| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 560211000 | Formation of ethylenic unsaturation | 20 |
| 20120078004 | Acrylic Acid from Lactide and Process - Technical grade acrylic acid derived from renewable resources utilizing a homogeneous nickel catalyst system by a process including reacting lactide with acetic acid to form 2-acetoxypropionic acid in the presence of a homogeneous nickel catalyst, pyrolyzing, with or without a catalyst, the 2-acetoxypropionic acid to acrylic acid and acetic acid, condensing and collecting the pyrolysis products in the presence of polymerization inhibitor(s) and purfying the acrylic acid by distillation in the presence of polymerization inhibitor(s). Acrylic acid and methyl acrylate are produced from methyl 2-acetoxypropionate which comes from fermentation derived lactic acid. The disclosed process will produce a “green” (i.e. renewable resources derived) acrylic acid and methyl acrylate ester. | 03-29-2012 |
| 20130053599 | CATALYSTS FOR PRODUCING ACRYLIC ACIDS AND ACRYLATES - In one embodiment, the invention is to a catalyst composition comprising titanium, phosphorus, and less than 1 wt. % vanadium. The catalyst composition has a molar ratio of phosphorus to titanium of at least 1.0:1.0. | 02-28-2013 |
| 20130158287 | NITRIDED MIXED OXIDE CATALYST SYSTEM AND A PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS - The invention relates to a method of producing an ethylenically unsaturated carboxylic acid or ester, preferably an α, β ethylenically unsaturated carboxylic acid or ester. The method includes contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester in the presence of a catalyst and optionally in the presence of an alcohol. The catalyst comprises a nitrided metal oxide having at least two types of metal cations, M | 06-20-2013 |
| 20130178647 | Mixed Oxide Catalyst and a Process for the Production of Ethylenically Unsaturated Carboxylic Acids or Esters - The invention relates to a catalyst for the reaction of formaldehyde with a carboxylic acid or ester to produce an ethylenically unsaturated carboxylic acid or ester, preferably α, β ethylenically unsaturated carboxylic acids or ester. The catalyst includes a metal oxide having at least two types of metal cations, M | 07-11-2013 |
| 20130245311 | Catalyst for Producing Acrylic Acids and Acrylates - The invention is to a process for producing an acrylate product. The process includes the steps of contacting an alkanoic acid and an alkylenating agent over a catalyst composition under conditions effective to produce the acrylate product. The catalyst composition comprises vanadium, titanium and tungsten. Preferably, the catalyst comprises vanadium to tungsten at a molar ratio of at least 0.02:1, in an active phase. | 09-19-2013 |
| 20130296602 | Conversion of Methyl-2-Acetoxy Propionate to Methyl Acrylate and Acrylic Acid - Disclosed herein is a method that includes contacting (a) a gaseous mixture that includes (i) an inert gas and (ii) a vaporized liquid feed containing methyl-2-acetoxy propionate (MAPA) and an excipient, with (b) a material having a surface acidity of about 5 micromoles per gram (μmol/g) or less and a surface basicity of about 15 μmol/g or less, under conditions sufficient to produce a conversion product that includes methyl acrylate in a molar yield of at least about 85% from MAPA. The excipient is selected from the group consisting of acetic acid, formic acid, methyl acetate, lactic acid, carbon dioxide, and mixtures thereof. This method now makes possible the ability to further process the manufactured methyl acrylate into acrylic acid by either of two general routes that ultimately produce acrylic acid in a molar yield of at least about 80% from methyl acrylate and, preferably, substantially free of propanoic acid. | 11-07-2013 |
| 20140364644 | INTEGRATED PROCESS FOR THE PRODUCTION OF ACRYLIC ACIDS AND ACRYLATES - A process for producing a crude product stream including an acrylate product and an alkylenating agent and separating at least a portion of the crude product stream to form alkylenating agent and intermediate product streams. The alkylenating agent stream comprises at least 1 wt % alkylenating agent and the intermediate product stream comprises acrylate products in high concentration. The crude product stream is formed by contacting acetic acid and formaldehyde in the presence of at least one aldol condensation catalyst under conditions effective to form the stream. Catalysts which are particularly useful are multielement oxide active materials of the general formula | 12-11-2014 |
| 20140364645 | PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS AND A CATALYST THEREFOR - A method of producing an ethylenically unsaturated, typically, an α, β ethylenically unsaturated carboxylic acid or ester is described. The method comprises the steps of contacting formaldehyde, or a source of formaldehyde, with a carboxylic acid or ester in the presence of a catalyst and optionally in the presence of an alcohol. The catalyst comprises barium phosphate leaf or plate shaped/like crystals, or a source thereof. A catalyst system is also described. The catalyst system comprises a crystalline barium phosphate catalyst and optionally a catalyst support. | 12-11-2014 |
| 20160083323 | IMPROVED ACRYLIC ACID AND ACRYLATE ESTER FROM LACTIDE PROCESS - Technical grade acrylic acid derived from renewable resources utilizing a base catalyst system by a process including reacting lactide (or lactic acid oligomers) with methyl acetate to form mist methyl 2-acetoxypropionate in the presence of a base catalyst such as sodium methoxide, pyrolyzing the methyl 2-acetoxypropionate, with or without a catalyst, to methyl acrylate and acetic acid, transesterifying the mixture to acrylic acid and methyl acetate, separating and purifying the acrylic acid by distillation late in the presence of polymerization inhibitor(s). The disclosed process will produce a “green” (i.e. renewable resources derived) acrylic acid and/or methyl acrylate ester. | 03-24-2016 |
| 560212000 | By dehydration or dealcoholization | 6 |
| 20090076297 | Process for converting a hydroxycarboxylic acid, or salts thereof, to an unsaturated carboxylic acid and/or its esters - A process for converting a salt of a hydroxycarboxylic acid to an unsaturated carboxylic acid, or esters thereof. The process involves converting an ammonium salt of a hydroxycarboxylic acid in aqueous solution to a corresponding hydroxycarboxylic acid and ammonium cation in aqueous solution; and separating the ammonium cation from the aqueous solution, leaving the hydroxycarboxylic acid in aqueous solution. The converting and separating steps may be accomplished by employing a hydrophobic acid or an acid ion exchange resin, each of which must have an acid dissociation constant, i.e., pK | 03-19-2009 |
| 20100113822 | Preparation of acrylic acid derivatives from alpha- or beta-hydroxy carboxylic acids - The invention is directed to a process for the preparation of α,β-unsaturated acids, esters and amides from α- or β-hydroxycarboxylic acids or esters or precursors in high yields and high selectivity. The α,β-unsaturated acids or esters are optionally prepared in the presence of specific dehydration and/or esterification catalysts. The α,β-unsaturated amides or substituted amides are prepared optionally in the presence of a dehydration and/or amidation catalyst. The source of α- or β-hydroxycarboxylic acids or precusor is preferably from a renewable resource. The precursor is defined herein. | 05-06-2010 |
| 20150038735 | PREPARATION OF ALPHA, BETA-UNSATURATED CARBOXYLIC ACIDS AND ESTERS THEREOF - An L-type zeolite, a modified L-type zeolite, or any combination thereof may be useful in catalytically preparing α,β-unsaturated carboxylic acids and/or esters thereof through reaction pathways that include dehydroxylation reactions and optionally esterification reactions. In some reaction pathways, dehydroxylation reactions and esterification reactions may be performed sequentially or concurrently. | 02-05-2015 |
| 20150141694 | PROCESS FOR PRODUCTION OF METHACRYLIC ACID ESTERS - A method for producing α-, β-unsaturated carboxylic acid esters in high yield from reaction by-product streams via the catalytic conversion of the by-products to additional α-, β-unsaturated carboxylic acid ester product. The catalyst comprises cesium, and phosphorous as a promoter, on a porous support. | 05-21-2015 |
| 20150368178 | PROCESS FOR THE MANUFACTURE OF ALKYLFLUOROACRYLATE - The invention relates to a process for the manufacture of an alkylfluoroacrylate starting from alkylfluoroacetate and an oxalic acid ester, wherein an alkane liquid under the reaction conditions is applied as the solvent in one of the reaction steps. | 12-24-2015 |
| 20160102043 | PROCESS FOR PRODUCTION OF METHACRYLIC ACID ESTERS - A method for producing α-, β-unsaturated carboxylic acid esters in high yield from acetone cyanohydrin and sulfuric acid through the separation and concurrent catalytic conversion of reaction side products to additional α-, β-unsaturated carboxylic acid ester product. The catalyst comprises at least one Group IA element, and boron as a promoter, on a porous support. | 04-14-2016 |
| 560213000 | By dehalogenation or dehydrohalogenation | 2 |
| 20120059187 | Process for Preparation of 2-Fluoroacrylic Esters - According to the present invention, there is provided a production process of a 2-fluoroacrylic ester including: a bromination step of converting a 2-fluoropropionic ester to a 2-bromo-2-fluoropropionic ester by reaction of the 2-fluoropropionic ester with a nitrogen-bromine bond-containing brominating agent in the presence of a radical initiator; and a dehydrobromination step of reacting the 2-bromo-2-fluoropropionic ester with a base. It is not necessary in this process to adopt very-low-temperature conditions and to use a stoichiometric amount of expensive reagent. The target 2-fluoroacrylic ester can be thus produced at low cost. | 03-08-2012 |
| 20120283468 | Preparation of substituted 2-fluoroacrylic acid derivatives - The present invention relates to a process for the preparation of substituted 2-fluoroacrylic acid derivatives. | 11-08-2012 |
| 560214000 | By dehydrogenation | 3 |
| 20130245312 | Catalyst for Producing Acrylic Acids and Acrylates - The invention is to a process for producing an acrylate product. The process includes the steps of contacting an alkanoic acid and an alkylenating agent over a catalyst composition under conditions effective to produce the acrylate product. The catalyst composition comprises vanadium, bismuth and titanium. Preferably, the catalyst comprises 0.3 wt % to 30 wt % vanadium, 0.1 wt % to 69 wt % bismuth and 0.1 wt % to 61 wt % tungsten, in an active phase. | 09-19-2013 |
| 20150299093 | METHOD FOR PRODUCING 2-OCTYL ACRYLATE BY DIRECT ESTERIFICATION - The invention relates to a process for continuously producing 2-octyl acrylate by reacting acrylic acid and 2-octanol in the presence of a sulfonic acid esterification catalyst and at least one polymerization inhibitor. The water formed by the esterification reaction is entrained by distillation in a column surmounting the reactor in the form of a heteroazeotropic mixture with the 2-octanol which is then subjected, after condensation, to separation in a decanter so as to give an upper organic phase and a lower aqueous phase. The reaction mixture containing the reaction product and residual by-products are purified by separation means in order to obtain: (1) pure 2-octyl acrylate and (2) unreacted 2-octanol and acrylic acid compounds that will be recycled along with the catalyst. | 10-22-2015 |
| 20160176798 | SEPARATION OF PROPIONIC ACID FROM ACRYLIC ACID | 06-23-2016 |
