http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H072767-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D207-448 |
| filingDate | 1993-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_57655c763cdadc98f18565ed47f87647 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_19dcc63535ff13af9e80ff85e151d60d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_05b51856235388dcac1badb2610745fc |
| publicationDate | 1995-01-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H072767-A |
| titleOfInvention | Method for producing maleimide |
| abstract | (57) [Summary] [Structure] Aromatic polyamine 1 selected from other aromatic ether diamines and aromatic oligoamines per 100 parts by weight of 2,2-bis [4- (4-aminophenoxy) phenyl] propane. ~ 30 parts by weight of an aromatic polyamine mixture and maleic anhydride are subjected to an addition reaction in a mixed solvent of an aromatic hydrocarbon solvent and an aprotic polar solvent to obtain polymaleamic acid, and then dehydrated in the presence of an acid catalyst. The ring-closing reaction is carried out to azeotropically remove the by-product water with the aromatic hydrocarbon solvent, A method for producing maleimide, characterized in that the obtained reaction liquid is cooled to precipitate and separate maleimide. [Effect] 2,2-bis [4- (4-maleimidophenoxy) phenyl] propane has characteristics such as original toughness, an acid value of 5 (mg-KOH / g) or less, and a melting point of 80 to 12 A mixed polymaleimide having a high purity of 0 ° C. and a low melting point and containing no solvent is obtained. |
| priorityDate | 1993-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 84.