http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20160048836-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_77c3c5bf582e4f4ffb2f514d7e32186f |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-12 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H19-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-142 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-143 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-141 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-375 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-68 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H19-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-141 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-37 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-142 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-68 |
| filingDate | 2014-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0bce8d962f3804585884ad6fc3c91b3a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5cfd37ea7cf3bcc4c06562b3fa11ee1b |
| publicationDate | 2016-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20160048836-A |
| titleOfInvention | Silica sol |
| abstract | The present invention relates to a process for the preparation of a composition comprising a silica having a pH of at least about 10, a molar ratio SiO 2 : M 2 O of about 6: 1 to about 16: 1 wherein M is an alkali metal, a soluble silica concentration of at least about 3000 mg SiO 2 / Relates to a silica sol having an S-value of about 40%. The present invention also relates to a process for acidifying a solution of alkali metal silicate to a pH of 1 to 4 to form an acidic sol, preferably an acidic cation exchanger used to acidify an alkali metal silicate aqueous solution; Alkalizing said acidic sol by addition of an aqueous alkali metal silicate solution to yield an intermediate sol and ceasing the addition of an aqueous alkali metal silicate solution when said intermediate sol has reached a pH of from about 5 to about 8; Stirring the intermediate sol for a period of time from about 10 to about 6000 seconds without addition of an aqueous alkali metal silicate solution; The intermediate sol is alkalized by addition of an alkali metal silicate aqueous solution to provide a silica sol having a pH of at least about 10 and a molar ratio of SiO 2 : M 2 O of about 6: 1 to about 16: 1 (wherein M is an alkali metal) ; And, optionally, adding an aluminum compound to the acidic sol, the intermediate sol or the silica sol. The present invention also relates to a silica sol obtainable by the process of the present invention. The present invention also relates to the use of said silica sol as a flocculant in water purification and in paper and board manufacture. The present invention also provides a method of making an aqueous suspension comprising: (i) providing an aqueous suspension comprising cellulosic fibers; (ii) adding at least one drainage and retention aid comprising said silica sol to said suspension; And (iii) dehydrating the resulting suspension to provide a web of sheet or paper or board. |
| priorityDate | 2013-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.