http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110283579-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-5086 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-512 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-5083 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-516 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-516 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-512 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F222-38 |
| filingDate | 2019-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110283579-B |
| titleOfInvention | Temperature response type microgel and preparation method thereof |
| abstract | The invention discloses a temperature response type self-degradation microgel and a preparation method thereof, belonging to the technical field of temporary plugging in oil exploitation. The technical scheme is as follows: (1) respectively preparing ethanol solutions of azodiisobutyramidine and maleic anhydride, and then dripping the azodiisobutyramidine into the ethanol solution of maleic anhydride, wherein the molar ratio of the azodiisobutyramidine to the maleic anhydride is 1: 2-3, so as to prepare the crosslinking agent with azo groups and thermal degradation property; (2) adding acrylamide and a temperature-sensitive cross-linking agent into a flask, introducing nitrogen for 30min, adding 0.1-0.5% of an initiator, reacting at 30 ℃ for 4-8 h, crushing, and drying to obtain the temperature-responsive thermal degradation type microgel. The microgel can be used for temporary plugging, can be degraded into water-soluble molecular fragments at reservoir temperature after construction, and can automatically plug. The microgel has the advantages of simple preparation, cheap and easily obtained raw materials and the like, and has wide application prospect in well drilling, temporary plugging acidification and temporary plugging fracturing. |
| priorityDate | 2019-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.