Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 451 - 500 out of 4,381

Document Document Title
WO/1998/022213A1
The invention concerns a NU-86 zeolite, containing silicon, and at least one element T selected from the group formed by aluminium, iron, gallium and boron, preferably aluminium, characterised in that the element T has been extracted fro...  
WO/1998/019980A1
A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit, comprising, (a) a...  
WO/1998/017609A1
A process for the recovery of propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. The stream is cooled and/or expanded to partially condense it, then separated to provide one or more C�3? c...  
WO/1998/012160A1
A process for the removal of vinylacetylene, ethylacetylene and 1,2-butadiene from C�4? aliphatic hydrocarbon streams comprising, concurrently: (1) feeding hydrogen and a hydrocarbon stream comprising C�4? hydrocarbons including buta...  
WO/1998/011037A1
The present invention relates to a Fisher-Tropsch catalyst comprising a compound of a catalytically active metal supported on a titania catalyst carrier having a rutile:anatase ratio of less than 2:3, and a surface area of less than 75 m...  
WO/1998/009725A1
This invention concerns a catalyst which, for instance, is suited for hydrogenation and consists of at least one catalytically active metal in a low-valence state on an essentially carbon substrate. This substrate consists of carbon whic...  
WO/1997/048666A1
The liquid product of an alkylation process is at least partially vaporised, at least a part of the vapour phase is condensed and optionally, the liquid condensate is flashed. The liquid phase resulting from one or both condensations is ...  
WO/1997/046487A2
The invention features an activated silica enriched mazzite of chemical formula, in anhydrous state, expressed in molar ratios as: a M2/nO; Al2O3; b SiO2, with a varying from 0 to 0.5, M being an alkaline cation of valency n and b being ...  
WO/1997/045198A1
There is provided a zeolite bound zeolite catalyst which can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises a f...  
WO/1997/045383A1
The instant invention relates to a fluid catalytic isoparaffin-olefin alkylation process in which a circulating fluidized-bed reactor is employed and the catalyst is continuously regenerated. A solid catalyst which comprises a large pore...  
WO/1997/044304A1
The description relates to a process for the catalytic hydrogenation of terpenoids with water in the presence of a transition metal catalyst, in which the hydrogenation is performed in the homogenous phase in the presence of a catalyst c...  
WO/1997/033847A1
A turbine-powered, synthesis-gas system and method include a gas turbine (206) having a synthesis gas production unit (202) and a synthesis unit (204) disposed between the compression section (208) and expansion-turbine section (210) of ...  
WO/1997/033689A1
There is provided a method for preparing an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal. An example of this acidic solid is zirconia, modified with tungstate. This modified solid oxide m...  
WO/1997/032834A1
A feedstock is alkylated in presence of a hydrogen fluoride containing catalyst, which also comprises a carrier. Possible carriers are: a synthetic water soluble polymer like sodium acrylate or a salt like ammonium trifluoroacetate, ammo...  
WO/1997/032901A1
A process for the production of ethers and alkylate from a paraffin feedstock. The process includes a novel arrangement of dehydrogenation, isomerization, separation, etherification and alkylation to provide such products.  
WO/1997/032238A1
This invention relates to a solvent system and process for cleaning cellulose triacetate polymer camera film. The solvent system comprises n-propyl bromide and a mix of an alkyl bromide in which the alkyl group contains 4 to 7 carbon ato...  
WO/1997/029162A1
A refrigerant mixture which scarcely effects the ozonosphere in the stratosphere, is less likely to cause global warming, and can be used as such together with conventional compressor lubricating oils other than ester oil in a convention...  
WO/1997/025141A1
An alkylation catalyst including at least one porous refractory metal oxide with at least one halogen on the surface thereof, said catalyst being characterised in that it further contains 0.005-1 wt % of at least one metal from groups IA...  
WO/1997/024224A1
Organically-functionalized metal nanoparticles are produced by mixing a metal precursor with an organic surface passivant and reacting the resulting mixture with a reducing agent to generate free metal while binding the passivant to the ...  
WO/1997/021787A1
Discloses high purity solvent compositions constituted of n-paraffins and isoparaffins, with the isoparaffins containing predominantly methyl branches, and having an isoparaffin:n-paraffin ratio sufficient to provide superior low tempera...  
WO/1997/019752A1
The invention pertains to a process for preparing an activated catalyst composition in which a catalyst composition comprising a Group VIII noble metal and a hydrocarbon-substituted aluminium compound on an alumina carrier containing up ...  
WO/1997/019041A1
An improved process for alkylation of isoparaffins with olefins to yield a product which includes a high proportion of highly branched alkylates for blending into gasolines is disclosed. The catalyst comprises a large pore zeolite such a...  
WO/1997/016399A1
A methane concentration method for removing carbonic acid gas from an anaerobic digestive fermentation gas and concentrating and recovering methane by using an apparatus (10) including a pre-stage module (11) with a membrane (11a) and a ...  
WO/1997/016501A1
An azeotrope-like composition comprising: (A) 1,1,1,2-tetrafluoroethane and (B) n-pentane. Also described is a heat transfer device comprising the azeotrope-like composition.  
WO/1997/009397A1
The invention pertains to a selective hydroisomerisation method for compounds with one or more n-alkane chains containing 10 carbon atoms or less, wherein said compound to be treated is contacted with a catalyst including at least one hy...  
WO/1997/005088A1
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/1996/037580A1
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/1996/037571A1
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/1996/036581A1
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/1996/030439A1
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/1996/010062A1
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/1996/007477A1
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/1996/005155A1
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/1996/003473A1
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/1996/000201A1
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/1995/028373A1
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/1995/020556A1
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/1995/018846A1
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/1995/016650A1
Alpha,omega-diene oligomers which are useful as synthetic lubricants are prepared by oligomerizing an alpha,omega-diene using an organoaluminum.  
WO/1995/015934A1
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/1995/010011A1
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/1995/009215A1
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/1995/008602A1
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/1995/006693A1
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/1995/006017A1
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/1995/006016A1
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/1995/003121A1
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/1994/029246A1
The average degree of branching of a branched olefin feedstock is reduced by skeletal isomerization in contact with a molecular sieve.  
WO/1994/026837A1
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/1994/023008A1
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 ...  

Matches 451 - 500 out of 4,381