http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004131721-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 |
| filingDate | 2003-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14dfb21a665c36d6815695d2f9d59cce http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb0df97b2a141eb8a022d87a2ecaea51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25898d5e73b2f0eb42d6ef2f2cd4af24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_031f5abd443342da1b12af7cc78b785e |
| publicationDate | 2004-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2004131721-A |
| titleOfInvention | Polyester production method |
| abstract | PROBLEM TO BE SOLVED: To provide a method for producing a polyester of stable quality and a method for producing a polyester with significantly reduced environmental load. SOLUTION: Using an ejector, a condenser installed downstream of the ejector, and a reactor equipped with a hot well tank connected to the condenser via an atmospheric leg, mainly using a 1,4-butanediol component. The ejector is driven by the steam, and the steam mainly containing 1,4-butanediol discharged from the ejector is condensed by a condenser installed in the downstream portion of the ejector, and the polycondensation reaction is performed in a reduced pressure state of the reactor. A method for producing a polyester, wherein the concentration of tetrahydrofuran contained in a sealing solution of a hot well tank is 4% by weight or less. [Selection diagram] Fig. 1 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009286846-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014073589-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4670901-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013015290-A1 |
| priorityDate | 2002-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.