| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1e70c0aeade92d7571d955d3b90ea06e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-62 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G23-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G23-075
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G23-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y30-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09C1-3607 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C3-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09C1-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G23-047 |
| filingDate |
2005-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2007-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b1387cf03edbac85dd06cd6f37c8da8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5bb802c1a88a9612757ab054e6ae2fcb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2f64f03330fe8e0a898cf7d310ef06a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9f9c66fd1d25c36d8c1d38dd83ade66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_482580585d7a178ba920d4b27c0e4e28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_626d70acd9be5ac744d9283f404965af |
| publicationDate |
2007-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7247200-B2 |
| titleOfInvention |
Titanium dioxide finishing process |
| abstract |
This disclosure relates to process for producing titanium dioxide (TiO 2 ) pigments, comprising the following steps: a) oxidizing a mixture of titanium tetrahalide and a rutile forming agent, such as aluminum halide, present in the vapor phase and in the presence of a nucleant to form a gaseous suspension comprising titanium dioxide particles; b) passing the gaseous suspension to a cooling conduit; c) introducing scouring material into the cooling conduit; wherein the particles of the scouring material have a diameter in the range of about 0.25 mm to about 12.7 mm; d) separating the vapor phase to form a powder comprising the titanium dioxide particles and the scouring material; and e) simultaneously subjecting the powder to substantially uniform heating at a temperature of about 300° C. to about 600° C. and reducing the size of the titanium dioxide particles and the particles of the scouring material in the powder to a mean particle size of about 50 nm to about 1000 nm, whereby the titanium dioxide pigment has a chloride content of less than about 500 ppm. The so treated powder may have a residual free chlorine content of less than about 1 ppm. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008105165-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008187486-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9862616-B2 |
| priorityDate |
2005-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |