http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H10176044-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03d0f52bb4069f8a19d70dcfb697c67a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-189 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 |
| filingDate | 1996-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1010d5472d7d480ac94de949ada0c757 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_56415ae86816eb2f6ea9c4480c047096 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_707d85d98b1af17c4def08b60dc6cdcc |
| publicationDate | 1998-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H10176044-A |
| titleOfInvention | Method for producing polyethylene naphthalate |
| abstract | PROBLEM TO BE SOLVED: To provide a method for producing polyethylene naphthalate for efficiently producing polyethylene naphthalate of uniform quality by simple process control. SOLUTION: When continuously producing polyethylene naphthalate by polycondensing a melt comprising an oligomer of bis (β-hydroxyethyl) naphthalate under vacuum, the melt viscosity of polyester taken out of a final reactor. To obtain a first deviation signal proportional to the magnitude of the difference between the value of the detected viscosity and the value of the set viscosity, and obtain a manipulated variable of the degree of vacuum based on this signal to adjust the degree of vacuum. The control process of the following, for the value of the viscosity detected from the second time onward, to obtain a first deviation signal proportional to the magnitude of the difference between the detected viscosity value and the value of the set viscosity, detection and this signal Obtaining a second deviation signal obtained by adding a time integral value of accumulated data of a difference from a set viscosity value, and performing a second control step of obtaining a manipulated variable of a vacuum degree based on this signal and adjusting the vacuum degree. Depending on the degree of polymerization Method for producing polyethylene naphthalate. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002080577-A |
| priorityDate | 1996-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 90.