http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-200418558-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_79cbb9f87b30f4e71aae70684a99180e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2301-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-054 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2203-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-54 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 |
| filingDate | 2004-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c258f07cc985392fcf0f37f2599e6841 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_646aac01c06d1681eab170743556b933 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d8c1f77ef8d57892e91ac25c2824e786 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d1c6b1d58159f97dfbe43a66727d512c |
| publicationDate | 2004-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-200418558-A |
| titleOfInvention | Process for the production of a porous cellulosic body |
| abstract | The present invention relates to a process for the production of a porous cellulosic body, comprising the steps of: preparing a cellulose solution in a tertiary amine oxide, in particular N-methyl-morpholine-N-oxide, whereby the cellulose being used has an average degree of polymerization of from 150 to 2000 and whereby the solution exhibits a cellulose concentration of from 0.1 to 5% by weight; producing a body from the cellulose solution; precipitating the body in a precipitant, thereby obtaining a precipitated cellulosic body, whereby the precipitant is an aqueous medium or a water-miscible nonaqueous medium precipitating the cellulose, which nonaqueous medium can dissolve the tertiary amine oxide and is miscible with a supercritical solvent. The process according to the invention is characterized in that: in case an aqueous medium is used as the precipitant, tertiary amine oxide contained in the precipitated cellulosic body is washed out with the aqueous medium, the aqueous medium is replaced by a liquid exchange medium miscible with a supercritical solvent, the cellulosic body moist with the exchange medium is treated with the supercritical solvent, thereby obtaining the porous cellulosic body; or in case the nonaqueous medium is used as the precipitant, respectively, tertiary amine oxide contained in the precipitated cellulosic body is washed out with the nonaqueous medium, the cellulosic body moist with the nonaqueous medium is treated with the supercritical solvent, thereby obtaining the porous cellulosic body. |
| priorityDate | 2003-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.