http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004155685-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e79b36d234409c330a83cf7956fb4e10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-18 |
| filingDate | 2002-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ecbbe66f24f82621b64b7eb6f6789cab |
| publicationDate | 2004-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2004155685-A |
| titleOfInvention | Method for producing diphenylmethane diisocyanate-based polyisocyanate having reduced color number |
| abstract | A polyisocyanate having a reduced color number is provided. A method for producing a polyisocyanate, which comprises reacting phosgene with a polyamine obtained by polycondensing aniline and formaldehyde, comprises the following steps (a) to (d): Solved by the method. (A) A step of reacting polyamine and phosgene in a solvent. (A) A step of adding an active hydrogen compound (B) having an average molecular weight of 32 to 10,000 to the reaction solution after the completion of the phosgenation to cause a reaction. (C) A step of adding and treating an acidic substance (C) having a pKa <6. (D) A step of completely removing the solvent at the time of phosgenation. [Selection diagram] None |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011501687-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2015077595-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010120870-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010058647-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105924370-A |
| priorityDate | 2002-11-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 125.