http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105037161-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-303 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-75 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-303 |
| filingDate | 2015-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105037161-B |
| titleOfInvention | Continuous synthesis method of cyclohexane polyacid ester |
| abstract | The invention relates to a synthesis method of cyclohexane polyacid ester. The method specifically comprises the following steps of: adding benzene polycarboxylic acid or anhydride thereof and alcohol into a stirring tank reactor; adding in an acid catalyst and raising the temperature to 200-240 DEG C; carrying out some reaction until an acid value is less than 0.2 mg KOH/g; directly adding a crude product resulting from the esterification reaction into a trickle bed reactor for hydrogenation reaction, wherein the hydrogen pressure is 40-100 bar, the temperature is 70-250 DEG C, and a catalyst is a porous oxide loaded with VIII B group metal; and after the reaction, adding in alkali for neutralization and acid removal, performing distillation or evaporation to remove alcohol, removing by-products; and performing filtration and deliming to obtain cyclohexane polyacid ester. According to the method provided by the invention, after the esterification reaction generates the crude product, no purification step is not performed; excess alcohol is used as a solvent for subsequent hydrogenation reaction; and after the hydrogenation reaction, purification steps such as alcohol removing, acid removing and filtration are performed, thereby saving time and energy. Meanwhile, according to the method provided by the invention, the alumina-magnesia composite oxide is used as the catalyst carrier, and palladium or ruthenium is selected as the metal catalyst, enabling the phenyl ring hydrogenation rate to be greater than 99.9%. |
| priorityDate | 2015-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 81.