http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2752532-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c988f905de1f841e4b90b6f9e1e7075 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-91 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B18-147 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B18-14 |
| filingDate | 1996-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e650dc5b47d5518cae880eb50689964 |
| publicationDate | 1998-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | FR-2752532-A1 |
| titleOfInvention | METHOD USING A SPECIFIC ADJUVANT FOR DEFLOCULATING, DISPERSING AND SUBSIDIATLY DENSIFYING FINE POWDERS SUCH AS SILICA FUMES |
| abstract | Silica fumes are very fine powders, recovered in the fumes from Silicon ovens. They are used with success in concrete, mortars and grouts, where they improve the properties and the rheological and mechanical characteristics. But their very low density (0.15 - 0.20) makes handling difficult. We are therefore obliged to densify them beforehand, in particular by reaglomerating them. This operation has the drawback of limiting their redispersion in aqueous medium at the time of use. The invention relates to a process for improving the deflocculation and redispersion in water and, alternatively, the operation of prior densification of the silica fumes, by virtue of specific adjuvants consisting of the combination of three anionic surfactants and a acrylic homopolymer in the form of water soluble salts. The invention is characterized on the one hand by the fact that depending on the choice of the salts of the constituents it is possible to preferentially influence either the redispersion or the prior densification operation; on the other hand, by the fact that the adjuvant participates at the same time in the deflocculation and dispersion of the cements and other fine elements of the materials, resulting in a significant improvement in their characteristics. The invention relates to the applications of the process to silica fume, to the usual fine mineral additions to cements, as well as to pulverulent fertilizers and phytosanitary products. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2871154-A1 |
| priorityDate | 1996-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.