http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104497151-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B15-06 |
| filingDate | 2015-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104497151-B |
| titleOfInvention | A kind of method of the urea-modified cellulose of no coupling product |
| abstract | The method that the invention discloses the urea-modified cellulose of a kind of no coupling product.The method first passes through urea liquid dipping cellulose or uses the mode of molten state carbamide spray cellulose to prepare cellulose/urea admixture, and wherein urea content is low, and the mass ratio of cellulose and carbamide is 1:0.01 ~ 1:0.1；Then heat this cellulose/urea admixture at 140 ~ 200 ° of C and prepare cellulose carbamate product, without by-products such as Carbimide., biuret and isocyanide acid amides in this product, just, in the combination water solvent can well being dissolved in sodium hydrate aqueous solution without washing or be made up of sodium hydroxide and zinc oxide, transparent cellulose carbamate solution is obtained.The present invention provides the new method of the urea-modified cellulose of a kind of no coupling product, and carbamide usage amount is few, without side reaction and the generation of cross-linking reaction in course of reaction, eliminate the washing link of product, whole building-up process step is succinct, low cost, and economy is green and is prone to industrializing implementation. |
| priorityDate | 2015-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.