http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-444007-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C31-207 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-149 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-33 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D315-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-33 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-149 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-17 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D315-00 |
| filingDate | 1998-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f5d75ebed2e5538235459eebb5efbac http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b2a15a539e21ef4581dc6cb7d98082ca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eee8c8061a036c93dba8cac2fa2f5046 |
| publicationDate | 2001-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-444007-B |
| titleOfInvention | Process for the production of at least one C4 compound selected from butane-1,4-diol, γ-butyrolactone and tetrahydrofuran |
| abstract | A process is described for the production of at least one C4 compound selected from butane-1,4-diol, γ-butyrolactone and tetrahydrofuran. A vaporous stream containing maleic anhydride vapour, water vapour, and carbon oxides is contacted in an absorption zone with a high boiling ester as solvent thereby to form a solution of maleic anhydride in the high boiling ester. The high boiling ester has a boiling point at atmospheric pressure which is at least about 30 DEG C higher than that of the di-(C1 to C4 alkyl) maleate and is selected from di-(C1 to C4 alkyl) esters of alkyl dicarboxylic acids containing up to 13 carbon atoms, mono- and di-(C10 to C18 alkyl) esters of maleic acid, fumaric acid, succinic acid, and mixtures thereof, (C<1> to C<4> alkyl) esters of naphthalene-monocarboxylic acids, tri-(C1 to C4 alkyl) esters of aromatic tricarboxylic acids, and di-(C1 to C4 alkyl) esters of isophthalic acid. A waste gas stream is recovered from the absorption zone. Maleic anhydride in the solution of maleic anhydride is reacted under esterification conditions in an esterification zone with a C1 to C4 alkanol to form the corresponding di-(C1 to C4 alkyl) maleate. From the esterification zone there is recovered a solution of the di-(C1 to C4 alkyl) maleate in the high boiling ester which is then contacted with a gaseous stream containing hydrogen in order to strip di-(C1 to C4 alkyl) maleate therefrom and to form a vaporous stream comprising hydrogen and di-(C1 to C4 alkyl) maleate. Material of this vaporous stream is contacted in a hydrogenation zone under ester hydrogenation conditions with a heterogeneous ester hydrogenation catalyst thereby to convert di-(C1 to C4 alkyl) maleate by hydrogenation to the at least one C4 compound which is or are then recovered. |
| priorityDate | 1997-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 135.