| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ecfc85c9db31122626e90e4eeaec551e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2111-00146
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-22 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-487
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-467
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-163 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-467
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-487
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-16 |
| filingDate |
2017-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6f482a5a1dfe9f097419f99c0db4d7b2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_95fd161214b4874c09e2d1960c7f5317 |
| publicationDate |
2017-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2017158441-A1 |
| titleOfInvention |
Carboxylic acid/acrylamidoalkane sulfonic acid/styrene sulfonate copolymers for ultrahigh temperature and pressure retardation of oil-well cement |
| abstract |
This invention relates to a unique application of a water soluble monounsaturated carboxylic acid/acrylamidoalkane sulfonic acid/ primary copolymerizable comono- mer copolymers, such as, for example, acrylic acid (AA)/2-acrylamido-2- methylpropane sulfonic acid (AMPS)/sulfonated styrene (SS) random copolymers as synthetic retarders for oil-well cement setting retardation. The set retarder performs well at wide temperatures from below 200 °F up to ultra-high temperature and pressure. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114516737-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109824822-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109824822-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113248169-A |
| priorityDate |
2016-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |