| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0344aff506c3e09ead773018a02ce030
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e49d92a935cb0ee2d249437aa09050f0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0d20bffa7d9ebc77bd9e424507fe1bea
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8bcf612dd6863e11ef7d506d78193626
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_abfe2c837da29785e499cd833f050107 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S423-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S162-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P40-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-03 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-181
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F11-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H19-385
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-675
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0064
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C11-0078 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H19-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-67
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F11-18 |
| filingDate |
1997-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_13d686c85c92e4b2799301d557403b28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43a40c6ae2aeec6776888642c895aa35
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f7ad8dec537e183e7dc9e79cea97cef3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f351ac6e5d15d72538c659efcbed5f7e |
| publicationDate |
1998-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9825853-A1 |
| titleOfInvention |
Process for preparing calcium carbonate |
| abstract |
A process for preparing calcium carbonate wherein the causticizing step is utilized to prepare inexpensive spindle- or rice-grain-shaped calcium carbonate which can impart as a papermaking filler the properties useful for paper, such as whiteness, opacity, and prevention of wire wear. When a white liquor is used in the slaking of quick lime, the slaking as the first stage is carried out in such a manner that the quick lime used has a calcium carbonate content of not more than 10 % by weight and the slaking is carried out in a concentration of 0.5 to 60 % using a white liquor to prepare a milk of lime. On the other hand, when a gree liquor is used in the slaking of quick lime, the slaking as the first stage is carried out in such a manner that the calcium carbonate content of the quick lime used is 0.1 to 10 % by weight and the slaking is carried out in a concentration of 20 to 60 % using a green liquor to prepare a milk of lime. A causticizing reaction in the second stage is carried out under conditions of a green liquor addition rate of 0.02 to 0.5 cc (green liquor)/min/g (quick lime) and a reaction temperature of 20 to 105 °C to prepare spindle- or rice-grain-shaped calcium carbonate. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5985367-A |
| priorityDate |
1996-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |