http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2025479-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C263-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C263-14 |
| filingDate | 1970-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1971-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2025479-A1 |
| titleOfInvention | Aromatic isocyanates prodn - from aromatic nitro cpds - with carbon monoxide and metal catalysts |
| abstract | Aromatic nitro cpds. (is not C20) are reacted with CO at increased temp. and pressure in the presence of 0.01-50% of a catalyst consisting of (a) Si, Ge, Ti, Mo, Cr, W, V, Mn, Co or Ni or mixtures or (b) at least one chloride, bromide, iodide, nitrate, sulphide or sulphate of these metals. Pref. process uses 0.1-4% catalyst such as cobalt iodide or titanium tetrachloride in the presence of pref. 0.1-10 moles of SO2/mole aromatic nitro cpd. Pref. reaction is for 30 mins. to 4 hrs. at 150-215 degrees C. and 7-350 kg./cm2. pressure. The pref. mole-ratio Co:nitro group is 0.3 : 1 to 20 : 1. The aromatic isocyanates are used as intermediates in the prepn. of urethane foams and - coverings, insecticides, pesticides etc. |
| priorityDate | 1970-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 204.