http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103952002-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B29-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B67-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B33-048 |
| filingDate | 2014-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103952002-B |
| titleOfInvention | The pollution-free preparation process of direct blue 281 dyestuffs |
| abstract | The present invention relates to a kind of pollution-free preparation process of direct blue 281 dyestuffs, step is: first Fast Red B base, OP-10 are dissolved, then Sodium Nitrite diazotization is added, again diazotizing Fast Red B base and chromotropic acid are carried out coupling at pH=8.5,0-10 DEG C, coupling after product reduces by coupling glucose solution, temperature is t=50-60 DEG C, pH=12.5 ~ 13, and last spraying dry obtains dyestuff finished product.The present invention adds OP-10 when Fast Red B base dissolves, OP-10 significantly can increase the dissolution rate of Fast Red B base, effective reduction beating time, by original 4 hours, reduces to present 2 hours, the molten some temperature of OP-10 is 68-78 DEG C, its hydroxyl value is 87+5, the physics and chemistry feature of its uniqueness can impel the dispersion rate of Fast Red B base significantly to increase, and improves dispersion efficiency, shortens the whole production time further, enhance productivity, increase production capacity. |
| priorityDate | 2014-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.