http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0777648-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d648658dd620f548c24de39659a5e9e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-42 |
| filingDate | 1995-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e671e43eadb113568d9ad61376597bf2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e83ada4937ac5a780bf1e6f6830453e7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_50aa60951573d05e02851f79d14f7ff0 |
| publicationDate | 1999-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0777648-B1 |
| titleOfInvention | A process for preparing purified alkali metal salts of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate without isolation of intermediates |
| abstract | This invention relates to a 5 step process for preparing a purified alkali metal salt of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate in one reaction vessel without isolation of intermediates. The steps are as follows: A) reacting an alkali metal salt of 4-hydroxybenzenesulfonic acid with a C2 to C4 carboxylic anhydride in a solvent to form an alkali metal salt of 4-acyloxybenzenesulfonic acid and a C2 to C4 carboxylic acid. B) adding an [(1-oxyalkanoyl)amino]alkanoic acid and a transesterification catalyst to the reaction product of step A) and heating at a temperature and pressure sufficient to maintain reflux of the solvent and to remove the C2 to C4 carboxylic acid from the reaction vessel to form a reaction mixture containing an alkali metal salt of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate. C) removing the solvent from the reaction mixture formed in step B). D) mixing the alkali metal salt of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate product of step C) with acetic acid. E) and finally separating the product from the acetic acid. The purified alkali metal salt of 4-sulfophenyl-[(1-oxyalkanoyl)amino]alkanoate product is useful as a bleach activator in detergents. |
| priorityDate | 1994-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 220.