http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0723955-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_38a0ecf90a4ec02af686213ff43d2a9e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C267-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C267-00 |
| filingDate | 1996-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_36d513ec81de1bfc0e120724f5d0c40b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e2f629360df184fb83580249e91b39d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce58fcdb5d0204f8830917fcf741e3ad |
| publicationDate | 1999-10-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0723955-B1 |
| titleOfInvention | Process for the preparation of substituted carbodiimides |
| abstract | Prepn. of a disubstituted carbodiimide (I) comprises phosgenating an N,N'-disubstituted urea deriv. (II) in an organic solvent and then adding ammonia, without having previously isolated the intermediate. Phosgenation involves treating a soln. or suspension of (II) in an organic solvent (pref. a dialkyl ether) with COCl2 over a period of at least 3 hrs. at 15-25 degrees C, then degassing the reaction mixt. with an inert gas or under reduced pressure, at 3-10 degrees C below the b.pt. of the solvent at atmospheric pressure, but not above 70 degrees C. (II) is pref. N,N'-dicyclohexylurea and the solvent is a dialkyl ether. |
| priorityDate | 1995-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.