http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1401875-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C11-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C13-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C1-00 |
| filingDate | 1972-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1975-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1401875-A |
| titleOfInvention | Production of pure conjugated c4 and c5 diolefins from hydrocarbon mixtures |
| abstract | 1401875 Extracting C 4 or C 5 conjugated diolefins BADISCHE ANILIN-& SODAFABRIK AG 24 Nov 1972 [26 Nov 1971] 54360/72 Heading C5E Pure C 4 or C 5 conjugated diolefins are separated from hydrocarbon mixtures by countercurrent gas scrubbing liquid-liquid extraction, extractive distillation and/or countercurrent distribution using as selective solvent a mixture of:- (a) 5-95 wt. per cent of an N-alkylpyrrolidone which may contain an inert substituent; and (b) 5-95 wt. per cent of an N-hydroxyalkyl compound of the general formula in which Y is C 2 or C 3 alkylene or alkenylene, or o-phenylene which may be wholly or partly hydrogenated R is a linear or branched alkylene and Z is oxygen or two hydrogens. The solvent mixture may contain up to 25 wt. per cent water. Preferred solvent components are (a) N-methylpyrrolidone; (b) N-hydroxyethylphthalimide, N-hydroxyethylsuccinimide and N-hydroxyethylpyrrolidone. The diolefins which may be separated by the process of the invention are butadiene, isoprene, 1,3-pentadiene and cyclopentadiene. |
| priorityDate | 1971-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.