http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112457494-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c46088d73c44e73624dfdd029a2a45c8 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1071 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02F1-13363 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1085 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02F1-13363 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate | 2020-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5377307b4b71cb163ef9924d842741b2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d98e7c91ca2410e9a852f1edd28e5cce |
| publicationDate | 2021-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112457494-A |
| titleOfInvention | A kind of liquid crystal optical film production method |
| abstract | The invention relates to a method for manufacturing a liquid crystal optical film, comprising: synthesis of 3,3'-dimethyl-4,4'-diaminodiphenylmethane, synthesis of 4,4'-diaminodiphenylpiperazine, 4 , the synthesis of 4'-diaminobenzoylpiperazine, the preparation of sample 1, the preparation of sample 2, the preparation of sample 3, the preparation of sample 4, the preparation of film; it is characterized in that: the 3,3'-di Synthesis of methyl-4,4'-diaminodiphenylmethane: install a thermometer, a condenser and a stirrer respectively on a 500ml three-necked flask, then add 0.5mol hydrochloric acid, 100ml water, and 0.5mol o-toluidine for stirring and cooling together to 15°C, and then dropwise add 0.25mol 40% formaldehyde solution to the mixed solution, fully stirring during the dropping process, and pay attention to the reaction temperature; the present invention has good transparency, solubility, The mechanical properties, heat resistance and negative birefringence are low in cost and have the advantages of compensating for the liquid crystal display, thus effectively solving the problems and deficiencies proposed by the present invention. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113488743-A |
| priorityDate | 2020-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.