http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1264846-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f000fefffa3808853388291a30640521 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B15-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21H11-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-002 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B15-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H11-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21H13-04 |
| filingDate | 2002-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4d07ea02b755e664e6997433469d0dd4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c7586bd41f4c670bf089b7451bab94a7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a5e19196295b67b30b3439e6778c1bf |
| publicationDate | 2002-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1264846-A1 |
| titleOfInvention | Method for preparation of stabilized carboxylated cellulose |
| abstract | The invention is directed to a method of making a heat and light stablencarboxylated cellulose fiber whose fiber strength and degree of polymerization is notnsignificantly sacrificed. The method involves the use of a catalytic amount of a hinderedncyclic oxammonium salt as a primary oxidant and a peracid and halide salt as ansecondary oxidant in an aqueous environment. The oxammonium compounds may benformed in situ from their corresponding amine, hydroxylamine, and nitroxyl compounds.nThe oxidized cellulose is then stabilized against D.P. loss and color reversionnby further treatment with an oxidant such as sodium chlorite, a chlorine dioxide/hydrogennperoxide mixture, or a peracid under acidic conditions. Alternatively itnmay be treated with a reducing agent such as sodium borohydride. The method resultsnin a high percentage of carboxyl groups located at the fiber surface. The product is especiallynuseful as a papermaking fiber where it contributes strength and has a highernattraction for cationic additives. The product is also useful as an additive to recyclednfiber to increase strength. The method can be used to improve properties of either virginnor recycled fiber. It does not require high α-cellulose fiber but is suitable for regularnmarket pulps. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10907304-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2840182-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3575489-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11332886-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11613849-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1505199-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102482842-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9410285-B2 |
| priorityDate | 2001-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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