http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20050007603-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/C07C31-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-149 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-132 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-149 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-20 |
| filingDate | 2003-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_56dbaf45400e4688805e38d614844ac5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25c5acb25cda8518b7de3e906235772b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69c2cb5be0b496ad8971452c2cd71ab3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_887de63f6f3eac90ac5299791115d178 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac35a468f3a40f6346053e60dac624cd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e919bc6f0753fd94bdcadb2d205a4d8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_654c78cbb895167ecc5dc765c20e0cba http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_437b3a36e2320cd1d59bd1fa23c46a70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_860ae93f847b31d9c8671ab1866dbbb5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d31a23160581ae1185bc2c6c5d29ead4 |
| publicationDate | 2005-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20050007603-A |
| titleOfInvention | Two-stage method for producing butane diol with intermediate separation of succinic anhydride |
| abstract | The present invention relates to a process for two-step catalytic hydrogenation of C 4 -dicarboxylic acid and / or derivatives thereof in the gas phase to produce optionally alkyl-substituted 1,4-butanediol. The process comprises (a) introducing a gaseous stream of C 4 -dicarboxylic acid or derivative thereof into the first reactor at 200 to 300 ° C. and 2 to 60 bar and catalytic gas phase hydrogenation, optionally alkyl-substituted γ-butyrol Producing a product comprising lactone, (b) separating succinic anhydride from the product obtained in step (a), preferably achieving a residual amount of about 0.3 to 0.2% by weight, and (c) obtaining in step (b) The product stream is introduced into a second reactor at a temperature of 150-240 ° C. and a pressure of 15-100 bar to catalyze gas phase hydrogenation to obtain optionally alkyl-substituted 1,4-butanediol, (d) the desired product as an intermediate, Separating from the by-product and any unconverted reactants, and (e) optionally recycling the unconverted intermediate product to one or both of the hydrogenation steps, wherein ≦ 95% by weight, preferably 5-9 A catalyst comprising 5% by weight, in particular 10-80% by weight of CuO and ≧ 5% by weight, preferably 5 to 95% by weight, in particular 20 to 90% by weight of oxidizing support, is used in each hydrogenation step and the second The pressure of the reactor is higher than the first reactor. |
| priorityDate | 2002-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 114.