http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2906974-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_016ec0441c3b9c111292fd5360cea81a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-805 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-26 |
| filingDate | 2014-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_929bea249f5b6603fc9b32f21730133d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_294d4f534a0e8724617ebcf8f8d31c9e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e51934c1a50f6872123ca9b516d2bc8d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d5cb343002f9391879ccec241e640595 |
| publicationDate | 2014-09-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2906974-A1 |
| titleOfInvention | Proppant with polyurea-type coating |
| abstract | Proppants for hydraulic fracturing of oil and gas wells are coated with a polyurea-type coating. In a preferred embodiment, the polyurea-type coating is formed by contacting a polymeric isocyanate with an amount of water and a blowing catalyst at a rate and quantity sufficient to generate a reactive amine in situ on the outer surface of the proppant which thereby reacts with unconverted polymeric isocyanate to form a thin polyurea-type surface coating that is substantially solid and lacks foam or substantial porosity. Alternatively, the polyurea-type can be produed by selecting reactive amine compounds and isocyanates to develop the coated proppant. The coated proppants retain the discrete, free-flowing character of the original core solids but with the beneficial effects of the polyurea-type coating of the present invention. |
| priorityDate | 2013-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 125.