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Level 1:Core information
Record no 201103039645
Activity status Active
Working Title PROCESS FOR THE PREPARATION OF DIALKYL CARBONATE  
Working Inventors SRINIVAS DARBHA;SRIVASTAVA RAJENDRA;RATNASAMY PAUL; 
Contributing institutions NCL 
Administered by  
Ownership  
Categories > Subjects Catalysis 
Categories > Portfolio Fine chemical/pharma intermediate drugs/bioactives 
Disclosure number 2005-INV-0024
NCL No 2005-NCL-0024 
CSIR No 2005-NF-0181  
Priority date 10-07-2005 
Country US 
Application number 11/394136  
Provisional filing date  
Complete filing date 03-30-2006  
Publication status Yes  
Publication date 05-14-2009  
Publication no 7518012 B2  
Granted number 7518012  
Granted date 04-14-2009  
Final title PROCESS FOR THE PREPARATION OF DIALKYL CARBONATE  
Final Inventors SRINIVAS DARBHA;SRIVASTAVA RAJENDRA;RATNASAMY PAUL;  
Abstract The present invention provides a process for the preparation of dialkyl carbonates of general formula 1 wherein R alkyl C1 C8 or C6H5CH2 the said process comprises a reaction in between cyclic carbonate and alcohol in the presence of a solid double metal cyanide complex catalyst at a temperature in the range of 140 180 C. for a period of 4 10 hrs followed by the separation of catalyst from the above said reaction mixture by known methods to obtain the desired product.
Case status Granted + Inforce  
Licensing status  
Licensing case no  
Client name  
Lead inventors  
Categories > Industry > Primary Organic Chemicals, Fine Chemicals, Intermediates, Feedstocks 
Categories > Industry > other  

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