http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106986796-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-32 |
| filingDate | 2017-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106986796-B |
| titleOfInvention | A kind of gemini surfactant and its preparation method and application |
| abstract | The invention discloses a Gemini surfactant foam discharge agent and its preparation method and application. In the drilling process, the conventional surfactant loses its foam-discharging performance due to the extreme use environment of high salinity and high oil content. The synthetic steps of the surfactant are as follows: 15～20 parts of 3-chloro-2-sodium hydroxypropanesulfonate and 25～50 parts of aliphatic tertiary amine are added into the three-necked flask containing the isopropanol aqueous solution, and heated Let it react at 70-90°C for 4-6 hours to obtain long-chain fatty hydroxypropyl sulfobetaine; combine 80-120 parts of long-chain alkyl hydroxypropyl sulfobetaine with 15-25 parts of dibromoalkane Put it into a three-necked flask, add 70-100 parts of an organic solvent, and after mixing evenly, add 8-12 parts of an alkali catalyst, add a small amount of 1.2-2.4 parts of a phase transfer catalyst, and react at 70-90 ° C for 18-48 h to obtain Gemini surfactant. It has the characteristics of simple process and excellent performance, and it has good effect as a foaming agent. |
| priorityDate | 2017-05-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.