Patents in Class 568/487

Matches 1 - 50 out of 90

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Match	Document	Document Title
1	8062482	Acetaldehyde removal from methyl acetate by distillation at elevated pressure A method for removing acetaldehyde from a mixture of methyl acetate, methanol and acetaldehyde includes: (a) feeding the mixture of methyl acetate, methanol and acetaldehyde to a distillation...
2	7847129	Method for dehydrogenating alcohols A method for dehydrogenating primary or secondary alcohols having 1 to 12 carbon atoms to give the corresponding aldehydes or ketones in which the alcohol is brought into contact with a...
3	7745667	Microchannel apparatus comprising structured walls, chemical processes, methods of making formaldehyde Methods for controlling series or series-parallel reactions are described. Novel microchannel apparatus having mesoporous structures adjacent to bulk flow paths are described. Methods of...
4	7381851	Method for producing formaldehyde A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and...
5	6909019	Process for preparing aldehydes A process is disclosed for preparing aldehydes by isomerization of the corresponding unsaturated primary alcohols using a transition metal catalyst system, in an alcoholic solvent and in the...
6	6479710	Method of catalyzing a gas phase reaction using an acid-base catalyst composed of vanadium pentoxide hydrate A solid acid-base catalyst contains vanadium pentoxide hydrate. Moreover, it is preferable that the vanadium pentoxide hydrate in the solid acid-base catalyst has a composition which is represented...
7	6472566	Apparatus for the preparation of formaldehyde from methanol An apparatus for preparing formaldehyde from methanol by dehydrogenation in a reactor in the presence of a catalyst at a temperature in the range from 300 to 1000° C., a carrier gas stream which ...
8	6388102	Process for the preparation of trioxane and polyoxymethylene copolymers Processes for making trioxane, polyoxymethylene and polyoxymethylene copolymers from formaldehyde, made by the dehydrogenation of methanol in the presence of a catalytic active species set free...
9	6350918	Alcohol conversion Preparing an aldehyde from an alcohol by contacting the alcohol in the presence of oxygen with a catalyst prepared by contacting an intimate mixture containing metal oxide support particles and...
10	6329555	Preparation of substituted butenes Described is a process for preparing substituted butenes of the formula I and/or II, ##STR1##where the radical R is unsubstituted or mono- or di-C1 -C10 -alkoxy-substituted or mono- or...
11	6166265	Processes for the preparation of n-butyraldehyde, n-butanol and mixtures thereof Process for the preparation of n-butyraldehyde and/or n-butanol, wherein a) 1,3-Butadiene or a butadiene-containing hydrocarbon mixture is reacted with an alcohol of the formula I ROH I, where R is...
12	6111139	Process for the preparation of trifluoropropanal A compound having the formula 3,3,3-trifluoropropanal oxime, and an improved process for forming 3,3,3-trifluoropropanal and its oxime. The process for producing 3,3,3-trifluoropropanal involves...
13	5986146	Process and reactor for heterogeneous exothermic synthesis of formaldehyde A process for the heterogeneous exothermic synthesis of formaldehyde, in particular in a reactor of the type comprising a plurality of adiabatic catalytic beds connected in series, provides the...
14	5959154	Process for heterogeneous exothermic synthesis of formaldehyde A process for the heterogeneous exothermic synthesis of formaldehyde, in particular in reactors of the type comprising a plurality of adiabatic catalytic beds connected in series, provides the step...
15	5786518	Process for the manufacture of a gamma-halotiglic aldehyde A novel process for the manufacture of a γ-halotiglic aldehyde HalH2 C--CHC(CH3)--CHO I!, wherein Hal signifies chlorine or bromine, comprises haloalkoxylating a 1-alkoxy-2-methyl-1,3-butadiene H2...
16	5559275	Process for the conversion of lower alcohols to higher branched oxygenates A process is provided for the production of branched C4+ oxygenates from lower alcohols such as methanol, ethanol, propanol and mixtures thereof. The process comprises contacting the lower alcohols...
17	5554790	Process for producing acetic anhydride and acetic acid In a process for producing acetic anhydride and acetic acid by reacting methanol and methyl acetate, optionally together with dimethyl ether, with carbon monoxide, acetic anhydride and acetic acid...
18	5401884	Preparation of formaldehyde by oxidative dehydrogenation of methanol in the presence of dinitrogen oxide Formaldehyde is prepared by oxidative dehydrogenation of methanol in the gas phase on a silver or silver-containing catalyst by means of an oxygen-containing gas which contains dinitrogen oxide.
19	5330958	Catalyst granules, in particular for the oxidative dehydrogenation of methanol in order to yield formaldehyde A configuration of cylindrical catalyst granules displays a trilobed or triangular cross-section provided with three through-bores equidistant from each other, each of which through-bores has its...
20	5132465	Oxidation of primary alcohols to aldehydes using transition metal phthalocyanines as catalysts Primary alcohols may be oxidized to the corresponding aldehydes using non-toxic oxidizing agents such as tert-butyl hydroperoxide (TBHP) in the presence of a transition metal phthalocyanine...
21	5008463	Process for the preparation of formaldehyde The process dehydrogenates methanol in the presence of a catalyst based on aluminum oxide, alkali metal aluminate and/or alkaline earth metal aluminate with the exclusion of oxygen at a temperature...
22	4990685	Process for the preparation of aqueous formaldehyde solutions In a process for the preparation of aqueous formaldehyde solutions consisting of the following steps: (a) reaction of a methanol/water/air mixture in vapor form at elevated temperature over a...
23	4939292	Synthesis of esters from alcohols containing carbon monoxide as an impurity Esters are prepared by contacting, under suitable reaction conditions, a feed stream comprising a primary alcohol of 1-4 carbon atoms per molecule (preferably methanol, ethanol) and carbon monoxide...
24	4908477	Removal of organic iodine compounds from carbonylation products of methanol methyl acetate and dimethyl ether Organic iodine compounds are separated from carbonylation products of methanol, methyl acetate and dimethyl ether and from mixtures of such carbonylation products by a process wherein the iodine...
25	4788347	Process for producing formaldehyde Formaldehyde is prepared by dehydrogenating methanol in the substantial absence of oxygen and in the presence of a catalyst which is a zinc-silicon complex oxide obtained by mixing a solution...
26	4628113	Alcohol carbonylation process using a bimetallic cobalt catalyst A process for the preparation of carboxylic acids, alcohols, aldehydes or the secondary products thereof which comprises reacting an alcohol having from one to about twenty carbon atoms with...
27	4628121	Preparation of acetaldehyde Acetaldehyde is prepared by reacting methanol with carbon monoxide and hydrogen in the presence of a catalyst comprising a cobalt component, a tin component, and a halogen component.
28	4625049	Alcohol carbonylation process using a bimetallic nickel catalyst A process for the preparation of carboxylic acids, alcohols, aldehydes or the secondary products thereof which comprises reacting an alcohol having from one to about twenty carbon atoms with...
29	4600529	Dehydrogenation of alcohols using alkali carbonate catalysts Alkali metal carbonates have been found to be effective catalysts for dehydrogenation of primary and secondary alcohols. The dehydrogenated products may be either predominantly ketones and...
30	4599454	Synthesis of ketones from alcohols Higher ketones are prepared by contacting, under suitable reaction conditions, a feed stream comprising (a) a primary alcohol of 2-6 carbon atoms per molecule (preferably ethanol, 1-propanol or...
31	4594463	Synthesis of aldehydes from alcohols A catalyst has been found for the low pressure hydroformylation of alcohols to produce aldehydes. This catalyst consists of a rhodium containing compound, an iodide containing compound, and a...
32	4556744	Process for the production of ethanol and/or acetaldehyde by the metal catalysed liquid phase reaction of methanol, carbon monoxide and hydrogen in the presence of a solvent A recycle solvent for use in a metal catalysed process for the production of ethanol and/or acetaldehyde by the liquid phase reaction of methanol, carbon monoxide and hydrogen is provided. The...
33	4551556	Process for producing carbonyl compounds The invention relates to a process of producing a carbonyl compound by dehydrogenating a linear aliphatic alcohol of 1 to 6 carbon atoms in the gas phase in the presence of a solid catalyst...
34	4507508	Process for the production of unsaturated mono- or saturated dialdehydes and acetals thereof Unsaturated mono- and saturated di-aldehydes and acetals are produced by reacting a conjugated diolefine with carbon monoxide and hydrogen in the presence of an alcohol and a catalyst comprising...
35	4480135	Process for oxidizing alcohols to aldehydes and/or ketones A process for oxidizing primary and/or secondary alcohols to the corresponding aldehyde and/or ketone derivatives, consisting of reacting said alcohols with an aqueous solution of hydrogen peroxide...
36	4476326	Process for the synthesis of ethanol and acetaldehyde using cobalt compounds with novel promoters Ethanol and/or acetaldehyde are prepared in good yield by contacting methanol, hydrogen and carbon monoxide with a catalyst system comprising a cobalt-containing compound and a promoter in the...
37	4438020	Catalyst suitable for preparing aldehydes A catalyst particularly suitable for selectively producing aldehydes, particularly acetaldehyde, which comprises (1) cobalt, (2) iodine and (3) a ligand containing atoms from Group VB of the...
38	4433178	Process for preparing acetaldehyde from methanol and synthesis gas using a novel catalyst composition Acetaldehyde is prepared in good yield from methanol and synthesis gas by contacting the mixture of methanol, carbon monoxide and hydrogen with an iodide or iodine-free catalyst composition...
39	4429165	Hydroformylation process Process for selective production of acetaldehyde and dimethyl acetal by the reaction of methanol with carbon monoxide in contact with a catalyst containing cobalt atom, halide atom and a mixture of...
40	4420641	Formaldehyde production New catalysts comprising lead and silver on supports having relatively low surface areas and their use have been found to be useful in the oxidative dehydrogenation of methanol to formaldehyde at...
41	4408080	Process for producing acetaldehyde In a process for producing acetaldehyde which comprises reacting a mixture of methanol and methyl acetate with carbon monoxide and hydrogen in the presence of a cobalt-iodine catalyst, the...
42	4408069	Conversion of methanol to methyl acetate using iron-cobalt catalyst A homogeneous catalytic process for the conversion of methanol to methyl acetate. The process comprises contacting CO with methanol in the presence of a catalytically effective amount of an...
43	4405815	Process for the production of acetaldehyde and ethanol Improved process for the production of acetaldehyde and ethanol by reacting methanol with carbon monoxide and hydrogen in the presence of a catalyst system containing cobalt, elemental iodine or...
44	4389532	Process for the preparation of acetaldehyde The present invention provides a process for the preparation of acetaldehyde from hydrogen, carbon monoxide, and methanol. The process comprises conducting the reaction in the presence of a...
45	4383124	Method for the preparation of aldehydes An improved process for the dehydrogenation of alcohols, to produce aldehydes therefrom, using a copper-containing catalyst, is described wherein the alcohol is introduced in the gas phase...
46	4376732	Niobium or tantalum catalysts for the preparation of ethylenimine An improved catalyst suitable for the dehydration of an alkanolamine in the vapor phase to produce an alkylenimine which catalyst contains an oxide of niobium or tantalum. Optionally an alkaline...
47	4374752	Catalyst and process for the conversion of methanol to acetaldehyde A catalyst mixture is made with improved activity and selectivity to acetaldehyde by using an inert diluent and specifically defined concentrations of cobalt, a halide, a trivalent phosphorus...
48	4361707	Process for producing aldehydes A process for selectively producing aldehydes, particularly acetaldehyde, which comprises introducing into a reaction zone (1) methanol, (2) carbon monoxide, (3) hydrogen, (4) cobalt, (5) iodine...
49	4361706	Process for preparing aldehydes A process for selectively producing aldehydes, particularly acetaldehyde, which comprises introducing into a reaction zone (1) methanol, (2) carbon monoxide, (3) hydrogen, (4) cobalt, (5) iodine...
50	4354045	Preparation of formaldehyde Formaldehyde is prepared by dehydrogenation of methanol in the presence of a catalyst containing copper, zinc and tellurium, at from 300° to 750° C.The formaldehyde obtainable by the process of t...

Matches 1 - 50 out of 90

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