http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114184736-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_721bae3887ce5e491793bb01fa494575 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N31-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01N21-78 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N31-16 |
| filingDate | 2021-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9e26aebd13c99030f3852101721faa9 |
| publicationDate | 2022-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114184736-A |
| titleOfInvention | A kind of determination method of polycarboxylate superplasticizer macromonomer unsaturation |
| abstract | The invention relates to the technical field of determination of the degree of unsaturation of a water-reducing agent, in particular to a method for determining the degree of unsaturation of a polycarboxylate water-reducing agent macromonomer. The steps include the preparation of reagents; the dissolution of a sample; And to C=C addition; redox; titration. In the present invention, ethanol and potassium bromide-potassium bromate mixed solution are used as solvents to effectively reduce environmental pollution and potential occupational hazards to operators; starch is used as indicator to enhance the judgment of the titration end point; potassium bromide-potassium bromate mixed solution is used As a bromine source, it can effectively avoid the highly toxic mercury acetate; the residual ethylene oxide in the polycarboxylate superplasticizer macromonomer sample is ring-opened with a mixed solution of sulfuric acid-magnesium chloride, which completely eliminates residual ethylene oxide to sulfur The effect of sodium sulfate standard titration solution. At the same time, the method is accurate, simple, low cost, short inspection period, good repeatability and reproducibility, which can provide reference for the quality control of polycarboxylate superplasticizer macromonomer. |
| priorityDate | 2021-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.