http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104974298-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-58 |
| filingDate | 2014-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104974298-B |
| titleOfInvention | Resistance reducing agent for fracture and preparation method thereof |
| abstract | The invention relates to a preparation method of a resistance reducing agent for fracture. The preparation method includes the steps of: (1) mixing an acrylamide-series monomer, an anionic monomer containing a double bond, a cationic polymer template, a dispersing agent, a molecular weight regulating agent and inorganic salts with water with pH value being regulated to obtain a water solution of which the pH value is 4-7; and (2) under an inert atmosphere, contacting the water solution with an initiator in batches and performing a polymerization reaction. The molecular weight of the cationic polymer template is less than 1000000, and the structure formula of the cationic polymer template is represented as the formula (I). The invention also relates to the resistance reducing agent for fracture prepared through the method. The resistance reducing agent for fracture is high in resistance reducing rate, is low in formation damage property, is high in inhibition on clay expansion, is good in water solubility and is green and environment-friendly. |
| priorityDate | 2014-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 127.