| Patents for C07C 68 - Preparation of esters of carbonic or haloformic acids (3,588) |
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| 07/10/2003 | WO2003055840A1 Process for producing carbonic ester |
| 07/10/2003 | WO2003055603A1 Method for separating reaction mixtures and recycling of quaternary salts and bases |
| 07/10/2003 | WO2003055602A1 Method for separating reaction mixtures and recycling quaternary salts |
| 07/09/2003 | EP0987285B1 Process for the preparation of aromatic polycarbonate |
| 07/09/2003 | CN1428329A Method for synthesizing dimethyl carbonate by using urea and methanol and adopting heterogeneous catalyst |
| 07/09/2003 | CN1113852C Preparation of dialkyl carbonate |
| 07/02/2003 | CN1427814A Method and catalyst system for producing aromatic carbonates |
| 07/02/2003 | CN1112966C Supported catalyst containing platinum group metal and process for producing diarylcarbonates |
| 07/02/2003 | CN1112965C Process for producing catalyst containing platinum group metal and diarylcarbonates by sol-gel method |
| 06/26/2003 | US20030120103 Process for preparation of fluoroformates |
| 06/25/2003 | EP1321451A1 Process for the preparation of fluoroformates |
| 06/25/2003 | CN1426428A Polymerizable composition of allyl functional monomers |
| 06/25/2003 | CN1426389A Method and catalyst system for producing aromatic carbonates |
| 06/18/2003 | EP1140775B1 Reclamation of metal catalysts used in the production of diaryl carbonates |
| 06/18/2003 | CN1424998A Process for preparing alkoxylated dialkyl carbonate compounds |
| 06/18/2003 | CN1424301A Gas phase synthetic magnesium dimethyl ester catalyst and preparation thereof |
| 06/18/2003 | CN1424147A Catalyst for synthesizing propylene |
| 06/18/2003 | CN1424141A Catalyst of synthetic propylene and application thereof |
| 06/17/2003 | US6579986 Preparation of quinoline-substituted carbonate and carbamate derivatives |
| 06/17/2003 | CA2073708C Process for the preparation of dialkyl carbonates |
| 06/12/2003 | US20030109738 Separation of impurities and/or valuable substances from solutions containing diaryl carbonate by solution crystallization |
| 06/11/2003 | CN1111152C Process for preparation of aromatic carbonates |
| 06/10/2003 | US6576739 Conversion of the hindered bisphenol to the corresponding bischloroformate and subsequent treatment with an amine catalyst and an aqueous base to effect polymerization by hydrolysis and condenstation of bischloroformate groups |
| 06/05/2003 | US20030105366 Method for the catalytic conversion of alkylene carbonate |
| 06/05/2003 | US20030105346 Catalyst and process for the preparation of aromatic carbonates |
| 06/04/2003 | CN1422242A Method of separating and recovering aromatic carbonate and production process |
| 06/04/2003 | CN1421431A Synthesis process of propylene carbonate or vinyl carbonate |
| 06/04/2003 | CN1421430A Urea alcoholizing process of synthesizing dimethyl carbonate |
| 06/03/2003 | US6573396 Co-production of dialkyl carbonates and diols with treatment of hydroxy alkyl carbonate |
| 05/28/2003 | CN1420112A Process for low-temp. Synthesis of dimethyl carbonate |
| 05/22/2003 | WO2003042152A1 Method for the catalytic conversion of organic carbonate using a lanthanum catalyst |
| 05/22/2003 | WO2003042141A1 Method for the catalytic conversion of alkylene carbonate with a mg, al mixed (hydr) oxide catalyst |
| 05/22/2003 | US20030097016 Organic carbonate is contacted with alcohol or water or their mixture of, in the presence of a catalyst comprising at least about 7 wt. % of lanthanum supported on a support |
| 05/21/2003 | EP1165218B1 Device for mixing and reacting multiphase gaseous and liquid mixtures and use of this device |
| 05/20/2003 | US6566299 For economically producing aromatic carbonates from aromatic hydroxy compounds |
| 05/20/2003 | US6566295 Method and catalyst system for producing aromatic carbonates |
| 05/15/2003 | US20030092872 From mixture of methanol, oxygen and carbon monoxide using copper chloride catalyst |
| 05/14/2003 | EP1016648B1 Process for the preparation of aromatic carbonates |
| 05/14/2003 | CN1416953A Double-function catalyst for synthesizing cyclic carbonate and methyl carbonate |
| 05/14/2003 | CN1416949A Metal oxide catalyst for synthesizing methyl carbonate by urea process and its prepn |
| 05/07/2003 | CN1415595A Method for preparing diglycol double carbonyl diallyls |
| 05/01/2003 | WO2003035592A1 Method of depolymerizing aromatic polycarbonate |
| 04/29/2003 | US6555713 Using hydrocarbon compound such as hexane, cyclohexane, 1-hexene or toluene and/or a chain ether compound such as diisopropyl ether or t-butyl methyl ether as decomposition inhibitor |
| 04/24/2003 | WO2003033450A1 Co-production of dialkyl carbonates and diols with treatment of hydroxy alkyl carbonate |
| 04/24/2003 | WO2003033449A1 Mono carbonylation of benzene diols |
| 04/24/2003 | US20030078449 Continuous process using an aqueous caustic solution, a carbonyl chloride, a monofunctional hydroxyaromatic compound and a solvent; by-products inhibition; endcapping polycarbonates; chainstopping for molecular weight control |
| 04/24/2003 | US20030078448 Reacting a cyclic carbonate and aliphatic monohydric alcohol in the presence of a transesterification catalyst; separating the hydroxy alkyl carbonate by-product under mild conditions; improved yields and product purity |
| 04/24/2003 | US20030078443 Preparing a polyalkylene oxide porogen by employing hydrosiylation or nucleophilic substitution or esterification or hydrogenolysis or carbonation |
| 04/23/2003 | EP1303476A1 Method and catalyst system for producing aromatic carbonates |
| 04/16/2003 | CN1411434A Process for aromatic carbonate |
| 04/16/2003 | CN1411428A Method for producing phosphonium phenolates |
| 04/15/2003 | US6548691 Process for producing carbonic acid diaryl ester |
| 04/15/2003 | US6548445 Supported catalysts containing a platinum metal and process for preparing diaryl carbonates |
| 04/09/2003 | EP1299341A2 A method for manufacturing dialkyl carbonate |
| 03/27/2003 | WO2003024591A1 Modified alumina catalyst |
| 03/27/2003 | US20030060650 Reacting an alkanol, oxygen, carbon monoxide, and a catalyst to form a mixture comprising a dialkyl carbonate, an alkyl chloroformate, hydrochloric acid, water, carbon dioxide, and carbon monoxide; passing mixture through a fluid passageway |
| 03/27/2003 | US20030060649 Solventless preparation of ester-substituted diaryl carbonates |
| 03/27/2003 | CA2459546A1 Modified alumina catalyst |
| 03/20/2003 | WO2003002630A3 Method for the production of aliphatic oligocarbonate diols |
| 03/20/2003 | US20030055199 Reacting an alkanol, oxygen, carbon monoxide, and a catalyst to form a mixture comprising a dialkyl carbonate, an alkyl chloroformate, hydrochloric acid, water, carbon dioxide, and carbon monoxide; removing alkyl chloroformate |
| 03/19/2003 | EP1292630A1 Method for producing aliphatic oligocarbonate diols |
| 03/18/2003 | US6534670 Catalyst and process for the preparation of aromatic carbonates |
| 03/18/2003 | US6534432 Catalyst compositions for producing aromatic carbonates |
| 03/13/2003 | WO2003020419A1 Isolation of trifluoroethanol |
| 03/13/2003 | WO2003020392A1 Method for isolating acid |
| 03/13/2003 | US20030050496 Process for the preparation of diaryl carbonates |
| 03/11/2003 | US6531623 Phosgene and phenol reaction mixture maintained constriction at velocity of 3-15 m/s and 2-10 m/s and expose the mixture to a pressure drop of .1-2 and 2-10 m/s in first and second steps respectively |
| 03/06/2003 | WO2003018528A1 Separation of impurities and/or valuable products from solutions containing diarylcarbonate, by means of solution crystallisation |
| 03/06/2003 | WO2003018527A1 Method for the production of dialkyl carbonates |
| 03/06/2003 | WO2003018526A1 Method for producing diarylcarbonates |
| 03/06/2003 | US20030045739 Catalyzing the reactions of carbonation, cyclization, decyclization, transesterification; preparing the intermediates for making polycarbonates |
| 03/06/2003 | US20030044340 Separation mixture containing slvent and etching impurities |
| 03/05/2003 | EP1286948A2 Catalyst composition and method for producing diaryl carbonates, using bisphosphines |
| 03/05/2003 | CN1400204A Production process of diaryl carbonate |
| 02/27/2003 | WO2003016258A1 Method for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates |
| 02/27/2003 | WO2003016257A1 Method and apparatus for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates |
| 02/27/2003 | WO2003016256A1 Method for preparing a dialkyl carbonate, and its use in the preparation of diaryl carbonates and polycarbonates |
| 02/27/2003 | US20030040428 Using carbonylation catalyst |
| 02/26/2003 | CN1102076C Method for producing diester carbonate |
| 02/20/2003 | US20030036663 Process for producing diaryl carbonates |
| 02/19/2003 | CN1398247A Colchinol derivatives as vascular damaging agents |
| 02/18/2003 | US6521777 Process for the production of diaryl carbonates |
| 02/13/2003 | WO2002048087A3 Process for the production of diaryl carbonates |
| 02/13/2003 | US20030032831 Reacting aromatic monohydroxy compound with carbon monoxide and oxygen in presence of palladium, redox catalyst, heteropoly acid, and quaternary ammonium or phosphonium salt; carbonation, dehydration |
| 02/13/2003 | US20030032830 Oxidative carbonylation of hydroxyaromatic compounds |
| 02/13/2003 | US20030032547 Catalyst comprised of a Group 8, 9, or 10 metal source, a group 4 metal source, and a Group 11 cocatalyst source previously used in a carbonylation reaction involving an aromatic hydroxy compound, carbon monoxide and oxygen |
| 02/06/2003 | WO2003010123A1 Solventless preparation of ester-substituted diaryl carbonates |
| 02/06/2003 | WO2003010122A1 Interfacial method of preparing ester-substituted diaryl carbonates |
| 02/06/2003 | WO2002057213A3 Process for the production of diaryl carbonates |
| 02/06/2003 | US20030028044 Use of membranes to separate organic liquids having different polarities |
| 02/06/2003 | US20030028043 Process for purifying diaryl carbonates |
| 02/06/2003 | US20030027709 Adding protic acid forming a biphasic second liquid reaction mixture; mixing, separation; evaporation |
| 02/05/2003 | CN1394848A Technological process for synthesizing diaryl carbonate by using ester exchange method |
| 02/05/2003 | CN1394847A Method for preparing methyl ethyl carbonate |
| 02/05/2003 | CN1394679A Compound metal oxide catalyst for synthesizing diphenyl carbonate by using ester exchange method and its preparation method |
| 02/05/2003 | CN1394678A Catalyst for synthesizing dimethyl carbonate and its preparation method |
| 02/04/2003 | US6515145 Process for the production of carbonates that melt at a high temperature |
| 02/04/2003 | US6514900 Catalyst system for producing aromatic carbonates |
| 01/30/2003 | WO2002048088B1 Process for the production of diaryl carbonates |
| 01/30/2003 | US20030023109 Low corrosive integrated process for preparing dialkyl carbonates |