http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2163400-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_170f4c8b5df6a5bb879c0f4452a13e1d |
| 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/C09B48-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D471-04 |
| filingDate | 1995-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b3d47b9c93951d3ad6b1a29cf7c52a2b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad472ed50d3a4d9dd6e37b9b3dcfd8a7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eafcd88c602234476d9bd64f4c4f387e |
| publicationDate | 2007-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2163400-C |
| titleOfInvention | Process for the preparation of organic pigments |
| abstract | This invention relates to a process for the preparation of quinacridone pigments comprising (a) heating, at a temperature of about 80°C to about 145°C, a reaction mixture comprising (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 | 1994-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 81.