Class 585/476 - By ring opening, removal, degradation, or shift on chain or other ring

Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter wherein the product has fewer rings than
No. of patents: 39
Last issue date: 04/15/2008

Number	Title	Issue Date
7358411	Hydrocracking of diphenylalkanes The invention relates to a hydrocracking process involving the steps of reacting a diphenyl alkane having a formulation of R1R2C(Ph)-(C)n(H)m-C(Ph)R3R4 with hydrogen using a catalyst containing a metal selected from the group consisting of Group IB and Group VIII me...	04/15/2008
7230148	Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based...	06/12/2007
7151199	Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One m...	12/19/2006
7081555	Process for hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds The present invention relates to an improved process for the hydrogenation of aromatics in hydrocarbon feedstocks containing thiopheneic compounds as impurities, the aromatics hydrogenation being conducted in a hydrogenation reactor in the presence of a nickel based...	07/25/2006
7041866	Solid-acid isomerization catalyst and process A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a sulfated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component co...	05/09/2006
6977322	Isomerization catalyst and processes A catalyst and process is disclosed to selectively upgrade a paraffinic feedstock to obtain an isoparaffin-rich product for blending into gasoline. The catalyst comprises a support of a tungstated oxide or hydroxide of a Group IVB (IUPAC 4) metal, a first component ...	12/20/2005
6900364	Method of recovering cumene A process for recovering cumene, characterized by subjecting 2,3-dimethyl-2,3-diphenylbutane produced in a process in which cumene is used, to hydrogenolysis in the presence of a catalyst thereby to convert it into cumene, and recovering the cumene. ...	05/31/2005
6133494	Catalyst composition comprising acid-base leached zeolites A catalyst composition and a process for hydrodealkylating C9 + aromatic compounds such as, for example, trimethylbenzenes, to C6 to C8 aromatic hydrocarbons such as toluene and xylenes are disclosed. The composition compr...	10/17/2000
6096193	Sulfur-tolerant aromatization catalysts A catalytic material is provided which effectuates the aromatization, reformation, and dehydrogenation of aliphatic, cycloaliphatic, and mixtures of aliphatic and cycloaliphatic hydrocarbons. The catalyst comprises an L-zeolite associated with a Group VII...	08/01/2000
5885443	Reforming with selective multimetallic multigradient catalyst A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing a uniformly distributed platinum-group metal component, a surface-layer metal component comprising one ore more of the Group IVA m...	03/23/1999
5755956	Stable, high-yield reforming catalyst A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst and a nonacidic large-pore molecular sieve....	05/26/1998
5534656	Organic compound conversion with MCM-58 This invention relates to use of synthetic porous crystalline MCM-58 as a catalyst component in catalytic conversion of organic compounds....	07/09/1996
5443715	Method for upgrading steam cracker tars A process for the production of gaseous olefins which involves introducing a hydrocarbon feedstock stream into a high temperature thermal cracking zone to produce a high temperature cracked product stream, quenching the cracked product stream to stop the ...	08/22/1995
5215649	Method for upgrading steam cracker tars A process for the production of gaseous olefins which involves introducing a hydrocarbon feedstock stream into a high temperature thermal cracking zone to produce a high temperature cracked product stream, quenching the cracked product stream to stop the ...	06/01/1993
5126461	Process for opening cyclopropane rings Process for ring opening compounds of the formula ##STR1## in which R1 is heteroaryl or aryl, R2 is a leaving group, R3, R4, R5 and R6 are independently selected from hydrogen, alkyl, ...	06/30/1992
5095160	Conversion of benzene to toluene Benzene is converted to toluene in the presence of free hydrogen and a supported nickel metal catalyst....	03/10/1992
5003119	Manufacture of alkylbenzenes A process for the manufacture of alkylbenzenes wherein a feed of fresh and recycle benzene and fresh olefin are reacted in the presence of an alkylation catalyst in an alkylator having at least two reaction stages wherein each stage is adiabatic. Essentia...	03/26/1991
4926000	Benzene conversion over ZSM-5 Benzene reacts with itself to produce liquid aromatic compounds having more than 6 carbon atoms, in the presence of zeolite characterized as a medium pore size and having an activity defined by an alpha value of at least 50....	05/15/1990
4385194	Method for promoting aluminum chloride catalyzed isomerization of _sym-octahydrophenanthrene to sym-octahydroanthracene with aralkyl halide A method is disclosed for promoting isomerization of sym-octahydrophenanthrene (s-OHP) to sym-octahydroanthracene (s-OHA) in the presence of a catalyst provided by aluminum chloride or aluminum bromide, or a mixture of these two compounds. The rate of iso...	05/24/1983
4375570	Method of treating alpha-methylbenzyl alcohol dehydration residues Residual products obtained in the catalytic dehydration of alpha-methylbenzyl alcohol are treated to recover increased quantities of ethylbenzene by a process which comprises thermally cracking the residual products in the substantial absence of hydrogen ...	03/01/1983
4255603	Dehydrocoupling of toluene Toluene dehydrocoupled products are produced by heating toluene in the vapor phase with an inorganic metal/oxygen composition which functions as an oxygen carrier and has the empirical formula: where M1 is thorium and M2 is an element sel...	03/10/1981
4234749	Catalytic oxidation/decarbonylation of polynuclear aromatic compounds This invention provides processes for the production of benzene from anthracene, 9,10-anthraquinone from anthracene, and benzene from 9,10-anthraquinone. In the conversion of anthracene to 9,10-anthraquinone, anthracene is reacted with a molecular oxygen-...	11/18/1980
4198535	Process for producing linear unsaturated dimers of ଱-alkyl styrenes A process for producing a linear unsaturated dimer of ଱-alkyl styrenes by heating ଱-alkyl styrenes in the presence of a silica-alumina catalyst, said catalyst consisting of alumina and silica in a weight ratio of 83/17ࣘAl2 O3...	04/15/1980
4157950	Conversion of hydrocarbons Crystalline aluminosilicate zeolites are used as catalysts for various hydrocarbon conversion processes and are particularly useful for conversion of paraffins in the presence of an alkylatable aromatic hydrocarbon such as benzene....	06/12/1979
4152361	Production of cyclohexene Cyclohexene may be produced from phenylcyclohexane by treating the latter compound at an elevated temperature in the presence of certain solid acidic catalysts such as zeolite or silica-alumina to produce the desired compound....	05/01/1979
4139452	Process for producing benzene A process for preparing benzene which involves heating a selected hydrocarbon stock containing condensed polynuclear aromatic rings in the presence of hydrogen under critical reaction conditions....	02/13/1979
4138411	Process for the isomerization of aromatic alkenyl compounds Aromatic alkenyl compounds, for example, eugenol and safrole, are isomerized, for example to isoeugenol and isosafrole, by contact with a ruthenium or osmium catalyst....	02/06/1979
4128473	Catalytic hydrotreating process Carbonaceous liquids boiling above about 300° C such as tars, petroleum residuals, shale oils and coal-derived liquids are catalytically hydrotreated by introducing the carbonaceous liquid into a reaction zone at a temperature in the range of 300° to 45...	12/05/1978
4123469	Process for production of bicyclic compounds Described is a process for producing bicyclic compounds having the generic structure: ##STR1## wherein R1 is one of the moieties: ##STR2## and wherein R2, R3 and R4 are the same or different and e...	10/31/1978
4123219	Chemical storage of radiant energy A method for the chemical storage of radiant energy in which substituted naphthalenes undergo photochemical dimerization by exposure to radiant energy to form 1,2,2a,7,8,12b-hexahydro-1,8,2,7-ethanedihylidenedibenzo[a,e]cyclobuta[c]c yclooctenes, whic...	10/31/1978
4117020	Method of producing valuable alkylated aromatic hydrocarbons from tar Valuable alkylated aromatic hydrocarbons are produced from a tar comprising that fraction of an alkylation reaction product distilling above about 240° C by a method comprising contacting the tar with benzene and/or toluene in the presence of a catalytic...	09/26/1978
4101416	Process for hydrogenation of hydrocarbon tars Hydrocarbon tars of high asphaltene content such as tars obtained from pyrolysis of coal are dissolved in a solvent formed from the hydrogenation of the coal tars, and the resultant mixture hydrogenated in the presence of a catalyst at a pressure from abo...	07/18/1978
4055582	Synthesis of nickel and palladium organophosphorus complexes A process is disclosed comprising reacting at least one compound of the formula RMX(PR3)2 and at least one compound of the formula APR2 to produce at least one composition which can be represented by the formula M(PQ3...	10/25/1977
4053531	Steam reforming of polycyclic hydrocarbons Polycyclic aromatic hydrocarbons are treated with steam in the presence of catalyst, typically containing oxides of nickel, potassium, chromium, and aluminum, to form aromatic products containing a lesser number of aromatic rings....	10/11/1977
4031154	Benzene by hydrogenative dealkylation In a process in which a hydrocarbon stream is hydrogenatively dealkylated to prepare benzene, small amounts of naphthalene may occur in the crude product. Instead of isolating and recovering such naphthalene, it is recycled to extinction so that the proce...	06/21/1977
3985640	Cracking with zeolite catalysts promoted with uranium or uranium plus silver Uranium oxide or uranium and silver oxides in combination with hydrogen or rare earth oxides are exchanged into zeolites as components of zeolite cracking catalysts to increase the olefin content of the gasoline and, thus, enhance the yield of high octane...	10/12/1976
3984490	Phenylcyclohexane formed by cracking dicyclohexylbenzene A process is described for recovering phenylcyclohexane as principal product from dicyclohexylbenzenes by heating the latter in the presence of at least an equal amount by weight of benzene and an acid clay or zeolite catalyst at a temperature of 190° - ...	10/05/1976
3959357	Method for continuously thermally decomposing synthetic macro-molecule materials Synthetic macro-molecule materials are continuously supplied into the cylinder of an extruder so that said synthetic macro-molecule materials are internally heated by the shearing as well as kneading action of the screw to which they are subjected and ext...	05/25/1976
3959121	Hydrocarbon conversion with an acidic multimetallic catalytic composite Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, an indium component, a cobalt co...	05/25/1976

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Class 585/476 - By ring opening, removal, degradation, or shift on chain or other ring