http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101180341-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_753b126f9228af4276b6dcd8b086df5f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-367 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-672 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C59-70 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-367 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-672 |
| filingDate | 2006-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d548c3748c256fbbee9abca87d54690 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6f51d22c9b179ce390c61d6814fa4d41 |
| publicationDate | 2013-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-101180341-B |
| titleOfInvention | Process for making phenylene dioxydiacetic acid and use thereof |
| abstract | A process for making phenylene dioxydiacetic acid comprises (a) contacting a dihydroxybenzene under reaction conditions with a salt of haloacetic acid in a solution without adding a haloacetic acid to produce a salt of phenylene dioxydiacetic acid; and (b) optionally converting the salt of phenylene dioxydiacetic acid to free phenylene dioxydiacetic acid. In some embodiments, 1,3-phenylene dioxydiacetic acid (RDOA) is made by reacting resorcinol with sodium chloroacetic acid in a reaction mixture with a pH in the range of about 7 to about 11 and at a temperature from about 70 DEG C to 105 DEG C By adjusting the reactions conditions, a relatively high yield of 1,3-phenylene dioxydiacetic acid (i.e., greater than 80%) is obtained. The purified acid can be used in the synthesis of polyester, such as polyethylene terephthalate. |
| priorityDate | 2005-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 85.