| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 560241000 | Preparing esters from hydrocarbons | 21 |
| 20120108842 | Methods for Producing a Vinyl Acetate Composition Having a Low Impurity Content - In one embodiment, the invention is to a method for producing a vinyl acetate composition. The method comprises the step of contacting acetic acid, oxygen, and ethylene under conditions effective to form a crude vinyl acetate composition comprising vinyl acetate, acetic acid, residual oxygen, and water. The method further comprises the step of contacting the crude vinyl acetate composition or a derivative thereof with at least one scavenger to form a treated crude vinyl acetate composition. | 05-03-2012 |
| 20130261330 | Processes for Producing Vinyl Acetate Composition Having Low Impurity Content - The present invention, in one embodiment, is to a process for inhibiting impurity formation a vinyl acetate formation reaction. The process comprises the step of providing a reactor comprising an inlet section, an outlet section, a filler (or fillers), and a catalyst block section. The filler is disposed in the outlet section. The catalyst block section may be in communication with and configured between the inlet and outlet sections. The process further comprises the steps of introducing the reactants to the inlet section and contacting the reactants in the catalyst block section under conditions effective to form a crude vinyl acetate composition. The process may further comprise the step of directing the crude vinyl acetate composition into the outlet section, which comprises the filler. | 10-03-2013 |
| 20140066649 | Process for Producing Vinyl Acetate - The present invention relates to a process for forming vinyl acetate. The process comprises the step of providing a reaction mixture having an initial heat capacity. The reaction mixture comprises acetic acid, oxygen, ethylene, and optionally water. The process further comprises the step of adding to the reaction mixture at least one heat capacity modifier to form an increased heat capacity reaction mixture. The process further comprises the step of contacting the acetic acid, oxygen, and ethylene over a catalyst under conditions effective to form a crude vinyl acetate product. The crude vinyl acetate product comprises vinyl acetate and water. | 03-06-2014 |
| 20160046557 | PROCESS FOR THE PREPARATION OF VINYL ACETATE - A process for the preparation of vinyl acetate by a heterogeneously catalysed, continuous gas-phase reaction of ethylene, acetic acid and oxygen in a reactor, where process heat liberated during the reaction is removed from the reactor by means of heat exchange with water, generating intrinsic steam, the product mixture leaving the reactor and comprising ethylene, vinyl acetate, acetic acid, water, carbon dioxide and inert gases is separated by distillation using one or more azeotrope columns and/or one or more pure distillation columns, wherein at least one azeotrope column and/or pure distillation column contains packings, and intrinsic steam is used at least partially for introducing energy into the thus-equipped azeotrope columns and/or pure distillation columns. | 02-18-2016 |
| 560242000 | From acetylenic hydrocarbons | 1 |
| 20140058127 | PRODUCTION OF VINYL ACETATE FROM A METHANE CONVERSION PROCESS - Methods and systems are provided for converting methane in a feed stream to acetylene. The method includes processing the acetylene to form a stream having vinyl acetate. A hydrocarbon stream is introduced into a supersonic reactor and pyrolyzed to convert at least a portion of the methane to acetylene. The reactor effluent stream is treated to convert acetylene to vinyl acetate. The method according to certain aspects includes controlling the level of carbon monoxide to prevent undesired reactions in downstream processing units. | 02-27-2014 |
| 560243000 | From olefins utilizing Group VIII noble metal catalyst | 12 |
| 20080287703 | LAYERED COMPOSITION AND PROCESSES FOR PREPARING AND USING THE COMPOSITION - A layered composition which can be used in various processes has been developed. The composition comprises an inner core such as a cordierite core and an outer layer comprising a refractory inorganic oxide, a fibrous component and an inorganic binder. The refractory inorganic oxide layer can be alumina, zirconia, titania, etc. while the fibrous component can be titania fibers, silica fibers, carbon fibers, etc. The inorganic oxide binder can be alumina, silica, zirconia, etc. The layer can also contain catalytic metals such as gold and platinum plus other modifiers. The layered composition is prepared by coating the inner core with a slurry comprising the refractory inorganic oxide, fibrous component, an inorganic binder precursor and an organic binding agent such as polyvinyl alcohol. The composition can be used in various hydrocarbon conversion processes including production of vinyl acetate. | 11-20-2008 |
| 20100121100 | Supported palladium-gold catalysts and preparation of vinyl acetate therewith - Disclosed is a catalyst. The catalyst comprises palladium, gold, and a support comprising titanium dioxide and tungsten trioxide. The support preferably comprises from 75 wt % to 99 wt % of titanium dioxide and from 1 wt % to 25 wt % of tungsten trioxide. A method for preparing the catalyst is also disclosed. The method comprises impregnating the support with a palladium compound and a gold compound, calcining the impregnated support, and then reducing the calcined support. Further disclosed is a method for preparing vinyl acetate with the catalyst. The catalyst exhibits improved catalytic activity and selectivity. | 05-13-2010 |
| 20100168465 | PROCESS FOR PRODUCTION OF CATALYST FOR ALKENYL ACETATE PRODUCTION - A catalyst is produced by a process that comprises at least a step of impregnating a carrier with an alkali solution having a mass of greater than 0.9 times and no greater than 1.0 times the amount of water absorption of the carrier, a step of further impregnating the carrier by contact with a solution A comprising at least a compound containing palladium or platinum and a compound containing a Group 11 element, a step of reduction treatment and a step of loading an acetic acid salt on the carrier, wherein the carrier is first impregnated with the alkali solution and then the contacted with solution A to form a catalyst precursor, and wherein the total amount of the alkali solution and solution A is a mass of at least 1.1 times and no greater than 10.0 times the amount of water absorption of the carrier. A catalyst for alkenyl acetate production is obtained that exhibits improved activity and selectivity. | 07-01-2010 |
| 20120289737 | METHOD FOR PRODUCING A METAL-CONTAINING SHELL CATALYST WITHOUT INTERMEDIATE CALCINING - A method for producing a shell catalyst which comprises, in the outer shell, one or more of the following metals: Pd, Pt, Ag and Au. Also the use of the shell catalyst produced using the method according to the invention for the production of vinyl acetate monomer, in the hydrogenation of hydrocarbons, in particular the selective hydrogenation of polyunsaturated hydrocarbon compounds, or in the oxidation of alcohols to ketones/aldehydes/carboxylic acids. | 11-15-2012 |
| 20140066650 | Process for Vinyl Acetate Production Having Sidecar Reactor for Predehydrating Column - A process for producing vinyl acetate in which a secondary reactant stream is obtained from a predehydrating column and reacted in a sidecar reactor to further increase conversion of ethylene, acetic acid, and molecular oxygen and increase production of vinyl acetate. | 03-06-2014 |
| 20140081040 | PROCESS FOR PRE-TREATMENT OF A CATALYST SUPPORT AND CATALYST PREPARED THEREFROM - Methods of forming noble metal catalysts, noble metal catalysts formed therefrom and process for using noble metal catalysts are described herein. The methods generally include contacting a support material with a pre-treatment agent including a dilute basic solution of an alkali or alkaline earth metal to form a contacted support; drying the contacted support to form a pre-treated support; and impregnating the pre-treated support with at least one noble metal to form the noble metal catalyst. | 03-20-2014 |
| 20140081041 | COPPER-PROMOTED SHELL CATALYST FOR PRODUCING ALKENYL CARBOXYLIC ACID ESTERS - A method for producing a shell catalyst which is suitable for the synthesis of alkenyl carboxylic acid esters, in particular for producing vinyl acetate monomer (VAM) from ethylene or allyl acetate monomer from propylene by means of oxy-acetylation. Also, a shell catalyst that can be obtained by the method according to the invention, as well as the use of the shell catalyst produced using the method for producing alkenyl carboxylic acid esters, in particular vinyl acetate monomer (VAM) and allyl acetate monomer. | 03-20-2014 |
| 560245000 | Gas phase | 5 |
| 20080249331 | Vinyl Acetate Catalyst and Support - A microspheroidal support for the manufacture of a vinyl acetate catalyst which support comprises substantially inert microspheroidal particles of a mixture of silica and 0.5 to 5 wt % (based on the total weight of the support) of aluminium oxide. A vinyl acetate catalyst comprising the microspheroidal support, palladium, at least one metal, M, selected from the group consisting of gold, cerium, copper and mixtures thereof and at least one metal. A, selected from the group consisting of Group I, Group II, lanthanide and transition metal promoters. | 10-09-2008 |
| 20110077425 | Process for producing allyl acetate - A process for producing allyl acetate is disclosed. The process comprises reacting a feed comprising propylene, acetic acid, oxygen, and carbon dioxide in the presence of a supported palladium catalyst. The feed comprises from 2 to 6 mole percent carbon dioxide, which improves the selectivity to allyl acetate. | 03-31-2011 |
| 20120130119 | Vinyl Acetate Production Process - Disclosed is a method for controlling a vinyl acetate production process. The method comprises reacting ethylene, acetic acid, and an oxygen-containing gas in the presence of a catalyst in a reactor to produce vinyl acetate, measuring the concentration of a component involved in or associated with the reaction and/or any of the subsequent steps by Raman spectroscopic analysis, and adjusting the conditions in the reactor or in any of the subsequent steps in response to the measured concentration of the component to achieve a proper control of the reaction or any of the subsequent steps. | 05-24-2012 |
| 20120310006 | PROCESS FOR PRODUCING ALLYL ACETATE - A process for producing allyl acetate is disclosed. The process comprises reacting a feed comprising propylene, acetic acid, oxygen, and carbon dioxide in the presence of a supported palladium catalyst. The feed comprises from 2 to 6 mole percent carbon dioxide, which improves the selectivity to allyl acetate. | 12-06-2012 |
| 20130172602 | PROCESS FOR PRODUCTION OF ALLYL ACETATE - A process for production of allyl acetate includes steps of reacting acetic acid | 07-04-2013 |
| 560246000 | Preparing polyoxy alcohol esters from olefins | 1 |
| 20090112016 | CONTROLLED CATALYSIS - The present invention provides methods of using a novel sulfonated resin catalyst, showing improved performance. The catalyst has reduced or partial functionalization, throughout the sulfonated region of the polymer, leading to reduced by-product formation and other desirable features. This catalyst has particular usefulness in reactions or processes sensitive to high acidity, e.g., esterification-transesterification. | 04-30-2009 |
| 560247000 | Preparing alkyl esters from olefins | 3 |
| 20120264970 | VINYL ACETATE PRODUCTION PROCESS - A process is disclosed for the production of vinyl acetate where a mixture of ethylene, acetic acid, and oxygen is reacted in the presence of a catalyst to produce a product mixture of vinyl acetate, ethylene, carbon dioxide, acetic acid, water, ethyl acetate, and ethylene glycol diacetate. The product mixture contains both a gaseous phase and a liquid phase, which are separated. The gas phase contains at least carbon dioxide, which is removed via gas stream. The crude vinyl acetate stream is removed via a liquid stream. The crude vinyl acetate is then further separated to isolate a stream containing at the majority of the ethylene glycol diacetate. The ethylene glycol diacetate stream is then methanolyzed in the presence of a methanolyzing catalyst, to recover methyl acetate, which can be optionally recycled as a feed stock to an acetic acid plant. | 10-18-2012 |
| 20140194649 | PROCESS FOR THE ACETOXYLATION OF OLEFINS IN THE GAS PHASE - Yield and selectivity of olefin acetoxylation are improved through the use of successive catalyst zones of different reactivities, the successive zones contained in one or more reaction tubes arranged is parallel. | 07-10-2014 |
| 20140303398 | METHOD FOR PRODUCING VINYL ACETATE - The present invention discloses a method for producing vinyl acetate. Inert gas is introduced into cycling gas to improve the explosion limit of oxygen, enlarge a stable area of a reaction system and improve the oxygen concentration of the reaction system, thus reducing the reaction temperature, prolonging the service life of a catalyst, and improving the selectivity of the vinyl acetate. The inert gas is nitrogen or a mixture of nitrogen and methane. The concentration of the inert gas at the inlet of a reactor is 8 to 30 mol %. The molar concentration of the oxygen at the inlet of the reactor is 10.5 to 12 mol %. | 10-09-2014 |
