| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7fb0bb1d6ec62d8b5280c216bf0ccbbc |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-298 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-142
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J20-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-163
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-004
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B15-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C3-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B15-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H11-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-147 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-147
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C3-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H11-20 |
| filingDate |
2015-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a5970effef8777864baa61cdb4715678
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea4d6c77b7086481a3c0a54aa5a7af28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cc0439ad2ee902181a41e17ddf43b67d |
| publicationDate |
2015-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2941737-A1 |
| titleOfInvention |
A low viscosity kraft fiber having an enhanced carboxyl content and methods of making and using the same |
| abstract |
A method of making an oxidized acid-treated kraft fiber is provided. The method includes subjecting cellulose fiber to a kraft pulping step; oxygen delignifying the cellulose fiber following the kraft pulping step; and bleaching the cellulose fiber following oxygen delignification using a multi-stage bleaching process. The method also includes oxidizing the cellulose fiber with a peroxide and a catalyst under acidic conditions in at least one stage of the multi-stage bleaching process, treating the fiber with a carboxylating acid comprising the addition of a combination of either sodium chlorite and hydrogen peroxide or chlorine dioxide and hydrogen peroxide in at least one stage of the multi-stage bleaching process prier to at least one oxidation stage of the multi-stage bleaching process; and treating the fiber with the carboxylating acid in at least one stage of the multi-stage bleaching process following the at least one oxidation stage. |
| priorityDate |
2013-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |