http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107417393-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05G3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F251-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F251-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05G5-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05G3-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05G3-40 |
| filingDate | 2017-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107417393-B |
| titleOfInvention | Preparation of cellulose-based multi-nutrient-element polymer sustained and controlled release fertilizer |
| abstract | The invention relates to the field of water absorption and retention type sustained and controlled release fertilizers, and discloses a preparation method of a cellulose-based water absorption and retention type biodegradable multi-nutrient element polymer sustained and controlled release fertilizer. The method specifically comprises the following steps: reacting formaldehyde and urea at a certain temperature to obtain a hydroxymethyl urea solution; adding calculated amounts of acrylic acid, acrylamide monomer and cellulose into another reactor, and adding a certain amount of KOH solution to adjust the neutralization degree of acrylic acid; sequentially adding calculated amounts of initiator, potassium dihydrogen phosphate and the prepared methylol urea solution; after being mixed evenly, the mixture reacts at a certain temperature to obtain a viscous product; and finally, granulating and drying the viscous product to obtain the cellulose-based water-absorbing and water-retaining biodegradable multi-nutrient element polymer slow-controlled release fertilizer. The cellulose-based water-absorbing and water-retaining biodegradable multi-nutrient-element polymer slow-release fertilizer prepared by the invention has strong water-absorbing and water-retaining capability, and the nitrogen, phosphorus and potassium elements have excellent slow-release and controlled-release properties. |
| priorityDate | 2017-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 65.