http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SE-8204379-D0
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_79cbb9f87b30f4e71aae70684a99180e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C3-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C3-003 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-18 |
| filingDate | 1982-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7dc4ecba4e2b92647f530dfc9c103a6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_56167a955bae820abf6fd880524e8c69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f6af38d81c8b15c7b833b7ef8e36cbd0 |
| publicationDate | 1982-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SE-8204379-D0 |
| titleOfInvention | PROCEDURES FOR RECOVERY OF CELL SUBSTANCES WITH NEDRIGEM EQUALITY |
| abstract | In a method of producing celluloses with low lignin contents, lignin substances are extracted from cellulose-con-taining vegetable material at an elevated temperature and an elevated pressure with aqueous organic solvents and, if desired, the celluloses are bleached. In order to obtain a cellulose by using solvents recoverable by distillation, which cellulose is further processable into an easily filterable viscose, the extraction is carried out in at least two steps. The crude cellulose resulting from the first extraction step is post-extracted in a further extraction step at a temperature lower than in the first extraction step with a medium having a swelling effect on the cellulose and dissolving lignin or lignin particles. The medium may be dimethylformamide, dimethylsulfoxide, phenol, dioxan, methanol/benzene, ethanol/benzene, ethanol/ammonia, phenol/water or mixtures thereof. |
| priorityDate | 1981-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.