http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02134355-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2f8cfa5aee4410611b5c562275c9f8e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C265-14 |
| filingDate | 1988-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eddbe55d886f9967fb274f0f4003b03e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_725664bd9353c603e7616de60e0f8d1c |
| publicationDate | 1990-05-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H02134355-A |
| titleOfInvention | Production of diisocyanate |
| abstract | PURPOSE:To enable economical production of the compound which is used as a starting substance for polyurethane or the like without use of phosgen by pyrolyzing a urethane compound in a solvent of a high boiling point in the presence of a catalyst. CONSTITUTION:A urethane compound is pyrolyzed in a high-boiling solvent such as m-terphenyl in the presence of a metal or metal compound catalyst selected from Mn, Mo, W, and Zn at 150 to 300 deg.C under a reduced pressure of 1 to 700Torr. At that time, the catalyst is mixed with methanol and the objective diisocyanate and fed con-tinuously to the column zone in the reactive distillation column. The amount of the catalyst is preferably in the range from 0.005 to 5wt.% based on the solvent, and the methanol is 0.2 to 1,000 fold weight of the catalyst, while the diisocyanate is 0.001 to 1,000 fold weight of the methanol. |
| priorityDate | 1988-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.