| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C5-005 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-144
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-1057 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C5-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-10 |
| filingDate |
2002-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_792ed58470ee1e09144359a2b2eeb2e7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba1d66567c604631b992064a0ddc67cb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f26a059ca1f4b1738ed62fff273fc218 |
| publicationDate |
2004-04-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2004077071-A1 |
| titleOfInvention |
Methods of xylanase treatment in bleaching |
| abstract |
The present invention discloses methods of bleaching chemical pulp with xylanase after chemical bleaching. The method comprises the steps of treating chemical pulp with a first xylanase in a first enzyme treatment stage to produce an enzyme treated pulp, exposing the enzyme treated pulp to a chemical bleaching stage to produce a partially bleached pulp, and treating the partially bleached pulp with a second xylanase in a second enzyme treatment stage at a pH of about 3 to about 8. Further, there is disclosed a method of bleaching pulp comprising the steps of exposing chemical pulp to a chlorine dioxide bleaching stage to produce a partially bleached pulp, treating the partially bleached pulp with a xylanase in an enzyme treatment stage at a pH of about 3 to about 8, then carrying out an alkaline extraction of the pulp. The pulp bleaching method of the present invention may be performed in a pulp mill as part of a complex pulp bleaching process. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9765319-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7547534-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7504120-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7368036-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006003433-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005150619-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105200836-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008248160-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009155238-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-RE45660-E
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8728769-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104088185-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011108222-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004112555-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008190573-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8043839-B2 |
| priorityDate |
2001-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |