| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C301-00 |
| filingDate |
1985-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ec9e900d03f9b8f47aa9d6eae8dadaa0 |
| publicationDate |
1986-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0175226-A2 |
| titleOfInvention |
Process for the preparation of salts of alkaline or earth-alkaline metals of benzaldehyde-2,4-disulfonic acid |
| abstract |
The invention consists in an improved process for the preparation of salts of benzaldehyde-2,4-disulfonic acid from 2,4-dichlorobenzaldehyde. In the process, 2,4-dichlorobenzaldehyde with an aqueous solution of an alkali metal or alkaline earth metal sulfite and / or hydrogen sulfite at 140-180 ° C. and a reaction time of less than 7 hours becomes the corresponding salt of benzaldehyde-2,4-disulfonic acid in high yield implemented. The product is used in the electroplating industry and in the production of triphenyimethane dyes. |
| priorityDate |
1984-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |