| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S534-01 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B35-35
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B43-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-601 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B43-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B35-35 |
| filingDate |
1980-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1981-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f47573f7b1ebd68b7c80025146402a35
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4d806a3a157bcb4f60196bb629dbd79 |
| publicationDate |
1981-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4308163-A |
| titleOfInvention |
Novel yellow azo dyes and dichroic liquid crystal composition made therewith |
| abstract |
Novel yellow azo dye compositions and a liquid crystal composition containing the yellow azo dye composition are disclosed. The yellow azo dye composition, having terminal ester groups has the general formula: <IMAGE> +TR <IMAGE> wherein R and R' are acyl groups having the formula: <IMAGE> and R2 is an alkyl or substituted alkyl wherein the alkyl has at least 4 carbon atoms, or R2 is an aryl, arylalkyl, substituted aryl or substituted arylalkyl. When the yellow azo dichroic dyes are used as a guest in a host liquid crystal material, they form a novel liquid crystal composition for use in liquid crystal displays. The disclosure also embraces a method of improving the black color of dichroic dyes for use in black liquid crystal displays, wherein a dye composition having a mixture of dichroic dyes of various colors and containing at least one yellow azo dichroic dyes as described above is added to a host liquid crystal material. The mixture of dichroic dyes of various colors must be one which absorbs radiation in the spectral range of about 400-700 nm to produce the substantially black color for use in black liquid crystal displays. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0080153-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4478739-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4491532-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4721779-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0099014-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4401369-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4676923-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4737310-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4426312-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4411812-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8202054-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4493532-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4724259-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0099014-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4600527-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2523147-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4610803-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4408840-A |
| priorityDate |
1980-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |