http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1663938-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1cbafbf667732c7b3b954a6d61d9a4c5 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-00 |
| filingDate | 2004-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2157a33cf8222dd782af839203cecebd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee2cb133b8f464af7e58fc39c963f2a0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cb3bae9c496f4516698243880614f126 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f7cebb16ab2397d196285c93a6816904 |
| publicationDate | 2006-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1663938-A1 |
| titleOfInvention | Method for the production of organic carbonates |
| abstract | The invention relates to a method for the production of monomer organic carbonates, wherein urea, substituted urea, a salt or an ester of carbamide acid or one of the N-substituted derivatives thereof is reacted in a first step in a polyalkylene glycol, a polyester-polyol or a polyether-polyol of general formula (I), wherein R represents a linear or branched alkylene group having 2 - 12 carbon atoms and n is a number between (2) and (20), or in a completely or partially hydrolysed polyvinyl alcohol of general formula (II) wherein R' represents an alkyl group, an aryl group or an acyl group having 1 - 12 carbon atoms, p and q are numbers between 1 and 20, or in mixtures of said compounds in the presence of a catalyst facilitating the separation of ammonia in order to form a mixture containing carbonates and carbamates, the ammonia becomes free or the amine is removed form the reaction mixture by means of a strip gas. In a second reaction step (transesterification), the mixture containing the carbonates and carbamates is reacted with a monomer alcohol or a phenol whereby monomer carbonates are formed and polymer polyalcohols of formulae (I) or (II) are reformed. |
| priorityDate | 2003-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.