http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-200540114-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b8be6a6c990669567cc455d32b00535e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-1435 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-143 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01F23-50 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-143 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-68 |
| filingDate | 2005-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85d2509932750bd6a3ede5b21cf54182 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba3faea0ea696fd67f2ca3146ac6f326 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8231b0489e8500392bd7a4fd37827006 |
| publicationDate | 2005-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-200540114-A |
| titleOfInvention | Silica-based sols and their production and use |
| abstract | The invention relates to a process for producing an aqueous silica-based sol which comprises: (a)providing a cationic ion exchange resin having at least part of its ion exchange capacity in hydrogen form; (b)bringing said ion exchange resin in contact with an aqueous alkali metal silicate to form an aqueous slurry; (c)stirring said aqueous slurry until the pH of the aqueous phase in the range of from 5.0 to 8.0; (d)adjusting the pH of said aqueous phase to above 9.0; and (e)separating said ion exchange resin from the aqueous phase after step (c) or after step (d), and, optionally (f)providing an aqueous silica-based sol having an S value between 10 and 50%. The invention also relates to silica-based sols obtainable by the processes as well as a process for producing paper which comprises (i)providing an aqueous suspension comprising cellulosic fibres; (j)adding to the suspension one or more drainage and retention aids comprising a silica-based sol according to the invention; and (k)dewatering the obtained suspension to provide a sheet or web of paper. |
| priorityDate | 2004-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 91.