| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C301-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-50 |
| filingDate |
1979-09-24^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d46ab90a0308a9c84b2947e9f5e7fec1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7dc99fc466fd9f703bdd9fe6fd6cd183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e8478e4bc290dee0073291a414f79f6 |
| publicationDate |
1980-04-16^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0009743-A1 |
| titleOfInvention |
Process for the preparation of 1-amino-8-hydroxy-naphthalene-4,6-disulphonic acid (K acid) |
| abstract |
The invention relates to a process for the preparation of 1-amino-8-naphthol-4,6-disulfonic acid (K acid) as a monoalkali salt from naphthylamine-trisulfonic acid isomer mixtures by alkaline pressure hydrolysis of naphthylamine trisulfonic acid mixtures and subsequent isolation of the K acid and the H- Acid through acidification and crystallization. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0074024-A1 |
| priorityDate |
1978-10-06^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |