| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af8b6d7724eca7acb201fe7490a9e4b5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a95f340fe08859f76fbf49cbec9f7e70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f4a7711656877c108fcffc1b2b52cfc4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_315eb7d772e798011f4765d15f1a9327
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b9cacf29c0aba13a8337b704a39d7854 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B11-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B11-193
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B11-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B11-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B11-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B37-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B11-00 |
| filingDate |
2004-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2012-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8be2890e357c106ce18d0d5e3ca8ccdf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3652546b6b30a2cb6f073540f31c4b40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_582ae36a182d270582ad36dc38b721c2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a630b3d7a2318a6a79abdaba1ab249e |
| publicationDate |
2012-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8093376-B2 |
| titleOfInvention |
Method for preparation of high enzymatic resistance hydroxyalkylcellulose derivatives |
| abstract |
The present invention relates to a process of preparing hydroxyalkyl cellulose derivatives having improved enzymatic resistance. In particular, the present invention relates to a process of preparing hydroxyalkyl cellulose derivatives by reacting cellulose and ethylene oxide in the presence of alkali metal hydroxide, wherein the reaction between cellulose and ethylene oxide is performed in the presence of isopropyl alcohol azeotropic solvent in a horizontally agitated reactor, wherein the ethylene oxide is supplied via two steps, thus resulting in a two-step reaction, and the amount of alkali metal hydroxide remaining after the first reaction is controlled, thereby enabling to provide hydroxyalkyl cellulose derivatives having improved enzymatic resistance and turbidity and to remarkably decrease the solvent usage to have economical and environmental advantages. |
| priorityDate |
2004-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |