| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5e0b1a4cc01059d46d77c8264b49c8a6 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2019-521
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-40 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C3-063
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C3-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-544
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C1-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C1-56 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C1-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C3-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C3-10 |
| filingDate |
2019-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_840caeadbe64101f34f23f9567d3288b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9d19776dbb4a8e7d9c47a11fc828107f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_837898f5c836f1a9743185f5373e7c54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23890e41bc09b7940ae9fa468e4100be |
| publicationDate |
2021-06-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2021189141-A1 |
| titleOfInvention |
Inorganic pigments for use in liquid crystal devices |
| abstract |
A method of preparing non-conductive coated pigment particles for use in liquid crystal applications. A dispersion is prepared of a pigment such as carbon black in a solution comprising a first solvent and a surfactant. The dispersion is disrupted in order to separate agglomerates. A non-conductive coating material is added. In some embodiments of the invention, the non-conductive coating comprises a polymer soluble in the first solvent, and the coating is prepared by addition of a second solvent in which the polymer is insoluble. In other embodiments, the non-conductive coating comprises a metal oxide, and the coating is prepared by addition of a metal alkoxide that hydrolyzes to form the coating. The non-conductive pigment particles are then separated from the supernatant liquid, dried, and reduced to a powder. Liquid crystal devices comprising the particles typically have a haze of less than 7% and a total transmittance of >55%. |
| priorityDate |
2018-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |