Class 585/318 - Having unsaturated ring

Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter wherein the product has olefinic unsaturation
No. of patents: 30
Last issue date: 08/12/2008

Number	Title	Issue Date
7411101	Production of alkylaromatic compounds A process for producing a monoalkylation aromatic product, such as ethylbenzene and cumene, utilizing an alkylation reactor zone and a transalkylation zone in series or a combined alkylation and transkylation reactor zone. ...	08/12/2008
7175754	Process for the production of low benzene gasoline A process for the production of low benzene content gasoline is disclosed wherein a full boiling range naphtha is fractionated to produce a light naphtha, a medium naphtha and a heavy naphtha. The benzene is contained in the medium naphtha and this stream is subject...	02/13/2007
7161050	Method and apparatus for synthesizing olefins, alcohols, ethers, and aldehydes A reactant selected from the group consisting of alkanes, alkenes, alkynes, dienes, and aromatics is reacted with a halide selected from the group including chlorine, bromine, and iodine to form a first reaction product. The first reaction product is reacted with a ...	01/09/2007
7148390	Integrated process for synthesizing alcohols, ethers, aldehydes, and olefins from alkanes Alcohols, ethers, aldehydes, and olefins are manufactured from alkanes by mixing an alkane and a halogen selected from the group including chlorine, bromine, and iodine in a reactor to form alkyl halide and hydrogen halide. The alkyl halide only or the alkyl halide ...	12/12/2006
6790342	Process to produce a dilute ethylene stream and a dilute propylene stream Processes are provided to produce a dilute ethylene stream and a dilute propylene stream from a cracked gas stream. One process comprises separating the cracked gas stream to produce a C3− stream and a C3+ stream; hydrog...	09/14/2004
6783659	Process to produce a dilute ethylene stream and a dilute propylene stream A process is provided to produce a dilute ethylene stream and a dilute propylene stream to be used as feedstocks for producing olefin-based derivatives. Specifically, the dilute ethylene stream is used as a feedstock to produce ethylbenzene, and the dilute propylene...	08/31/2004
6579419	Method for purifying norbornene by distillation For the purification of the norbornene obtained by the reaction of dicyclopentadiene or cyclopentadiene and ethylene, the crude reaction mixture containing light impurities having boiling temperatures lower than that of norbornene; medium-heavy impurities...	06/17/2003
6479719	Method and reactor for making norbornene This process for the manufacture of norbornene from dicyclopentadiene (DCPD) and ethylene is characterized in that the DCPD is subjected to partial monomerization to CPD by preheating: at a temperature of 140° C. to 240° C.; and under a pressure of 20 to 300...	11/12/2002
6444867	Process for linear alpha olefins Linear alpha olefins are typically produced by starting with a trialkylaluminum compound, such as triethylaluminum, and then subjecting the trialkylaluminum compound to alkyl chain growth conditions in the presence of ethylene and elevated temperature and...	09/03/2002
6388151	Synthesis of Tetraalkylcyclopentadienes A method for synthesizing tetramethylcyclopentadiene from 2,3-dibromobutane is described. A 2-bromo-2-butene Grignard is reacted with an ethyl formate to produce a 3,5-dimethyl-2,5-heptadiene-4-ol magnesium bromide which is then quenched with acetic acid ...	05/14/2002
6258989	Hydrocarbon upgrading process A hydrocarbon feedstock containing C.sub.5 olefins, C.sub.5 diolefins, CPD, DCPD, and aromatics is processed by the steps of heating a hydrocarbon feedstock containing CPD, DCPD, C.sub.5 diolefins, benzene, toluene, and xylene in a heating zone, to dimeri...	07/10/2001
6100435	Use of catalytic distillation to produce cyclopentane or cyclopentene A process is disclosed for converting dicyclopentadiene to cyclopentane and/or cyclopentene, wherein dicyclopentadiene is fed to a catalytic distillation column, the dicyclopentadiene is cracked to cyclopentadiene in the catalytic distillation column, the...	08/08/2000
5670681	Process for preparing a carbon-bridged biscyclopentadiene compound The present invention relates to a process for preparing a carbon-bridged biscyclopentadiene compound by reacting one or two cyclopentadiene compounds LH with a carbonyl compound in the presence of at least one base and at least one phase transfer catalys...	09/23/1997
5489724	High pressure drop endothermic process Aliphatic feeds are converted to olefins and/or aromatics in a multi pressure reactor system. A high pressure first stage reactor generates much or all of the hydrogen needed to reduce catalyst coking in lower pressure downstream reactors. High pressure o...	02/06/1996
5401891	Production of polymerization grade dicyclopentadiene A process for purifying crude dicyclopentadiene which comprises the steps of: cracking the crude dicyclopentadiene to form a monomeric-containing effluent which comprises at least one monomer selected from the group consisting of: C4 acyclic di...	03/28/1995
5321177	Process for the vapor-phase thermal cracking of dicyclopentadiene and a process for the manufacture of high purity dicyclopentadiene Recently, as a process for manufacturing cyclopentadiene resin-shaped articles, an attention has been given to reaction injection molding (RIM). To conduct RIM, it is necessary to use high purity dicyclopentadiene (DCPD) as the raw material. Vapor-phase t...	06/14/1994
5284986	Upgrading of normal pentane to cyclopentene This invention is a process of converting n-pentane to cyclopentene. In accordance with a preferred embodiment n-pentane feed is converted in a dual temperature stage-dual catalyst process without interstage processing of the first-stage product mixture....	02/08/1994
4985203	Conversion system for converting oxygenates to hydrocarbons Aliphatic oxygenates are converted to high octane gasoline by an integrated reactor system wherein three reaction zones are utilized. In a first reaction zone the oxygenates are directly converted to gasoline and an isobutane by-product. In a second react...	01/15/1991
4895996	Synthesis of alkenes from enamines via hydroboration Alkenes are prepared by the hydroboration of enamines followed by an elimination reaction to form the alkene. This process has wide applicability and is useful for the stereospecific synthesis of [Z] isomers. It is preferred to use 9-borabicyclo[3.3.1 non...	01/23/1990
4886924	Stereospecific synthesis of [E]-alkenes from enamines via hydroboration A process for the stereospecific synthesis of [E] alkenes from enamines comprising the steps of hydroborating the enamine; esterifying the organoborane so formed and oxidizing the boronic ester in the presence of hydrogen peroxide and in the absence of ad...	12/12/1989
4827045	Etherification of extracted crude methanol and conversion of raffinate An improved process for reacting crude aqueous methanol feedstock with iso-olefinic hydrocarbons to produce C5+ methyl tertiary-alkly ethers, which comprises: contacting the aqueous methanol feedstock with a liquid hydrocarbon extra...	05/02/1989
4654453	Process for converting oxygenates to hydrocarbons Aliphatic oxygenates are converted to high octane gasoline by an integrated process wherein three reaction zones are utilized. In a first reaction zone the oxygenates are directly converted to gasoline and an isobutane by-product. In a second reaction zon...	03/31/1987
4393258	1-Cyclohexyl-2-cyclohexylphenylethane derivatives A 1-cyclohexyl-2-cyclohexylphenylethane derivative of the following general formula ##STR1## wherein R1 and R2, independently from each other, represent a linear alkyl group having 1 to 7 carbon atoms....	07/12/1983
4367360	Method for product isolation and catalyst recovery in aluminum chloride catalyzed isomerization of sym-octahydrophenanthrene to sym-octahydroanthracene A method is disclosed for extracting sym-octahydroanthracene (s-OHA) from a product isomer mixture formed by the aluminum chloride catalyzed isomerization of sym-octahydrophenanthrene (s-OHP). Isolation of the s-OHA product isomer is accomplished by conta...	01/04/1983
4147672	Cyclic C₆ ketones in perfumes New oxygenated alicyclic derivatives useful as perfuming and odor modifying agents in the manufacture of perfumes or perfumed products, and as flavoring and taste-modifying agents in the aromatization of foodstuffs in general and imitation flavors for foo...	04/03/1979
4139569	Vapor phase cracking of dicyclopentadiene and synthesis of 2,3-dihydroxycyclopentadiene and cyclopentene Improved process for vapor phase cracking of dicyclopentadiene and synthesis of 2,3-dihydrodicyclopentadiene therefrom. Initially, a feedstock consisting essentially of dicyclopentadiene and cyclopentene is subjected to thermocracking in the vapor phase, ...	02/13/1979
3979471	Process for synthesizing ethylenic compounds The invention relates to a process for the preparation of ethylenic compounds and to certain novel ethylenic compounds produced by the process. The process comprises the reaction of an appropriate carbonyl compound with a sulphone to obtain an alcohol sul...	09/07/1976
3949006	Synthesis of vitamin A, intermediates and conversion thereof to vitamin A A synthesis of novel Vitamin A intermediates from betaionone is described as well as a conversion of the intermediates to Vitamin A. The length of the conjugated aliphatic side chain of beta-ionone is increased while still ultimately obtaining the desired...	04/06/1976
3932546	Preparation of polyenes Polyenes are synthesized from unsaturated materials having allylic hydroxyl groups, which react with imidosulfides to produce sulfones. Removal of the sulfone group, e.g. by reaction with alkyllithium and iodine, results in compounds in which the allylic ...	01/13/1976
3932516	Novel oxygenated derivatives of thujopsene There are provided novel oxygenated pentamethyldecalins and dehydro derivatives thereof which are lasting odorants of woody character and which are useful in the perfumery art. These novel compounds are prepared by oxidation of cis-thujopsene and cis-dihy...	01/13/1976

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Class 585/318 - Having unsaturated ring