| Patents for C07C 68 - Preparation of esters of carbonic or haloformic acids (3,588) |
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| 10/07/2004 | WO2004085375A1 Process for the preparation of propylene glycol |
| 10/07/2004 | WO2004060987A3 Catalytic depolymerization of polymers containing electrophilic linkages using nucleophilic reagents |
| 10/07/2004 | DE10313680A1 Production of dialkyl dicarbonates comprises reacting alkali metal alkyl carbonates with tosyl chloride or benzenesulfonyl chloride in the presence of pyridine and a phase transfer catalyst under defined conditions |
| 10/05/2004 | US6800779 Heating, pressurization of phenol compound with carbon monoxide in presence of catalyst |
| 09/30/2004 | US20040192953 Using an activated aromatic hydroxy compound in presenc eof catalyst |
| 09/29/2004 | EP1461312A1 Method for producing quaternary salt phenolate solutions and for regenerating and recycling quaternary salt phenolate solutions from reaction mixtures |
| 09/29/2004 | EP1461154A1 Method for separating reaction mixtures and recycling of quaternary salts and bases |
| 09/29/2004 | EP1461153A1 Method for separating reaction mixtures and recycling quaternary salts |
| 09/29/2004 | CN1168537C Preparation of organic/inorganic nano mesoporous hybridization catalyst utilized for synthesizing methyl carbonate as well as its application |
| 09/22/2004 | EP1460056A1 Process for producing carbonic ester |
| 09/22/2004 | EP1460055A1 Process for preparing diaryl carbonates where the catalyst is thermically activated in a separated aparatus |
| 09/22/2004 | EP1115690B1 Process for the isolation and removal of unwanted water from a chemical reaction |
| 09/22/2004 | CN1167507C Catalyst of synthetical methyl carbonate, its preparing method and use |
| 09/16/2004 | DE10309954A1 Production of aromatic carbonate comprises reaction of aromatic hydroxyl compound with carbon monoxide and oxygen in presence of catalyst system with preheating of at least portion of reaction mixture prior to reaction |
| 09/15/2004 | CN1528735A Method for joint production of dialkyl carbonate and diatomic alcohol |
| 09/08/2004 | CN1526694A Process for producing diaryl ester carbonate |
| 09/08/2004 | CN1526693A Direct synthesis process of methyl carbonate |
| 09/08/2004 | CN1526476A Catalyst for direct synthesis of methyl carbonate and its prepn |
| 09/01/2004 | EP1181265B1 Process for co-production of dialkyl carbonate and alkanediol |
| 09/01/2004 | CN1164561C Method for preparing methyl ethyl carbonate |
| 08/31/2004 | US6784277 Method for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates |
| 08/26/2004 | WO2004072014A1 Method for purifying chloromethyl chloroformate |
| 08/25/2004 | CN1523005A Reaction rectification process for interesterification synthesis of carbonic acid diaryl ester |
| 08/25/2004 | CN1163537C Process for producing polycarbonate |
| 08/25/2004 | CN1163303C Process and catalyst for making dialkyl carbonates |
| 08/18/2004 | EP1220851B1 Carbon dioxide-philic compounds and methods of synthesis thereof |
| 08/18/2004 | EP1220837B1 Process for preparing peroxides using mixed anhydrides |
| 08/18/2004 | CN1522270A Process for producing aliphatic oligocarbonate diols |
| 08/18/2004 | CN1521159A Method for separation purification of diaryl carbonate from transesterification reaction solution |
| 08/11/2004 | EP1444192A1 Method for the catalytic conversion of organic carbonate using a lanthanum catalyst |
| 08/11/2004 | EP1444183A1 Method for the catalytic conversion of alkylene carbonate with a mg, al mixed (hydr) oxide catalyst |
| 08/11/2004 | CN1161320C Method for preparing diaryl carbonates with improved selectivity |
| 08/10/2004 | US6774256 Low corrosive integrated process for preparing dialkyl carbonates |
| 08/05/2004 | US20040152927 From propylene oxide and carbon dioxide; using phosphorus catalyst; forming propylene carbonate as chemical intermediate |
| 08/05/2004 | US20040152911 Heating mixture containing methyl chloroformate in presensce of nucleophilic catalyst; gas chromatography |
| 08/05/2004 | US20040151640 Reactor for gas/ liquid or gas/ liquid/solid reactions |
| 07/29/2004 | US20040146451 Placing diamond into pressure-transmitting medium; consolidation into a pill; upgrading discolored diamonds; retention of optical clarity |
| 07/28/2004 | EP1237843B1 Process for co-production of dialkyl carbonate and alkanediol |
| 07/27/2004 | US6768020 Method for the catalytic conversion of organic carbonate and the use of a lanthanum catalyst therefor |
| 07/27/2004 | US6767517 Reacting a dialkyl carbonate and an aromatic alcohol |
| 07/22/2004 | WO2004060987A2 Catalytic depolymerization of polymers containing electrophilic linkages using nucleophilic reagents |
| 07/21/2004 | EP1439158A1 Method of depolymerizing aromatic polycarbonate |
| 07/14/2004 | CN1157360C Preparation of diaryl carbonate |
| 07/08/2004 | WO2004056793A1 Process for the preparation of propanediol |
| 07/07/2004 | EP1434754A1 Co-production of dialkyl carbonates and diols with treatment of hydroxy alkyl carbonate |
| 07/06/2004 | CA2067433C Preparation of urethane and carbonate products |
| 07/01/2004 | US20040127744 Catalytic depolymerization of polymers containing electrophilic linkages using nucleophilic reagents |
| 07/01/2004 | US20040127736 comprises catalyst system components within mother liquor and an aromatic hydroxy-containing solvent (phenol); cooling; nucleation |
| 07/01/2004 | US20040127720 comprises heterocyclic carbenes; recycling polester/polyamide wastes; by-product inhibition |
| 06/22/2004 | US6753288 Reacting a hydroxyaromatic with oxygen and carbon monoxide in the presence of a group 8, 9, or 10 metal with an atomic number of >/= 44 or a compound thereof, a bromide or chloride salt and organolead to produce a diaryl carbonate |
| 06/16/2004 | EP1427693A1 Method for producing diarylcarbonates |
| 06/16/2004 | EP1427526A1 Modified alumina catalyst |
| 06/16/2004 | EP1427524A1 Isolation of trifluoroethanol |
| 06/16/2004 | EP1427501A1 Method for isolating acid |
| 06/16/2004 | CN1505540A Reactor for gas/liquid or gas/liquid/solid reactions |
| 06/09/2004 | EP1425259A1 Separation of impurities and/or valuable products from solutions containing diarylcarbonate, by means of solution crystallisation |
| 06/09/2004 | CN1152851C Method and apparatus for synthesizing dimethyl carbonate |
| 06/03/2004 | US20040104170 Use of membranes to separate organic liquids having different polarities |
| 06/02/2004 | CN1152004C Process for preparing propenyl carbonate or ethylene carbonate and reactor thereof |
| 05/26/2004 | EP1154980B1 Method for producing symmetrical and asymmetrical carbonates |
| 05/26/2004 | EP1140777B1 Method for the preparation of carbonates by a continuous process |
| 05/26/2004 | CN1151145C Double-function catalyst for synthesizing cyclic carbonate and methyl carbonate |
| 05/26/2004 | CN1151118C Catalyst of synthetic propylene and application thereof |
| 05/25/2004 | US6740781 Process for separating reaction mixtures and recycling quaternary salts and bases |
| 05/25/2004 | US6740768 Method for producing symmetrical and asymmetrical carbonates |
| 05/25/2004 | US6740729 Process for producing polycarbonate |
| 05/25/2004 | CA2294114C Process for the preparation of aromatic carbonates |
| 05/19/2004 | EP1419133A1 Method for the production of dialkyl carbonates |
| 05/19/2004 | EP1419132A1 Method for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates |
| 05/19/2004 | EP1419131A1 Method and apparatus for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates |
| 05/19/2004 | EP1419130A1 Method for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates |
| 05/19/2004 | EP1242358B1 Catalyst composition and method for producing diaryl carbonates, using bisphosphines |
| 05/19/2004 | CN1150158C Process for continuously preparing diethyl carbonate |
| 05/19/2004 | CN1150156C Method for processing reaction mixtures contg. diaryl carbonate |
| 05/13/2004 | US20040090967 Method and apparatus for hardware forwarding of LAN frames over ATM networks |
| 05/12/2004 | CN1149187C Reclamation of metal catalysts used in production of diaryl carbonates |
| 05/11/2004 | US6734325 Separation of quaternary ammonium compound; phase transfer catalyst |
| 05/11/2004 | US6734319 Separation of impurities and/or valuable substances from solutions containing diaryl carbonate by solution crystallization |
| 05/06/2004 | EP1414780A1 Interfacial method of preparing ester-substituted diaryl carbonates |
| 05/06/2004 | EP1414779A1 Solventless preparation of ester-substituted diaryl carbonates |
| 04/29/2004 | US20040082793 Methods of ortho alkylation |
| 04/29/2004 | DE10197050T5 Verfahren zur Herstellung von Diarylcarbonaten A process for the preparation of diaryl carbonates |
| 04/28/2004 | EP1412062A2 Use of membranes to separate organic liquids having different polarities |
| 04/28/2004 | EP1165484B1 Method and apparatus for preparing monofunctional aromatic haloformates |
| 04/27/2004 | US6727393 Of quaternary salt deprotonated hydroxy aromatic acid; reactive extraction in hydroxide; circulation |
| 04/27/2004 | US6726354 Device for mixing and reacting multiphase gaseous and liquid mixtures and use of this device |
| 04/27/2004 | CA2077196C Process for the continuous preparation of dialkyl carbonates |
| 04/22/2004 | DE10196977T5 Verfahren und Katalysatorsystem zur Herstellung von aromatischen Carbonaten The method and catalyst system for producing aromatic carbonates |
| 04/14/2004 | CN1145605C Recovery of hydroxyaromatic compound from aqueous extract solution |
| 04/14/2004 | CN1145600C Process for continuous production of dialkyl carbonate and diol |
| 04/13/2004 | US6720443 Catalyst and process for the preparation of aromatic carbonates |
| 04/07/2004 | EP1404740A2 Method for the production of aliphatic oligocarbonate diols |
| 04/07/2004 | EP1292630B1 Method for producing aliphatic oligocarbonate diols |
| 04/07/2004 | EP1115691B1 Process for continuous production of carbonate esters |
| 03/31/2004 | EP1401798A1 Integrated process for preparing dialkyl carbonates with a circulating catalyst |
| 03/31/2004 | CN1485313A Method for preparing methyl carbonate by directly esterfying ethylene oxide |
| 03/31/2004 | CN1485312A Method for preparing methyl carbonate by directly esterfying propylene oxide |
| 03/25/2004 | US20040059083 Low corrosive integrated process for preparing dialkyl carbonates |
| 03/23/2004 | US6710153 Method for producing phosphonium phenolates |
| 03/18/2004 | US20040054238 Using water, alcohols, phenol |