http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2022152421-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fec576c38e34882531ca37d6b922bf42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G69-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C215-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-22 |
| filingDate | 2021-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e08f38da1b2b56455414477961e99650 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b1abab99ad6295a03bd45bb4b4e2fa4f |
| publicationDate | 2022-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2022152421-A |
| titleOfInvention | Method for producing 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane, method for producing 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane, polyamide polymer and polybenzoxazole manufacturing method |
| abstract | Kind Code: A1 A method for producing 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane capable of reducing the amount of impurities is provided. A solution preparation step of preparing a uniform solution in which 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane (compound 1) containing impurities is dissolved in a solvent; In the production method including a recrystallization step of recrystallizing Compound 1 to obtain a powder of Compound 1, the solvent includes at least the following first solvent and second solvent. First solvent: the solubility of compound 1 at 23° C. is 0.05 to 3.0 g [g/10 g], and the solubility of compound 1 at 80° C. is 0.2 to 6.0 g [g/10 g] ] solvent. Second solvent: The solubility of the compound represented by formula (2) at 23°C is 2.6 [g/10g] or more, and/or the solubility of the compound represented by formula (3) at 23°C is A solvent that is 2.2 [g/10 g] or more. [Selection figure] None |
| priorityDate | 2021-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.