http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102241803-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_29667ab902efec20a7681807274dba58 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G8-28 |
| filingDate | 2011-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_273973daf44927c85cd90c7881260bdd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a87c2a1908e29da35d5d56cc85797c20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8aa5665b96cf9601af68e96a31b011a6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d2c07e7e7a7f768a2e0c94668b81981b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af277dbb86b969a7cf07481f2b4e9131 |
| publicationDate | 2013-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102241803-B |
| titleOfInvention | Method for preparing modified sulfomethal phenolaldehy resin for drilling liquid |
| abstract | The invention provides a method for preparing modified sulfomethal phenolaldehy resin for drilling liquid, comprising the following steps of: a) mixing a sodium hydroxide solution, molten phenol, epoxy chloropropane and trimethyl amine, and reacting to obtain a cationic intermediate; and b) mixing the cationic intermediate with sulfomethal phenolaldehy resin, and reacting to obtain the modified sulfomethal phenolaldehy resin for the drilling liquid. In the modified sulfomethal phenolaldehy resin for the drilling liquid, provided by the invention, a quaternary ammonium salt cationic group is added and is capable of improving the adsorption capacity of the sulfomethal phenolaldehy resin and clay, thus, the adsorption amount of the resin on the clay is increased greatly so that the sulfomethal phenolaldehy resin has a better filtration loss reduction effect and better salt resistance. Results from embodiments of the invention indicate that the drilling liquid consisting of basic slurry, 5% of the modified sulfomethal phenolaldehy resin prepared according to the method provided by the invention, 5% of sulfonated lignite and 35% of NaCl has the high-temperature/pressure filtration loss of 31.8mL. |
| priorityDate | 2011-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.