http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104558215-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B103-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B30-18 |
| filingDate | 2014-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104558215-B |
| titleOfInvention | Dual-modified maltodextrin high efficiency water reducing agent and preparation method thereof |
| abstract | The invention provides a dual-modified maltodextrin high efficiency water reducing agent. The structural formula is disclosed as Formula I, wherein R1, R2 and R3 are respectively and independently sulfonate, mono dicarboxylate or hydrogen, and at least comprise one sulfonate (SO<3->) and one mono dicarboxylate. The invention also provides a preparation method of the water reducing agent. The preparation method comprises the following steps: diluting concentrated sulfuric acid with an organic solvent, carrying out sulfonation on maltodextrin at low temperature, carrying out esterification reaction on the sulfonation product by using dibasic acid anhydride, finally, dissolving the product in water, and adding an alkali for neutralization. The dual-modified maltodextrin high efficiency water reducing agent has the advantages of high water solubility and better water reducing performance than most naphthalene high efficiency water reducing agents at present, can be used as a cement water reducing agent, and has the characteristics of recoverability, no environmental pollution and the like. |
| priorityDate | 2014-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.