http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105236798-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/C04B24-22 |
| filingDate | 2014-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105236798-B |
| titleOfInvention | A kind of preparation method of naphthalene water reducer |
| abstract | A kind of preparation method of naphthalene water reducer, comprises the following steps：(1) methyl naphthalene and phenol are distinguished into sulfonation, obtains sulfonated methyl naphthalene material and p-hydroxybenzenyl sulfonate material；(2) reaction is hydrolyzed in sulfonated methyl naphthalene material, azeotropic deviates from unreacted methyl naphthalene or its homologue, and remaining sulfonated methyl naphthalene material enters in step (3) reaction；(3) formaldehyde for the p-hydroxybenzenyl sulfonate material concentrated sulfuric acid acidifying that step (2) is obtained sulfonated methyl naphthalene material, step (1) are obtained carries out condensation reaction, must be condensed material；(4) it is 7.5~9 that alkali lye is added in the condensation material that step (3) is obtained and carries out neutralization reaction to pH value, and reaction end obtains naphthalene water reducer.That the naphthalene water reducer of the present invention has is good to the adaptability of cement, concrete workability is good, protect plasticity can be compared with strong, the excellent performance such as concrete gradual loss is small, water-reducing rate is higher；And preparation method technique is simple, easily-controlled reaction conditions, and the production cost of naphthalene water reducer can also be reduced. |
| priorityDate | 2014-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.