http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109280174-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G81-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G81-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-56 |
| filingDate | 2018-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109280174-B |
| titleOfInvention | Hyperbranched lignin grafted cationic polyacrylamide flocculant and preparation method thereof |
| abstract | The invention belongs to the technical field of flocculating agents, and discloses a hyperbranched lignin grafted cationic polyacrylamide flocculating agent with excellent flocculation performance and a preparation method thereof. The method comprises the following steps: (1) preparing a cationic polyacrylamide prepolymer with halogen atoms at the tail end by taking acrylamide and a cationic comonomer as raw materials and carrying out free radical polymerization reaction in water; (2) and mixing the prepolymer and lignin, dissolving in alkali liquor, stirring and heating to 50-100 ℃, and reacting for 1-6 h to obtain the hyperbranched lignin grafted cationic polyacrylamide flocculant with excellent flocculation performance. The invention also provides the hyperbranched lignin grafted cationic polyacrylamide flocculant with excellent flocculation performance, which is prepared by the method, has an adjustable branched structure, can be used for treating papermaking waste liquid, sewage and the like, has a simple and efficient preparation process, is green and environment-friendly, has cheap and easily-obtained raw materials, and can greatly reduce the production cost of the conventional polymeric flocculant. |
| priorityDate | 2018-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 67.