http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108975746-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/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B24-2652 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B103-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F230-08 |
| filingDate | 2018-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108975746-B |
| titleOfInvention | Synthesis method of polycarboxylate superplasticizer containing siloxy |
| abstract | The invention provides a method for synthesizing a polycarboxylate superplasticizer containing siloxy, which comprises the following steps: s1: adding maleic anhydride and silane coupling agent, and reacting completely at the reaction temperature of 0-10 ℃ to generate organic silicon oligomer; s2: adding the organic silicon oligomer, an organic solvent and an initiator, dropwise adding an unsaturated carboxylic acid monomer at a constant speed, reacting completely at the reaction temperature of 55-85 ℃, and performing post-treatment to obtain a target product. The polycarboxylate superplasticizer containing the siloxy groups has excellent retarding and plasticity-maintaining effects, and an organic solvent system is adopted, so that the condensation reaction of silicon hydroxyl generated after hydrolysis of silicon methoxyl or silicon ethoxyl of a silane coupling agent is avoided, and the adverse effect that the common polycarboxylate superplasticizer cannot effectively play a role in precast concrete is avoided. The initial performance and the time performance of the polycarboxylate water reducer containing the siloxy are obviously superior to those of a common polycarboxylate water reducer sold in the market. |
| priorityDate | 2018-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.