http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109575314-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2301-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-05 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L1-02 |
| filingDate | 2018-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109575314-B |
| titleOfInvention | Method for dissolving cellulose |
| abstract | The invention relates to a method for dissolving cellulose, which comprises the following steps: firstly, mixing: mixing the cellulose solid with sodium hydroxide, urea and water at normal temperature to form a solid-liquid mixture; the mass fraction of cellulose in the solid-liquid mixture is 3-20%, the mass fraction of sodium hydroxide is 4-15%, the mass fraction of urea is 4-15%, and the balance is water; (II) cooling: and (3) cooling the solid-liquid mixture from the normal temperature to-12 to-22 ℃ at the rate of 0.2-5 ℃ per minute to obtain a viscous cellulose solution. The invention dissolves a large amount of cellulose into the urea and sodium hydroxide water solution in a slow cooling mode, thereby preparing the cellulose solution with the concentration of 3-20%. The raw materials used in the method are cheap and nontoxic; the concentration of the cellulose solution prepared by the method far exceeds the prior art, and the whole process has the advantages of simplicity, low cost, low energy consumption and low carbon emission. |
| priorityDate | 2018-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.