| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C229-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C227-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-02 |
| filingDate |
1979-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff0ffae02c090e16c4e13dd19cd6d1d0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_54794dbbfb7c1ed58bae7a6d12992085 |
| publicationDate |
1981-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-2933531-A1 |
| titleOfInvention |
METHOD FOR PRODUCING L-AMINOANTHRACHONONE (BETA) CARBONIC ACIDS |
| abstract |
Prepn. of 4-X-1-aminoanthraquinone-2-carboxylic acids (I) (where X is H or halogen) is carried out by treating the corresp. 4-X-2-acetyl 1-aminoanthraquinone (II) with hypochlorite at 60-100 deg.C in an aq. medium in the presence of at least 3 (pref. 3-5) moles of alkali metal hydroxide per mole of (II). (I) are intermediates for dispersion dyes, vat dyes and pigments. The process is simple, economic, and gives high yields of high-purity (I). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5066820-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0410315-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0410315-A2 |
| priorityDate |
1979-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |