http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003517028-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-177 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D315-00 |
| 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/C07D315-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-33 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-20 |
| filingDate | 2000-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2003-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2003517028-A |
| titleOfInvention | Method for simultaneously producing aliphatic diol and cyclic ether |
| abstract | (57) [Summary]nBy hydrogenating an aliphatic diester or lactone feed such as dimethyl maleate or diethyl maleate containing a small amount of an acidic material such as a monoester, the diol product (eg, butane-1,4-diol) and A method for co-producing a cyclic ether (eg, tetrahydrofuran) is described. It utilizes a plurality of hydrogenation zones (8, 9, 10) connected in series, each containing a packing (12, 17, 24) of granular ester hydrogenation catalyst. The first hydrogenation zone (8) comprises a bed (12) of a catalyst (eg, reduced copper chromite) that is resistant to small amounts of acidic materials, and the second hydrogenation zone (9) comprises a first hydrogenation zone. Includes a bed of catalyst (17) that provides the cyclic ether in higher yield compared to the catalyst of (8). The third hydrogenation zone (10) includes a bed of catalyst (24) that exhibits low selectivity for the conversion of the diester to at least one by-product (e.g., 2,4'-hydroxybutoxy-tetrahydrofuran). The feed is supplied to the first hydrogenation zone (8) as a vapor stream comprising hydrogen and a hydrogenatable material, the zones (8, 9, 10) typically operating under adiabatic conditions. From the third hydrogenation zone (10), a final product stream substantially free of hydrogenatable materials and containing diols, cyclic ethers and other by-products is recovered, but the selectivity to cyclic ethers is reduced. , Higher in the final product stream than in the first intermediate product stream. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013032349-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008514684-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-7175879-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2019534778-A |
| priorityDate | 1999-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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