| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_01dc8a8a3ae90ebd3658b65c494e2a4d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ba3cf9829d83295234270409f28fada1 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B67-0036
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B67-0086
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B48-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D11-322
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D11-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D11-101 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D11-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D11-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B67-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B67-22 |
| filingDate |
2010-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41e0ab18a4c6dbe77c2e4cb69466bab3 |
| publicationDate |
2011-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2011054667-A1 |
| titleOfInvention |
Preparing and dispersing surface-modified colour pigments |
| abstract |
A method of preparing a pigment comprising in order the steps of: a) providing a pigment containing a nucleophile group under basic conditions; b) reacting the pigment with 1,4-butane sultone or 1,3-propane sultone in an alkaline medium to form sulfobutyl groups respectively sulfopropyl groups on the pigment surface; and c) adding acid to convert the sulfobutyl groups or sulfopropyl groups to sulfonic acid groups. Pigments obtainable by the method and non aqueous pigment dispersions are also disclosed. |
| priorityDate |
2009-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |