http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108484828-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K2201-011 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-588 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K9-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K9-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-588 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F230-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-36 |
| filingDate | 2018-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108484828-B |
| titleOfInvention | Water-in-water type cationic emulsion containing nano silicon dioxide core-shell microspheres and preparation method thereof |
| abstract | The invention discloses a water-in-water type cationic emulsion containing nano silicon dioxide core-shell microspheres and a preparation method thereof, belonging to the technical field of profile control and water shutoff of petroleum fields. The cationic emulsion is prepared by using modified nano silicon dioxide, a water-soluble nonionic monomer and a cationic monomer as raw materials and initiating polymerization by an initiator in the presence of inorganic salt, a dispersion stabilizer, a chelating agent, a reducing agent, a cross-linking agent and deionized water. The preparation process is simple, the operation is convenient, the cost is greatly reduced, the preparation method has a wide prospect, the obtained emulsion forms core-shell microspheres taking nano silicon dioxide as a core and polymers as shells, the emulsion is dissolved and tackified, the microspheres absorb water and expand to have a plugging effect, the cationic emulsion can be compounded with the polymers, and the polymers can be injected to underground for plugging by virtue of the characteristic of low viscosity of the cationic emulsion. |
| priorityDate | 2018-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.