http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2012154341-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-06 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/C07C227-10 |
| filingDate | 2011-05-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2014-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2012154341-A |
| titleOfInvention | METHOD FOR PRODUCING A MIXTURE OF CHELATING AGENTS |
| abstract | 1. A method of obtaining a mixture of aspartic acid diethoxysuccinate and an amino acid derivative of the general formula where n is 1-10, m is 0 or 1, and R is a hydrogen atom or an alkali or alkaline earth metal ion, including the interaction of a maleate with diethanolamine under alkaline conditions in the presence of a lanthanide catalyst with the formation of aspartic acid diethoxysuccinate, then the addition of aspartic acid, which reacts with the unreacted maleate to form iminoduccinic acid, i.e. producing an amino acid of formula I, where m is 0, or the addition of a diamine derivative of the general formula where n is as defined above, which reacts with an unreacted maleate to form an amino acid derivative of the formula I, where m is 1 and n is as defined above. 2. The method according to claim 1, characterized in that the amount of diethanolamine is in a stoichiometric ratio with the amount of maleate. The method according to claim 2, characterized in that the molar ratio of diethanolamine to maleate is from 1: 3.1 to 1: 5, preferably from 1: 3.5 to 1: 4.4. The method according to claim 1, characterized in that the maleate and diethanolamine are reacted for a period of time sufficient to convert at least 30 mol% of diethanolamine to aspartic acid diethoxy succinate. The method according to claim 1, characterized in that the molar ratio of lanthanide catalyst to maleate is from 1: 2.5 to 1: 5, preferably from 1: 3 to 1: 4.6. The method according to claim 1, characterized in that the lanthanide catalyst is a lanthanum catalyst comprising lanthanum (III) oxide and lanthanum (III) salts. The method according to claim 6, where the lanthanum (III) salts are selected from the group |
| 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: 51.