http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2382592-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fe7d513beeca5d7ccf2650132d8c493c |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-153 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D21C9-002 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-153 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D21C9-00 |
| filingDate | 2001-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2119a78c09ba8cdfe35e67b1e08676c6 |
| publicationDate | 2003-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2382592-A |
| titleOfInvention | Use of ozone to enhance the wet strength of fibrous cellulosic material |
| abstract | The wet strength of a fibrous cellulosic material is enhanced by the use of a treatment sequence which comprises ozonation of a fibrous cellulosic material under acidic conditions followed by an acidic wash of the ozonated material. The ozone treatment is preferably preceded by a further acidic wash. A second ozonation step may follow the acidic wash. Preferably after the last ozonation step the acidic conditions are maintained, and preferably at no point in time is an alkaline wash used. It is preferred that the entire sequence is carried out under acidic conditions. The fibrous cellulosic material may be selected from the group which includes sulfite pulps, bisulfite pulps, Kraft pulps or cotton linters. Other fibres are also disclosed. The initial kappa value of the selected cellulosic fibrous material is preferably less than 50, and the final kappa value is preferably less than 15. A process for the treatment of a fibrous cellulosic material, and a material obtained by such a process are also disclosed. The use of ozone avoids the use of non-process elements, e.g. MgO, which are frequently used in oxidation treatments of pulps. |
| priorityDate | 2001-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.