http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104829457-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0291 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08 |
| filingDate | 2015-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104829457-B |
| titleOfInvention | Method for Bronsted-Lewis acidic ionic liquid catalyzed synthesis of di(glycol monoalkyl ether)terephthalate |
| abstract | The invention discloses a method for Bronsted-Lewis acidic ionic liquid catalyzed synthesis of di(glycol monoalkyl ether)terephthalate. The method is characterized in that raw materials comprising terephthalic acid and glycol monoalkyl ether undergo a direct esterification process under the action of an ionic liquid catalyst [Py-(CH2)3-SO3H]Cl-xSnCl2 and a dehydrating agent n-butyl ether to obtain di(glycol monoalkyl ether)terephthalate; the use amount of [Py-(CH2)3-SO3H]Cl-xSnCl2 is 1-10% of the mass of terephthalic acid; a molar ratio of terephthalic acid to glycol monoalkyl ether is 1:2.1-3.0; the reaction temperature is 210-230DEG C; and the reaction time is 2-4h. The catalyst adopted in the synthetic method has the advantages of good activity, high stability, low corrosion to devices, filtration and separation of the catalyst from reaction products at normal temperature, and realization of multi-time cycle use. |
| priorityDate | 2015-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 61.