http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102531994-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bb0d5d3db9492571690fc9d9a06191c8 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-448 |
| filingDate | 2011-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94425f901b68f26c9dcefaa499c7c727 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a195f0019467f8a914c56683d72ff942 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_722a5926a2d09426dec8475a01db7f18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28b78eabcfbc35e0fbdcc935c76e9e70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_786369d43e5a6514f915f88e0bc55c9b |
| publicationDate | 2014-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102531994-B |
| titleOfInvention | Method for synthesizing bismaleimide |
| abstract | The invention discloses a method for synthesizing bismaleimide, and the method comprises the following steps of: (1), taking dibasic primary amine and maleic anhydride to mix and put in a 100 ml of three-mouth round bottom flask with an agitating and refluxing device, adding a proper amount of organic solvent and a proper amount of catalyst, radiating for 1-12 minutes by adopting 50-90 watts of microwaves, agitating, and reacting in a refluxing state to obtain bimaleamic acid; and (2), adding a dehydrating agent and hydrophilic resin with a weight of 1-6% of that of the maleic anhydride to the bimaleamic acid to react, radiating for 1-8 minutes by adopting 40-70 watts of microwaves, and separating to obtain the bismaleimide. By using the method, in the synthesis of the bimaleamic acid and in the closed-loop dehydration reaction of the bimaleamic acid, the energy is provided by adopting microwave radiation; the reaction time is shortened; the reaction time is controlled within 12 minutes; on the premise that the dehydrating agent is added in the closed-loop dehydration reaction of the bimaleamic acid, the hydrophilic resin is added again; the moisture generated in the closed-loop reaction is absorbed in time; the consumption of the solvent and the energy is reduced; the synthetic efficiency of the bismaleimide is improved; and the yield of the bismaleimide is improved simultaneously. |
| priorityDate | 2011-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.