http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H06280177-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e646935c87c248f48d871005126f8638 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_188f4135eaac0734094690a25ddbc013 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-147 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-10 |
| filingDate | 1993-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ba5c144da0486eaa6864ff21be9af2e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9c92c1c49c86ad1b802aeb3a4d03307c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_583d1fe14879ddfd55848f15b37cce06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_88f5dceac60775d95dbf721e2d5a298d |
| publicationDate | 1994-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H06280177-A |
| titleOfInvention | How to bleach alkaline pulp |
| abstract | (57) [Summary] [Structure] The alkaline pulp is adjusted to pH 1.0 with an inorganic acid. 0.1 to 1% and 0.5 to pulp, preferably as nitrite and nitrate ions, in an acidic treatment liquor of 1.6. A method for bleaching alkaline pulp, in which -5% is added, and heat treatment is carried out in the range of 80 ° C to the boiling temperature of the treatment liquid, followed by alkali extraction treatment of lignin. [Effect] The method of combining acid heat treatment with optimized pH and temperature conditions and alkali extraction treatment gives a delignification effect equivalent to that of oxygen bleaching to alkali pulp. Therefore, since the pressure vessel required for oxygen bleaching is not required, the cost is reduced and the application is facilitated. further, The method of adding nitrite and nitrate to the acid heat treatment followed by alkali extraction makes the delignification even better, can completely replace the conventional chlorine-alkali extraction treatment, and significantly reduces environmental problems. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4641629-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002227083-A |
| priorityDate | 1993-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.