http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SU-1730300-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3f5cb2f67e7341d0ec9b204fdd85dfd6 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-06 |
| filingDate | 1990-02-15^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1992-04-30^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_74be8ca4700c096d15a620f421e3d433 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd4e1c1934fcec51a768a101807a01a4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e23316af581c740f21b5494e1a1d31a3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60de65f11f84b4b2400cba0bf1e8148c |
| publicationDate | 1992-04-30^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SU-1730300-A1 |
| titleOfInvention | Method of producing cellulose |
| abstract | The invention relates to the technology of producing cellulosic semi-finished products and allows improving the physicomechanical properties of cellulose and increasing the content of reducing substances in the final spent liquor. The wood chips are varied in two steps with the removal of spent liquor after each of them. The first stage cooking is carried out with an aqueous solution of sodium pyrosulfite with an S02 content of 2.2-2.4% in it at a temperature of 135-140 ° C for 1.5-2.0 hours. The second stage of cooking is carried out 2.8-3.0% aqueous solution of sulfur dioxide at a temperature of 135-140 ° C for 2.0-2.5 hours. 1 s. f-ly, 1 tab. |
| priorityDate | 1990-02-15^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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