http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102933544-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e4b42a62479355e3612c7309fe680e9a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-24 |
| filingDate | 2011-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c21ba15b5089f1aec796a193536c06fc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ff1180446fe43a4b3f714b7ea35af7d |
| publicationDate | 2014-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102933544-B |
| titleOfInvention | Process for the preparation of a mixture of chelating agents |
| abstract | The present invention relates to a process for the preparation of a mixture of aspartic acid diethoxy succinate and an amino acid derivative of the general formula (I) wherein n is 1-10, m is 0 or 1, and R is hydrogen or an alkali metal or alkaline earth metal ion, comprising reacting maleate with diethanol amine under alkaline conditions in the presence of a lanthanoid catalyst to form aspartic acid diethoxy succinate followed by adding aspartic acid which reacts with unreacted maleate to form imino disuccinic acid, i.e. an amino acid derivative of formula (I) wherein m is 0, or by adding a diamine derivative of the general formula (II) NH2(CH2)nNH2 wherein n is as defined above, which reacts with unreacted maleate to form an amino acid derivative of formula (I) wherein m is 1 and n is as defined above. |
| priorityDate | 2010-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 72.