http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0716129-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B48-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D471-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D471-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B48-00 |
| filingDate | 1995-11-23^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e19642d880c78167bfef2b4670dac802 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d8b16f35adf4466cfc8a0ae6afc24cc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05580e918a300a4a42d1e213a843e4c4 |
| publicationDate | 1996-06-12^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0716129-A1 |
| titleOfInvention | Process for the preparation of organic pigments |
| abstract | This invention relates to a process for the preparation of quinacridone pigments comprisingn (a) heating, at a temperature of about 80°C to about 145°C, a reaction mixture comprisingn (i) 2,5-dianilinoterephthalic acid or a 2,5-dianilinoterephthalic acid derivative having one or more substituents in at least one aniline ring, (ii) about 2 to about 10 parts by weight, relative to component (a)(i), of a dehydrating agent, and (iii) about 0.01 to about 10 percent by weight, relative to component (a)(i), of a salt other than an iron salt; (b) drowning the reaction mixture from step (a) by adding said reaction mixture to about 3 to about 15 parts by weight, relative to component (a)(i), of a liquid in which the pigment is substantially insoluble; (c) isolating the quinacridone pigment; and (d) optionally, conditioning the quinacridone pigment. |
| priorityDate | 1994-12-06^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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