http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102477021-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dcd257de25f3b17fe3b7c49ad16dbe8a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-09 |
| filingDate | 2010-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90402ca252aa6c9bbc08a86fc9e2844b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c2c2c90617b5ae56641348f590cffe9 |
| publicationDate | 2015-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102477021-B |
| titleOfInvention | Preparation method of di(4-trimellitic anhydride) glycol ester |
| abstract | The invention relates to a preparation method of di(4-trimellitic anhydride)glycol ester, which employs a metal acetate/p-benzene-sulfonate composite catalyst, the amount of the composite catalyst accounts for 0.25-1.5mole% of amount of trimellitic anhydride. The mol ratio of metal acetate to p-benzene-sulfonate is 60-80mole%: 40-20mole%. The trimellitic anhydride and ethylene glycol diacetate are reacted under existence of the above composite catalyst for 4-5 hours at the temperature of 160-260 DEG C, and reacted at the temperature of 270 DEG C under the vacuum condition for 1-1.5 hours to prepare di(4-trimellitic anhydride) glycol ester with purity greater than or equal to 99%, the melting point is 176 DEG C to 178 DEG C, and the yield of the fine product is 67-68.5%. |
| priorityDate | 2010-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.