http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9139760-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_759df5a77ceb7d655cf105f20141f20d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-588 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D5-4411 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-588 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D5-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-16 |
| filingDate | 2013-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca767829b5280ad7920ebe0161235b04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74069112a4e59f9d9c93355d8aa06751 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d47e25d22cbdaf9c9ee41adddcda916 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_802477a58427e522a616cc6e3eb8c3cc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8fec3682da04c22c3fa47dc28260d3a0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf46a4d31207a01ae968b3b6bd20636b |
| publicationDate | 2015-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-9139760-B2 |
| titleOfInvention | Crosslinked swellable polymer |
| abstract | The invention is directed to stable crosslinked water-soluble swellable polymers, methods for making same, and their various uses in the hygiene and medical arts, gel electrophoresis, packaging, agriculture, the cable industry, information technology, in the food industry, papermaking, use as flocculation aids, and the like. More particularly, the invention relates to a composition comprising expandable polymeric microparticles having labile crosslinkers and stable crosslinkers, said microparticle mixed with a fluid and an unreacted tertiary crosslinker that is capable of further crosslinking the microparticle on degradation of the labile crosslinker so as to form a stable gel. A particularly important use is as an injection fluid in petroleum production, where the expandable polymeric particles are injected into a well and when the heat and/or pH of the well cause degradation of the labile crosslinker and when the particle expands, the tertiary crosslinker crosslinks the polymer to form a stable gel, thus diverting water to lower permeability regions and improving oil recovery. |
| priorityDate | 2009-03-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 293.