http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104250358-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ddac65606de3b966e6f33acf1f1407c8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_50d6a89a0b3c7b2ea9f0144a059a4573 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F283-00 |
| filingDate | 2013-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4395d2cc6dccbe1439e32e6d2239c0b |
| publicationDate | 2014-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104250358-A |
| titleOfInvention | Hyperbranched copolymer, and preparation method and application thereof |
| abstract | The invention discloses a hyperbranched copolymer, and a preparation method and application thereof. The hyperbranched copolymer is characterized by comprising a dendritic structure unit A, an amphion structure unit B, a structure C and a structure D with the molar ratio of 0.03-0.35:0.03-0.5:0.03-0.3:0.15-0.95, and the apparent viscosity of a hyperbranched copolymer aqueous solution with the mass concentration of 1% is 20-60 mPa*s. The provided hyperbranched copolymer has relatively good filtration reducing characteristic under the high-temperature (180 DEG C) high-salt (saturated brine) high-calcium (10% calcium chloride) conditions, and has no adverse influence to drilling-fluid filtration loss when guaranteeing good inhibition capability of a drilling fluid. The product has the characteristics of being low in production cost, fast in production speed, high in production efficiency, stable in quality, good in water solubility and convenient for on-site application. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104844766-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104844765-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104844766-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104844765-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114686185-A |
| priorityDate | 2013-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 74.