| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d895f22a1ee4b1418102af7e493479d7 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-1057
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-163
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-153 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-153 |
| filingDate |
1993-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f149785872baf9f22e2a4174d6750f72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e236d58430d6585e765ef51d252a365
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12ff0c8e06b1407ac96a6e570eb56891
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7fa8c8759e54cdf04f6ed332da47a619
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c171d7b121f10bf0fd6e3d45160146f3 |
| publicationDate |
1994-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2149332-A1 |
| titleOfInvention |
Method of bleaching pulp |
| abstract |
The present invention relates to a method for bleaching pulp and especially to novel types of pro-environmental bleaching processes used in the wood-processing industry, in which methods the chlorine chemicals have been replaced by other bleaching chemicals involving discharges less harmful to the environment. It is a characteristic feature of the invention that bleaching comprises at least two peroxide stages between which stages the fibers are subjected to an activating treatment, for example, acidation or hot alkali extraction. |
| priorityDate |
1992-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |