http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109053970-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-302 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F283-065 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-165 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B103-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F230-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F283-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F228-02 |
| filingDate | 2018-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109053970-B |
| titleOfInvention | Preparation method of anti-mud polycarboxylic slump retaining agent adopting carboxyl functional monomer |
| abstract | The invention provides a preparation method of a mud-resistant polycarboxylic slump retaining agent adopting a carboxyl functional monomer, which comprises the following steps: adding a polyether macromonomer, a carboxyl functional monomer, a phosphate functional monomer and water in a certain proportion into a reaction kettle, stirring and heating until the monomers are dissolved; controlling the temperature to be 55-60 ℃, and starting to add a certain amount of penetrant and chain transfer agent; after 5min, simultaneously beginning to dropwise add the solution A and the solution B, and after 10min, beginning to dropwise add the solution C, wherein the dropwise add time of the solution C is a hour, and the dropwise add time of the solution A and the solution B is a +0.5 hour; the solution A consists of an initiator, an alcohol organic solvent and water, the solution B consists of hydrogen peroxide and water, and the solution C consists of carboxylic ester, acrylic acid and water; after the dropwise addition is finished, heating to 70-75 ℃, keeping the temperature constant, curing for b hours, adding a neutralizing agent when the temperature of the reaction solution is lower than 30 ℃, and replenishing water to 1000 parts to obtain the product. The method can obtain the polycarboxylic acid water reducing agent with good mud resistance and adsorption resistance. |
| priorityDate | 2018-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 130.