Class 585/606 - O-containing

Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter wherein the nonhydrocarbon contains oxygen.
No. of patents: 22
Last issue date: 10/28/2008

Number	Title	Issue Date
7442844	Process for producing isoprene A process for producing isoprene is provided, which includes continuously or intermittently supplying isobutylene and/or t-butanol, formaldehyde and water into an acidic aqueous solution, and reacting the reaction mixture while distilling away a mixture containing p...	10/28/2008
7273961	Quench process The present invention is a process for quenching a reactor effluent stream. The reactor effluent stream comprises water, olefin product, and methanol and is further entrained with catalyst fines. The process removes water, catalyst fines, and methanol. Particularly,...	09/25/2007
6667423	Process for the production of a diene in three successive stages from a tertiary alkyl ether For the production of a diene a process in three stages comprises a stage a) for decomposition of at least one tertiary alkyl ether in a mixture that contains at least one tertiary olefin, at least one alcohol and at least one residual ether, in the presence o...	12/23/2003
5264644	Preparation of conjugated dienes The invention relates to a process for the preparation of a conjugated diene from the corresponding carbonyl compound having the same number of carbon atoms by dehydration at a temperature of 300° to 450° C. using a catalyst comprising aluminium phospha...	11/23/1993
5177290	Isoprene process The present invention is directed to a process for producing dienes which involves reacting a reaction mixture of tertiary alkyl ether and a source of oxygen over two functionally distinct catalysts under reaction conditions sufficient to produce high yie...	01/05/1993
5124498	Synthesis of olefins from carbonyls The invention provides, in a first aspect, a method for preparing a reduced metal reagent comprising the steps of providing a halide salt of a metal having a more positive reduction potential than Na in admixture with liquid Na in substantially stoichiome...	06/23/1992
4899002	Integrated staged conversion of methanol to gasoline and distillate A process for the increased production of olefinic gasoline is described incorporating the integration of olefins to gasoline conversion under moderate severity conditions in contact with zeolite type catalyst with oxygenates to olefins conversion. The pr...	02/06/1990
4734538	Process for the production of dienes Aldehydes can be converted to dienes by contacting the aldehydes with a non-zeolitic molecular sieve. Preferably the non-zeolitic molecular sieve has, in its calcined form, an adsorption of isobutane of at least about 2 percent by weight of the non-zeolit...	03/29/1988
4713458	Preparation of ethenylidenes Ketones and aldehydes are converted to ethenylidene-containing compounds by reaction thereof with dimethyl carbonate and a phosphine compound....	12/15/1987
4684758	Production of 2,5-dimethyl-2,4-hexadiene 2,5-Dimethyl-2,4-hexadiene which is an intermediate for preparing agricultural chemicals, insecticides or medicines, is prepared by bringing isobutylene and/or tert.-butyl alcohol into contact with isobutyl aldehyde in a gaseous phase at a temperature of ...	08/04/1987
4665266	Polymer bound dehydration catalyst and process for the production of dienes This invention is directed to a process and a catalyst for the conversion of an aldehyde to a diolefin comprising contacting an aldehyde of 4 to 6 carbon atoms in the vapor phase at a temperature of 200° to 300° C. with a polymer bound dehydration catal...	05/12/1987
4628140	Process for the production of dienes from aldehydes This invention is directed to an improved process for the conversion of an aldehyde to a diolefin comprising contacting an aldehyde of 4 to 6 carbon atoms in the vapor phase at a temperature of 250° to 400° C. with a catalyst, the improvement comprising...	12/09/1986
4587372	Boron phosphate catalyst for the production of dienes from aldehydes This invention is concerned with improved boron phosphate dehydration catalysts. More specifically, this invention is directed to a process for the conversion of an aldehyde to a diolefin comprising contacting an aldehyde of 4 to 6 carbon atoms in the vap...	05/06/1986
4560822	Preparation of dienes by dehydration of aldehydes Dienes are prepared by dehydration of aldehydes at elevated temperatures by a method in which the dehydration is carried out using a zeolite as a catalyst....	12/24/1985
4547614	Process for the preparation of conjugated dienes by dehydration of aldehydes An improved process for the preparation of conjugated dienes, particularly isoprene, from the corresponding aliphatic aldehyde using an acidic dehydration catalyst is disclosed. The present invention embraces the surprising discovery that catalyst activit...	10/15/1985
4524233	Process for the production of dienes from aldehydes This invention is directed to a process for the conversion of an aldehyde to a diolefin comprising contacting an aldehyde of 4 to 6 carbon atoms in the vapor phase at a temperature of 300° to 400° C. with a catalyst comprising boron phosphate wherein th...	06/18/1985
4381416	Process for producing isoprene A process for producing isoprene, which comprises decomposing a mixture of at least two compounds represented by the general formula ##STR1## wherein (i) W and Y each represent a hydrogen atom, and X and Z are identical or different and each represen...	04/26/1983
4338478	Process for producing conjugated dienes A process for producing a conjugated diene represented by the general formula ##STR1## wherein R3, R4 and R5 each represent a hydrogen atom, or any one of them represents a methyl group and the other two each represen...	07/06/1982
4045419	Chemical process for producing isoprene by pyrolysis of allylic esters Process for preparing unsaturated esters by reacting an olefin having an allylic hydrogen atom with an ester forming material in the presence of oxygen and a catalyst selected from the group consisting of mercury, selenium or tellurium. The unsaturated es...	08/30/1977
4039583	Process for producing methacrolein In a process for producing methacrolein by the gas phase catalytic reaction of isobutene with molecular oxygen in the presence of a catalyst consisting of Mo, Bi, Fe, Co, Sb and O, the catalyst is prepared by using as the Sb component, a mixture of a triv...	08/02/1977
4009084	Process for the separation of diolefins from mixtures containing the same A multi-stage process for the solvent extraction of butadiene from a mixed feed stock containing butadiene, C-4 saturated and olefinic hydrocarbons and acetylenic compounds is disclosed wherein the feed stock is contacted with N-formyl morpholine and C-4 ...	02/22/1977
3988332	Hydrocarbylidene compounds of niobium and tantalum Certain hydrocarbylidene compounds of niobium and tantalum react with oxo compounds to form olefins and are also useful as oxygen scavengers. The compounds can also be used to deposit tantalum or niobium mirrors by thermal decomposition. Exemplary is trin...	10/26/1976

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Class 585/606 - O-containing