http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-397848-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9b0f615b92cd3bb66e8ea41483a2dc63 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2696 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2663 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 |
| filingDate | 1998-09-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2000-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bce7bd6e5a1141cc0d87a0043599729e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_818b0cfc141b5fe0a2422691cb9a3a43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0222819c941e96897eb35a663a0385ca |
| publicationDate | 2000-07-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-397848-B |
| titleOfInvention | Direct polyoxyalkylation of glycerine with double metal cyanide catalysis |
| abstract | A process for the direct polyoxyalkylation of an acid sensitive low molecular weight starter in the presence of a double metal cyanide complex catalyst, said process comprising : (a) establishing oxyalkylation conditions in an oxyalkylation reactor in the presence of a double metal cyanide catalyst; (b) continuously introducing alkylene oxide and acid sensitive low molecular weight starter to said reactor; and (c) recovering an oxyalkylated low molecular weight starter polyether product; wherein deactivation of double metal cyanide catalyst is decreased by one or more of the steps of: (i) acidifying said acid sensitive low molecular weight starter prior to introducing said acid sensitive low molecular weight starter into said reactor; (ii) treating said acid sensitive low molecular weight starter with an effective amount of a base-reactive or base-absorptive substance other than an acid prior to introducing said acid sensitive low molecular weight starter into said reactor; (iii) adding an effective catalyst deactivation preventing amount of an acid to said reactor, said effective catalyst deactivation preventing amount of acid not contained in a feed stream containing acid sensitive low molecular weight starter. |
| priorityDate | 1997-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.