http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114752228-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c8892d64cf2f682ff0d12769e633d3b0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D11-037 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B67-006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B67-0079 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B67-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B67-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D11-037 |
| filingDate | 2022-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_037e00e00a09c2ba86e5a8d5c22f01de |
| publicationDate | 2022-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114752228-A |
| titleOfInvention | A kind of preparation method and application of modified composite pigment yellow |
| abstract | The invention provides a preparation method of modified composite pigment yellow, which comprises adding water, 30% hydrochloric acid and 3,3'-dichlorobenzidine into a container A at normal temperature, and simultaneously adjusting the suspension in the container A Cooling, and stirring and beating the suspension in container A, make the 3,3'-dichlorobenzidine suspension evenly dispersed; After stirring for 20-40 minutes, use pH test paper to detect the pH value of the suspension in container A; When the pH value is 0.5-1, add 30% sodium nitrite dropwise under the liquid level of the suspension and stir while stirring, the stirring intensity is 300 rpm, and the temperature is controlled not to exceed 8 degrees Celsius; use liquid chromatography to detect 3 , 3'-dichlorobenzidine residual amount, when 3,3'-dichlorobenzidine is fully reacted, add urea, consume excessive nitrous acid, and detect whether the nitrous acid is consumed by starch potassium iodide test paper; the present invention passes The control of stirring intensity, reaction temperature and pH value can ensure that the pigment yellow is bright yellow, and the use effect is better. |
| priorityDate | 2022-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.