| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b8be6a6c990669567cc455d32b00535e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-47
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H21-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-68 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H17-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H23-765 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H21-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H23-76
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-47
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H17-68 |
| filingDate |
2005-05-13^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2009-10-27^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_098a127a6cb59958eb10f54d190ca955
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ef1c6cbb525269d72f3e3ba8cb8dc035
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00b044660059eb75fa6486fd31a99e88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d254b0814283fea70a49f162712c14d5 |
| publicationDate |
2009-10-27^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7608644-B2 |
| titleOfInvention |
Aqueous silica-containing composition |
| abstract |
The present invention refers to a process for the production of paper from a suspension containing cellulosic fibers, and optionally fillers, comprising adding to the suspension at least one cationic organic polymer and an aqueous silica-containing composition comprising an anionic naphthalene sulphonate formaldehyde condensate and anionic silica-based particles, the composition having a weight ratio of naphthalene sulphonate formaldehyde condensate to silica-based particles within the range of from 0.2:1 to 99:1, and containing naphthalene sulphonate formaldehyde condensate and silica-based particles in an amount of at least 0.01% by weight, based on the total weight of the aqueous silica-containing composition, and with the proviso that the composition contains substantially no cellulose-reactive sizing agent. The invention also encompasses an aqueous silica-containing composition and a method for preparation of an aqueous silica-containing compound. |
| priorityDate |
2001-12-21^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |