http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2714799-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C255-00 |
| filingDate | 1977-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_023aa5b5c17c9cb660e8c9d129086a54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33a424f64bdb5df5c36b6379b478a90b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce72e59844d1cd29b60c43a705408b74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76437ff9f4f09cece0218bc26f39cce5 |
| publicationDate | 1978-10-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2714799-A1 |
| titleOfInvention | PROCESS FOR THE PRODUCTION OF 1,4-DICYANE BUTEN |
| abstract | (I), prepn. by reaching butenediol esters, (II), with at least equiv. quantities of HCN at 60-160 degrees C., takes place in aq. solns. of CuBr contg. alkali bromide, under pressures >=2 (pref. 2-20) bar. Mol. ratio CuBr to (II) is (0.3-0.6) : 1. The alkali bromide is esp. NaBr. The aq. solns. pref. also contain NH4Br and up to 10 wt.% HBr. (I) can be hydrogenated to hexamethylene diamine, used in polyamide prodn. On replacing previously used CuCl + alkali halide by CuBr + alkali bromide, yields of (I) can be increased, e.g. from 30% to >80%. Process can be effected economically on a large scale. Aq. solns. are handled more easily than fused salts. (I) is easily separated. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5463103-A |
| priorityDate | 1977-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.