http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106831677-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-89 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-02 |
| filingDate | 2016-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106831677-B |
| titleOfInvention | A kind of preparation method of methyl hexahydrophthalic anhydride |
| abstract | A kind of novel preparation method of methyl hexahydrophthalic anhydride, belongs to technical field of chemical synthesis.It is using the purification methyl tetrahydro phthalic anhydride of non-isomerization as raw material, the raw material is added with agitating device, is built-in in the hydrogenator of catalyst bed, it is passed through hydrogen and carries out hydrogenation reaction, the thick methyl hexahydrophthalic anhydride obtained after adding hydrogen enters the separator with thin film evaporator and is evaporated under reduced pressure, obtain appearance be colorless and transparent, iodine number less than 1, acid value 660-670mgKOH/g, anhydride group content >=40.5%, free acid content 0.3%, purity >=99% methyl hexahydrophthalic anhydride.The present invention is by using above-mentioned technology, and catalyst activity is moderate, selectivity is good plus hydrogen is complete, and side reaction is few；Catalyst without separation process, loss less, recycle, without security risk and waste water, waste residue；The aftertreatment technology thermal efficiency is high, the residence time is short, and polymer is few, high income；Product purity height, acid value, anhydride group stable content, free acid is low, and color is good, improves the quality of product. |
| priorityDate | 2016-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.