http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109762360-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B29-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B29-15 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J4-00 |
| filingDate | 2019-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109762360-B |
| titleOfInvention | Automatic production process of azo dye |
| abstract | The invention provides an automatic production process of azo dyes, which comprises the following steps: 1) adding ammonia water into a diazo kettle, pouring 2B acid, adding ice, cooling to below 0 ℃, adding 30% hydrochloric acid, and adding 30% sodium nitrite aqueous solution by mass percent; adding CaCl 2 An aqueous solution; 2) putting water into a dissolving kettle, and adding a 30% sodium hydroxide aqueous solution; 3-hydroxy-2-naphthoic acid is poured in; 3) adding water into a rosin kettle, adding a 30% sodium hydroxide aqueous solution, and adding rosin; 4) adding the diazotized 2B acid diazo solution into a coupling kettle for reaction. The product prepared by the method has higher purity, does not need additives such as hyperdispersant and the like, and has lower production cost. |
| priorityDate | 2019-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.