http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-646099-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4c727a78330ffca2fe021cb9b1cc932e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B19-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B19-02 |
| filingDate | 1948-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1950-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-646099-A |
| titleOfInvention | New pigments of the oxazine series |
| abstract | 2.5 - Bis - (41 - diphenylamino) - 1.4 - benzoquinone is made by heating 2 mols. 4-aminodiphenyl and 3 mols. benzoquinone in alcohol, removing the solvent, and extracting the hydroquinone formed with alkali. The 3.6-dichloro- and dibromo-derivatives are made by heating 4-aminodiphenyl with chloranil or bromanil in alcohol in presence of sodium acetate or bicarbonate.ALSO:2.9-Diphenyl-triphendioxazine which may be substituted by chlorine or bromine is made by heating in an organic liquid medium 2.5-bis-(41-diphenylamino)-1.4-benzoquinone or the 3.6-dichloro- or 3.6-dibromo-derivatives thereof. A ferric or phosphorus halide or an organic acid halide may be present, and an oxidizing agent such as m-nitrobenzene sulphonyl chloride. Examples using each of the three starting materials are given. The products are violet pigments and may be co-milled with an inorganic substrate according to the process of U.S.A. Specification 2,402,167. 2.5 - Bis - (41 - diphenylamino) - 1.4 - benzoquinone is made by heating 2 mols. 4-amino-diphenyl and 3 mols. benzoquinone in alcohol, removing the solvent, and extracting the hydroquinone formed with alkali. 2.5 - Bis - (41 - diphenylamino) - 3.6 - dichloro-or dibromo-1.4-benzoquinone is made by heating 4-aminodiphenyl with chloranil, or bromanil in alcohol in presence of sodium acetate or bicarbonate. Specifications 8886/12, [Class 2 (iii)], and 367,389 also are referred to. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3031321-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2843498-A |
| priorityDate | 1948-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.