http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6146858-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bb91312cd7a0e73018c30ce85822752f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P19-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P19-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B11-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B11-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B1-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12S3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P19-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B1-06 |
| filingDate | 1998-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2000-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0b84ab294cd7d39466ea11e4ae3bd5af http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f8ce3e3448e6d852ab82bf294459f312 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_adcbdb5cc729c4f67d8b16eca9888226 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_882304714dc234e271c1c4f2c0bf5997 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ade5c0bbe3d2b5258aa0e9a5171215ad http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a350bbf5f51450f10ea74f48d0fbd90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_504f4d548b4c5116e8881b7719bf97a5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22a55359f17152d5cd171f4faec1b4d0 |
| publicationDate | 2000-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6146858-A |
| titleOfInvention | Method for producing cellulose derivatives |
| abstract | PCT No. PCT/EP98/03907 Sec. 371 Date Feb. 14, 2000 Sec. 102(e) Date Feb. 14, 2000 PCT Filed Jun. 26, 1998 PCT Pub. No. WO99/02568 PCT Pub. Date Jan. 21, 1999Samples of commercial cellulose having high crystallinity (>80%) and a degree of polymerization of approximately 1500 were pretreated enzymatically under various conditions with commercial endoglucanases, before the chemical conversion to substituted cellulose derivatives was carried out. The enzymatically pretreated cellulose samples exhibited a significantly higher substitution, up to 222% higher, in comparison with control samples which had been treated with buffer without enzyme. The increase in substitution during the chemical reaction could be observed in the presence of various amounts of alkali, but fell as the amounts of alkali decreased. At the same degree of substitution of the cellulose derivative, the use of cellulose pretreated with endoglucanase significantly reduced the amount of alkali required by 60%, as compared with the use of cellulose pretreated only with buffer. Furthermore, by reducing the amount of water used in the reaction mixture in the chemical reaction, it was possible further to increase the substitution of enzymatically pretreated cellulose. |
| priorityDate | 1997-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 105.