| Patents for C07C 68 - Preparation of esters of carbonic or haloformic acids (3,588) |
|---|
| 02/09/2000 | CN1049212C Improved synthetic method of dialkyl carbonate |
| 02/03/2000 | WO2000005228A1 Process for decolorizing organic carbonates |
| 02/01/2000 | US6020514 Process for producing di-tert-butyl dicarbonate |
| 01/26/2000 | EP0773920B1 2-(2,4,6-trimethyl phenyl)cyclopentane-1,3-dione derivatives |
| 01/26/2000 | CN1242356A Method for producing dimethyl carbonate by direct synthesizing carbon dioxide and methanol |
| 01/04/2000 | US6010976 Catalyst for making dialkyl carbonates |
| 12/28/1999 | US6008399 Reacting dialkoxymethyl with oxygen containing compound in presence of a catalyst to form dialkyl carbonate |
| 12/22/1999 | EP0965577A1 Process for separation between dialkyl carbonate and alkyl carbamate |
| 12/16/1999 | WO1999064382A1 Process for continuous production of dialkyl carbonate and diol |
| 12/14/1999 | US6001768 Contain a platinum metal, a platinum metal compound or a complex containing a platinum metal compound on a support comprising a metal oxide whose metal can occur in a plurality of oxidation states |
| 12/01/1999 | EP0960092A1 Method for the preparation of alpha-chlorinated chloroformates |
| 11/17/1999 | CN1235141A Process for preparing organic compound |
| 11/16/1999 | US5986125 Process for the production of dialkyl carbonates |
| 11/09/1999 | US5981788 Extraction with an aqueous complexing solution for palladium, extraction with an aqueous non-basic and preferably ionic extractant for cobalt, and extraction with water to remove bromide source |
| 11/09/1999 | US5980445 Process for producing diaryl carbonate |
| 10/26/1999 | US5973184 Process for preparing a dialkyl carbonate by gas-phase decarbonylation of dialkyl oxalate |
| 10/26/1999 | US5973183 Phosphine ligand promoted synthesis of tetraaryloxyalkane |
| 10/26/1999 | US5972525 Solid particle containing active carbon, support and catalyst |
| 10/21/1999 | WO1999052853A1 Method for the production of dibenzyl carbonates |
| 10/21/1999 | DE19816497A1 Verfahren zur Herstellung von Dibenzylcarbonaten Process for the preparation of dibenzyl |
| 10/20/1999 | EP0950649A1 A process for preparing oxyalkylene derivatives in the presence of phosphine oxides |
| 10/12/1999 | US5965472 Recovery of catalyst systems from diaryl carbonate-containing reaction solutions by suspension crystallization |
| 10/05/1999 | US5962720 Reacting two symmetric dialkyl carbonates in presence of a nucleophilic reagent and catalyst |
| 10/05/1999 | US5962699 Process for decolorizing organic carbonates |
| 09/15/1999 | CN1228358A Catalyst for synthetising dimethyl carbonate from methanol and propylidene carbonate |
| 09/08/1999 | CN1227839A Process for low-pressure synthesis of dimethyl carbonate by carbon monoxide |
| 09/01/1999 | CN1227218A Method for preparing diaryl carbonates with improved selectivity |
| 08/17/1999 | US5939563 Fungicides |
| 08/05/1999 | WO1999038837A1 Improved method for making mixed high purity (meth)acrylic anhydrides |
| 07/14/1999 | CN1222504A Process for producing di-tert-butyl dicarbonate |
| 07/07/1999 | CN1221732A Preparation of dialkyl carbonate |
| 06/29/1999 | US5917078 Process for the isolation and removal of unwanted water from a chemical reaction |
| 06/29/1999 | US5917077 Method for preparing diaryl carbonates with improved selectivity |
| 06/24/1999 | WO1999018625A3 ESTER AS A SOLVENT IN ELECTROLYTE SYSTEMS FOR Li ION ACCUMULATORS |
| 06/22/1999 | US5914428 Reacting dimethyl carbonate with an aliphatic diamine in presence of an alkali metal or compound as carbamylation catalyst to form carbamate, thermally decomposing the product in high boiling solvent to produce aliphatic diisocyanate |
| 06/15/1999 | CA2041646C Process for continuously producing an aromatic carbonate |
| 06/02/1999 | CN1218031A Process for separating dimethyl carbonate by water extraction rectification |
| 06/01/1999 | US5908952 Hexaalkylguanidinium chloride or bromide and a group viiib metal salt of at least one aliphatic beta-diketone. |
| 05/25/1999 | US5907051 Catalyst and method for producing carbonic diesters |
| 05/19/1999 | EP0916645A1 Preparation of dialkyl carbonate |
| 05/19/1999 | CN1216718A Method for recovering and recycling catalyst constituents |
| 05/14/1999 | WO1999008786A8 Supported catalysts containing a platinum group metal and method for producing diarylcarbonates |
| 05/12/1999 | EP0915078A1 Process for producing di-tert-butyl dicarbonate |
| 05/11/1999 | US5902894 Process for making dialkyl carbonates |
| 05/06/1999 | EP0913197A1 Method for recovering and recycling catalyst constituents |
| 05/04/1999 | US5900501 Process for the continuous production of aryl carbonates |
| 04/27/1999 | US5898080 Method for preparing diaryl carbonates employing hexaalkylguanidinium halides |
| 04/27/1999 | US5898079 Method for preparing diaryl carbonates employing hexaalkylguanidinium halides |
| 04/27/1999 | US5896643 Method of working press die |
| 04/15/1999 | WO1999018625A2 ESTER AS A SOLVENT IN ELECTROLYTE SYSTEMS FOR Li ION ACCUMULATORS |
| 04/06/1999 | US5892091 Catalyst for decarbonylation reaction |
| 04/06/1999 | US5892089 From diaryl oxalate in liquid phase by decarbonylation using organic phoshorus compound catalyst |
| 03/31/1999 | CN1212252A Catalyst recovery method in synthetic process of dimethyl carbonate |
| 03/25/1999 | WO1999014183A1 Process for the preparation of aromatic carbonates |
| 03/24/1999 | CN1211564A Method for preparing diaryl carbonates employing hexaalkylguanidinium halides |
| 03/23/1999 | US5885917 For preparing dimethyl carbonate by reaction of carbon monoxide and methyl nitrite |
| 03/17/1999 | CN1210850A Process for separating dimethyl carbonate azeotrope system using regular tower |
| 03/11/1999 | WO1999011597A1 Phosgenation under pressure of alcohol's for producing chloroformates |
| 03/04/1999 | DE19737329A1 Production of aliphatic chloroformate esters for synthesis |
| 02/25/1999 | WO1999008787A1 Catalysts containing a platinum group metal and produced in a sol-gel method, as well as method for producing diarylcarbonates |
| 02/25/1999 | WO1999008786A1 Supported catalysts containing a platinum group metal and method for producing diarylcarbonates |
| 02/23/1999 | US5874789 Circuit for integrating a local switch and a remote-control switch |
| 02/23/1999 | US5874605 Process for preparing aromatic carbonic ester |
| 02/16/1999 | US5872275 Process for the producing of aromatic carbonate |
| 02/11/1999 | WO1999006142A1 Catalyst and process for the preparation of aromatic carbonates |
| 02/11/1999 | CA2298654A1 Catalyst and process for the preparation of aromatic carbonates |
| 02/09/1999 | US5869729 Catalytically reacting, in the gas phase, carbon monoxide with a nitrous acid ester in the presence of a chlorine-containing substance; cool-condensing |
| 01/27/1999 | EP0893428A1 A process for preparing dialkyl carbonates |
| 01/27/1999 | CN1041837C Process for preparation of water-soluble and biodegradable products |
| 01/13/1999 | CN1204645A Method for improving separation purity of dimethyl carbonate |
| 01/13/1999 | CN1204644A Multi-pipe circulating reactor for liquid-phase oxidizing oxonation synthesis of dimethyl carbonate |
| 01/07/1999 | EP0889025A1 Process for continuously preparing dialkyl carbonates and diols |
| 01/05/1999 | US5856554 Reacting an aromatic hydroxy compound with carbon monooxide and oxygen in presence of a platinum metal catalyst, a co-catalyst, a quaternary salt and a base |
| 01/05/1999 | US5856553 Carbonic acid 3-methoxycarbonyloxy-2,2,4,4-tetramethyl-cyclobutyl ester methyl ester and method of making therefor |
| 12/23/1998 | EP0885874A1 Method of synthesizing unsymmetric organic carbonates and preparing nonaqueous organic electrolytes for alkali ion electrochemical cells |
| 12/16/1998 | CN1201782A Diaminoalkyl quaternary ammonium salts and method for their preparation and use |
| 12/09/1998 | CN1201448A Process for continuously preparing dialkyl carbonates and dioles |
| 12/08/1998 | US5847189 Method for continuously producing a dialkyl carbonate and a diol |
| 12/03/1998 | WO1998054240A1 Process for the preparation of aromatic polycarbonate |
| 11/11/1998 | EP0877014A2 Diaminoalkylene quaternary ammonium salts, method for their preparation and use |
| 11/10/1998 | US5834615 Process for producing diaryl carbonate |
| 11/04/1998 | CN1197792A Liquid phase oxidation and carbonylation process synthesizing dimethyl carbonate |
| 11/03/1998 | US5831113 Process for producing a carbonic acid diester |
| 11/03/1998 | US5831111 Process for the continuous production of aryl carbonates |
| 10/29/1998 | WO1998047870A1 Process for the synthesis of 4-[6-(hexylcarbamoyloxy) hexylcarbamoyloxy]-piperidine-1- carboxylic acid 4-phenoxyphenyl ester |
| 10/20/1998 | US5824816 Recovery of catalyst systems from diarylcarbonate-containing reaction mixtures by melt crystallization |
| 10/14/1998 | CN1040206C Method for producing carbonic diesters |
| 10/13/1998 | US5821377 Catalytic reaction of alcohol with carbon monoxide in the presence of platinum compound |
| 10/13/1998 | US5821322 Diaminoalkyl quaternary ammonium salts and method for their preparation and use |
| 10/07/1998 | EP0869110A1 Method for preparing diaryl carbonates with improved selectivity |
| 09/30/1998 | EP0867428A1 Method for preparing diaryl carbonates employing beta-diketone salts |
| 09/30/1998 | CN1194261A Method for preparing diaryl ester carbonate using beta diketone |
| 09/30/1998 | CN1194260A Process for highly selective preparing diaryl ester carbonate |
| 09/23/1998 | EP0866051A1 Process for producing dialkyl carbonate |
| 09/23/1998 | CN1039903C Continuous production of aromatic |
| 09/22/1998 | US5811573 Process for producing a diaryl carnonate |
| 09/15/1998 | US5808135 2-(2,4,6-trimethyl phenyl)cyclopentane-1,3-dione derivatives |
| 09/09/1998 | CN1192434A Method for prepn. of trichloromethyl chloroformate, and prodn. equipment therefor |
| 08/19/1998 | EP0858991A1 Method for preparing diaryl carbonates employing hexaalkylguanidinium halides |
| 08/19/1998 | CN1190952A Process for the preparation of aromatic carbonate |