n-octane, isooctane, n-he...  
WO/1995/020556
The invention refers to the oxidative dimerization of methane to ethylene or to ethane and ethylene via successive and repeated contact of a methane-oxygen gas mixture with a suitable catalyst and with a porous adsorbent or absorbent mat...  
WO/1995/018846
A mixed gas refrigerant for use as a replacement for CFC refrigerants, and specifically, for R-12, which includes at least three components including R-134a, R-124, and n-butane.  
WO/1995/016650
Alpha,omega-diene oligomers which are useful as synthetic lubricants are prepared by oligomerizing an alpha,omega-diene using an organoaluminum.  
WO/1995/015934
A process for the selective hydrogenation of the diolefins and acetylenic compounds in an olefin-rich aliphatic hydrocarbon stream (1) comprises contacting the feed stream (1) at 40-300 �F under low hydrogen partial pressure of 0.1-70 ...  
WO/1995/010011
A process for separation of gases into two components of different boiling points, for example in the separation of ethane from natural gas, comprises a first separation tower (V1) and a second separation tower (V2). Liquid in stream (5)...  
WO/1995/009215
Well fluids such as drilling muds, especially useful in offshore drilling, are formulated with a hydrocarbon oil blend of a low viscosity poly alpha-olefin (PAO) such as a low molecular weight oligomer of decene together with a C12 to C1...  
WO/1995/008602
A refrigerant composition for use in a vapour-compression refrigeration apparatus as a replacement for currently used refrigerants R22 and R12 comprises a mixture of pentafluoroethane (R125), tetrafluoroethane (R134a), a hydrocarbon sele...  
WO/1995/006693
Compositions of 1,1,1,2,3,4,4,5,5,5-decafluoropentane, bis(fluoromethyl) ether, 2,2,4,4-tetrafluorooxetane, 2,2,3,3-tetrafluorooxetane, 1,1,1,2-tetrafluoro-2-(fluoromethoxy)ethane, 1-(difluoromethoxy)-1,2,2-trifluoroethane, 1-(difluorome...  
WO/1995/006017
An isoparafin-olefin alkylation process comprising the sequential steps of (a) alkylating a mixed isoparaffin-olefin feed (10) in the presence of an alkylation catalyst (12) comprising HF and sulfolane in a riser reactor (20), whereby ac...  
WO/1995/006016
An isoparaffin-olefin alkylation process comprising (a) alkylating an isoparaffin-olefin feed stream (10) in the presence of an alkylation acid catalyst (12) containing HF and sulfolane in a riser reactor (20) where acid soluble oligomer...  
WO/1995/003121
A catalyst comprises a hydrogenation/dehydrogenation component, such as a noble metal, deposited on an acidic solid product formed by modifying a Group IVB metal oxide with an oxyanion of a Group VIB metal. An example of this catalyst is...  
WO/1994/029246
The average degree of branching of a branched olefin feedstock is reduced by skeletal isomerization in contact with a molecular sieve.  
WO/1994/026837
Refrigerant compositions include mixtures of hexafluorodimethyl ether and cyclopropane, dimethylether or propylene; bis(difluoromethyl)ether and 2,2,3,4,4-pentafluorooxetane; fluoromethyl trifluoromethyl ether and 2,2,4,4,5,5-hexafluoro-...  
WO/1994/023008
Azeotropic compositions include a perfluorinated alkane or alkene and an organic solvent, selected from the group consisting of hydrofluorocarbons, hydrochlorofluorocarbons, siloxanes, ethers, 2, 3-dimethyl butane, 2, 3-dimethyl pentane ...  
WO/1994/015894
The invention concerns a process for producing synthetic oils, wherein olefinic hydrocarbons are polymerized to form an oily product having a high viscosity index and a low pour point. According to the invention, higher linear alpha-olef...  
WO/1994/014734
A discrete catalyst and processes for the isomerization of alkanes and alkenes and the alkylation of isoalkanes with alkenes under homogeneous fluid conditions. The catalyst is formed by contacting, under fluid conditions, a homogeneous ...  
WO/1994/013600
A method for separating conjunct polymers which are formed as byproducts of acid catalyzed isoparaffin-olefin alkylation and sulfolane from a mixture (10) containing conjunct polymers, sulfolane, and hydrofluoric acid comprises: (a) sepa...  
WO/1994/013400
The surface area of a zinc oxide composition is increased, and stabilized to heating, by incorporation of a tri or tetravalent metal, especially aluminium or gallium, e.g. in the form of a spinel with the zinc oxide. The composition is p...  
WO/1994/011460
Refrigerant compositions include mixtures of 1,1,2-trifluoroethane and a second component wherein the second component is (CF3)2NF, (CF3)3N, N(CHF2)2(CF3), N(CH2F)(CF3)2, SF5CF2H, SF5C2F5, HFC-236ca, HFC-236cb, HFC-236ea, HFC-254cb, HFC-...  
WO/1994/008899
The present invention relates to new crystalline zeolite SSZ-35 prepared by processes for preparing crystalline molecular sieves, particularly large pore zeolites, using conformationally constrained aza-polycyclic ring system templating ...  
WO/1994/009083
Refrigerant compositions include mixtures of bis(difluoromethyl) ether and a second component wherein the second component is 1-trifluoromethoxy-1,1,2,2-tetrafluoroethane, difluoromethoxy pentafluoroethane, 1-trifluoromethoxy-1,2,2,2-tet...  
WO/1994/009082
Substantially constant boiling compositions that are mixtures of difluoromethane and propane that are useful as refrigerants, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, and expansion agents ...  
WO/1994/003415
A process for alkylating an olefin with an isoparaffin comprising contacting an olefin-containing feed with an isoparaffin-containing feed in the presence of crystalline microporous materials such as MCM-22, MCM-36, and MCM-49, under alk...  
WO/1994/002243
This invention is directed to a catalyst system for use in the alkylation of isoparaffin with olefins. More specifically, this invention is directed to an improved catalyst system containing specified amounts of water and a component of ...  
WO/1994/002564
Refrigerant compositions include mixtures of pentafluorodimethyl ether and a second component, wherein the second component is ammonia, dimethyl ether, cyclopropane, propane or propylene. The invention also relates to azeotropic or azeot...  
WO/1993/025501
A process for isoparaffin-olefin alkylation is provided that permits the use of solid catalysts which require frequent regeneration and high isoparaffin/olefin ratios. The process comprises circulating in a reactor (10) a slurry comprisi...  
WO/1993/024214
A supported catalyst comprising a carbon fibril aggregate and a catalytically effective amount of a catalyst supported therein, a process for performing a catalytic reaction in fluid phase using the supported catalyst and a process for m...  
WO/1993/024428
The invention concerns a method for the production of light C¿2+?-hydrocarbons, in particular ethylene and ethane, from cracked gas, in particular from a gas produced by a fluid catalytic cracking process. The invention proposes that th...  
WO/1993/019025
The present invention provides a process for alkylation of an isoparaffin with an olefin in the presence of acid catalyst composition comprising from 50 to 80 weight percent hydrofluoric acid, from 20 to 50 weight percent sulfolane, and ...  
WO/1993/015162
Compositions comprising difluoromethane, 1,1,1,2-tetrafluoroethane and a member selected from the group consisting of 1,1-difluoroethane, 1,1,1-trifluoroethane, propane and dimethyl ether having a vapor pressure from about 12.2 psia to a...  
WO/1993/011090
In a process for the isomerization of C4 and higher molecular weight hydrocarbons, preferably C4 to C6 paraffins with high C6 cyclics content, a C5 to C6 hydrocarbon stream is isomerized in a first isomerization reaction zone (80) and a ...  
WO/1993/010065
This invention is a process for the regeneration of solid acidic hydrocarbon conversion catalysts, but particularly certain transition aluminas and zeolites promoted with Lewis acids (preferably BF3) which have been used in the alkylatio...  
WO/1993/008145
There is provided a combination process for ring opening of aromatics and cycloaliphatics, as well as isomerization of aliphatics using a feedstream comprising hydrocarbons having 6 carbon atoms and at least two reactors connected in ser...  
WO/1993/006069
The 177°-343 °C (350°-650 °F) portion of the product from the oligomerization of light olefins with surface-deactivated shape selective medium pore zeolite catalyst comprises olefinic hydrocarbons having unique and desirable structur...  
WO/1993/002157
A hydrogenation process for reducing the unsaturation of lubricants uses a catalyst which is based on an ultra-large pore crystalline material. The crystalline material has pores of at least 1.3 nm (13 Å) diameter arranged in a uniform ...  
WO/1993/000164
This invention is a process for the regeneration of a catalyst system component comprising certain transition aluminas promoted with a Lewis acid (preferably BF3) which have been used in the alkylation of isoparaffin with olefins. The pr...  
WO/1993/000314
The invention provides a method for increasing rainout from an autorefrigerated vaporous cloud containing hydrofluoric acid formed from the escape of hydrofluoric acid from its containment facility comprising admixing from about 50 to ab...  
WO/1992/021637
A process for the alkylation of at least one olefin with at least one paraffin in the presence of an alkylation catalyst to produce alkylates wherein the at least one olefin is alkylated with at least one paraffin in the presence of a sl...  
WO/1992/020431
A system and method for separating acid gas from natural gas which utilizes a hybrid membrane system comprising a hydrogen sulfide membrane assembly, an acid gas membrane assembly, and, optionally, a dehydration membrane assembly. This h...  

Matches 451 - 500 out of 1,951