http://rdf.ncbi.nlm.nih.gov/pubchem/patent/AR-021215-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5bc5292a07e34d16eb1d033a16d3aec3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-31 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 |
| filingDate | 1999-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2002-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | AR-021215-A1 |
| titleOfInvention | A METHOD FOR PREPARING AND PURIFYING A LOW MOLECULAR WEIGHT POLYETHYLENE GLYCOLBOBOXYL ACID |
| abstract | A method for preparing low molecular weight polyethylene glycol carboxylic acids comprising reacting low molecular weight polyethylene glycols with monosubstituted aliphatic acid esters with a halogen in a base, and then saponifying the resulting intermediates. Then, polyethylene glycol carboxylic acids are extracted with an organic phase containing toluene to separate unreacted compounds and by-products. Then, the polyethylene glycol carboxylic acids extracted are acidified and purified by dialysis, gel filtration, or precipitation. |
| priorityDate | 1998-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID456922693 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID1140 |
Total number of triples: 16.