| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1b7a5c546db0678dbd6f9594fc43f2d6 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-575 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-602
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C235-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-607 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C235-10 |
| filingDate |
2020-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ea71764d1ba250dae236dddc909923e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3a8fec8a1f23282a5fefa916b5c681d1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23d6ac18f24fb57dd7995f48fbd9d420
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f29a46a12b968bff8f742a3a366d5478 |
| publicationDate |
2021-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2021238472-A1 |
| titleOfInvention |
Methods for clay swelling inhibition using gemini surfactants containing a saturated linker |
| abstract |
Methods of controlling clay swelling and stabilizing subterranean geological formations containing swellable clays (e.g., montmorillonite, bentonite) are described. The methods involve treating the swellable clays with a composition containing an amidoamine-based gemini surfactant. The gemini surfactant has dual chains connected via an alkylene linker, whereby each chain contains a quaternary ammonium head group and an ethoxylated alkyl tail. As examined by linear swelling and free swelling tests, use of the gemini surfactant is effective in reducing swelling of the clays. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115490498-A |
| priorityDate |
2020-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |