| Patent application number | Description | Published |
|---|
| 20080200721 | Mdi Production By Means of Liquid Phase and Gas Phase Phosgenation - The invention relates to a process for preparing isocyanates, which comprises the
| 08-21-2008 |
| 20080200722 | Method For Producing Diisocyanates - The present invention relates to a process for preparing diisocyanates from diamines and phosgene in the gas phase. | 08-21-2008 |
| 20080207954 | Method for Producing Polyoxymethylene Dimethyl Ethers From Methanol and Formaldehyde - A process for preparing tri- and tetraoxymethylene glycol dimethyl ether (POMDME | 08-28-2008 |
| 20080207955 | Method for the Production of Polyoxymethylene Dialkyl Ethers from Trioxan and Dialkylethers - A process for preparing polyoxymethylene dialkyl ethers of the formula | 08-28-2008 |
| 20080216390 | Biodiesel Fuel Mixture Containing Polyoxymethylene Dialkyl Ether - A biodiesel fuel mixture having a cetane number of >40, comprising
| 09-11-2008 |
| 20080221368 | Process for Preparing Polyoxymethylene Dimethyl Ethers from Methanol and Formaldehyde - A process for preparing tri- and tetraoxymethylene glycol dimethyl ether (POMDME | 09-11-2008 |
| 20080233043 | Method For the Production of Chlorine By Means of Gas Phase Oxidation of Hydrogen Chloride - A process for preparing chlorine by gas-phase oxidation of hydrogen chloride by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst, wherein the process is carried out in a reactor ( | 09-25-2008 |
| 20080249332 | Process for the Preparation of Isocyanates - The invention provides a multistage process for continuously preparing organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to low molecular mass monomeric polyurethanes, and thermally cleaving said polyurethanes, in which at defined reaction stages the polyisocyanates prepared and unusable residues are separated off, and reusable by products and intermediates are recycled to upstream stages. | 10-09-2008 |
| 20080255376 | Method For the Production of Dioxolane - Processes comprising: providing a reactive distillation column having an upper region, a middle region and a lower region; feeding ethylene glycol and an aqueous formaldehyde solution into the reactive distillation column in the middle region of the reactive distillation column; reacting the ethylene glycol and the aqueous formaldehyde solution in the reactive distillation column in the presence of a catalyst to form dioxolane; removing a product stream comprising dioxolane in an amount of at least 75% by weight from the upper region of the reactive distillation column; and removing a bottom stream comprising one or more components having boiling points higher than dioxolane from the lower region of the reactive distillation column. | 10-16-2008 |
| 20080262263 | Method For Purifing Residues Containing Isocyanates - The present invention comprises a process for purifying isocyanate-comprising residues. | 10-23-2008 |
| 20080281109 | Integrated Method For the Production of Trioxane From Formaldehyde - The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A | 11-13-2008 |
| 20080283384 | Process for Producing Trioxane and at Least One Comonomer - The invention relates to a process for preparing trioxane and at least one comonomer for preparing (co)polymers based on trioxane, in which, in a first step, formaldehyde the at least one comonomer reactant are reacted in aqueous solution to give trioxane and comonomer, to obtain a reaction mixture A | 11-20-2008 |
| 20090112017 | METHOD FOR PRODUCING POLYISOCYANATES - The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene in the presence of a solvent, wherein ionic liquids are used as solvents. | 04-30-2009 |
| 20090112018 | METHOD FOR PRODUCING POLYISOCYANATES - The invention provides a process for preparing isocyanates by reacting the corresponding amines with phosgene in the presence of solvents, wherein compounds which form salt melts with hydrogen chloride are used as solvents. | 04-30-2009 |
| 20090187033 | INTEGRATED METHOD FOR THE PREPARATION OF TRIOXANE FROM FORMALDEHYDE - An integrated process for preparing trioxane from formaldehyde, comprising the steps of:
| 07-23-2009 |
| 20090221846 | METHOD FOR PRODUCING ISOCYANATES - The present invention relates to a process for preparing isocyanates and an apparatus suitable for this purpose, and also its use. | 09-03-2009 |
| 20090275775 | METHOD FOR PRODUCING ISOCYANATES - The invention relates to a multistage process for the continuous preparation of organic, distillable isocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic amines with urea and alcohols to liberate ammonia and form low molecular weight monomeric urethanes and thermal dissociation of the latter, in which by-products formed are at least partly utilized. | 11-05-2009 |
| 20090281350 | METHOD FOR PRODUCING ISOCYANATES - The invention provides a process for preparing isocyanates by reacting amines with phosgene, wherein the amine or a mixture of amine and a solvent is mixed in the form of an aerosol with gaseous phosgene and the amine is subsequently reacted with phosgene. | 11-12-2009 |
| 20090292100 | PROCESS FOR PREPARING PENTAMETHYLENE 1,5-DIISOCYANATE - The present invention relates to a process for preparing pentamethylene 1,5-diisocyanate, to pentamethylene 1,5-diisocyanate prepared in this way and to the use thereof. | 11-26-2009 |
| 20100041915 | METHOD FOR PRODUCING ISOCYANATES - The present invention relates to a process for preparing diisocyanates from diamines and phosgene in the gas phase. | 02-18-2010 |
| 20100056822 | METHOD FOR PRODUCING ISOCYANATES - The invention relates to a process for preparing isocyanates in the gas phase. | 03-04-2010 |
| 20100076218 | METHOD FOR PRODUCING ISOCYANATES - The invention relates to a process for preparing isocyanates in the gas phase. | 03-25-2010 |
| 20100121081 | METHOD FOR SEPARATING TRIOXANE FROM A TRIOXANE/FORMALDEHYDE/WATER MIXTURE BY MEANS OF PRESSURE CHANGE RECTIFICATION - A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by
| 05-13-2010 |
| 20100130756 | METHOD FOR PRODUCING TRIOXANE FROM TRIOXYMETHYLENE GLYCOL DIMETHYL ETHER - A process for preparing trioxane from trioxymethylene glycol dimethyl ether (POMDME | 05-27-2010 |
| 20100145079 | METHOD FOR PRODUCING CYCLIC FORMALDEHYDE DERIVATIVES FROM POLYOXY DIALKYL ETHERS - A process for preparing trioxane from trioxymethylene glycol dimethyl ether (POMDME | 06-10-2010 |
| 20100152466 | INTEGRATED METHOD FOR PRODUCING TRIOXANE FROM FORMALDEHYDE - The invention relates to an integrated process for preparing trioxane from formaldehyde in which a stream A | 06-17-2010 |
| 20100217035 | PROCESS FOR PREPARING ISOCYANATES - The present invention relates to a process for preparing diisocyanates from diamines and phosgene in the gas phase. | 08-26-2010 |
| 20100227997 | METHOD FOR PREPARING ISOCYANATE ADDUCTS - The present invention provides a process for working up isocyanate adducts, comprising the steps of
| 09-09-2010 |
| 20100270140 | METHOD FOR SEPARATING TIOXANE FROM A TRIOXANE/FORMALDEHYDE/WATER MIXTURE BY MEANS OF PRESSURE CHANGE RECTIFICATION - A process for separating trioxane from a feed stream I comprising formaldehyde, trioxane and water, in which
| 10-28-2010 |
| 20100274046 | METHOD FOR PRODUCING ISOCYANATES - The present invention relates to a multiple-stage process for the continuous preparation of organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic poly-amines with ureas to form low-molecular monomeric polyureas, and the thermal decomposition thereof. | 10-28-2010 |
| 20100280195 | PROCESS FOR PREPARING POLYOXYMETHYLENE HOMOPOLYMERS OR COPOLYMERS BY HOMOPOLYMERIZATION OR COPOLYMERIZATION OF TRIOXANE, STARTING FROM METHANOL - A process for preparing polyoxymethylene homopolymers or copolymers ( | 11-04-2010 |
| 20100317889 | PROCESS FOR PREPARING ISOCYANATES - Process for preparing isocyanates by phosgenation of amines, wherein phosgene and amine are brought into contact in at least 2 mixing chambers connected in parallel. | 12-16-2010 |
| 20100324311 | METHOD FOR THE PRODUCTION OF CRUDE TRIOXANE - A process for preparing crude trioxane ( | 12-23-2010 |
| 20110021836 | METHOD FOR TREATING RESIDUES FROM THE PRODUCTION OF ISOCYANATES - The invention relates to a process for the work-up of residues from the production of isocyanates, which comprises the steps:
| 01-27-2011 |
| 20110124908 | PROCESS FOR PREPARING ISOCYANATES - The invention provides a process for preparing polyisocyanates, comprising the steps of
| 05-26-2011 |
