http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S61266428-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate | 1985-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_82aa433bbf69e28e78398b3cdca0f14d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0b298e6743e5ec6002f2cc03937c534b |
| publicationDate | 1986-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S61266428-A |
| titleOfInvention | Production of polyester |
| abstract | PURPOSE: To decrease scale which deposits inside a polyester production apparatus, by irradiating the apparatus with ultrasonic waves during esterification or transesterification of a dicarboxylic acid with a glycol. n CONSTITUTION: In a process for producing a polyester by subjecting a dicarboxylic acid and/or its derivative and a glycol to esterification or transesterification and polycondensing the product, the reaction zone is irradiated with ultrasonic waves during, among all of the steps of this process, at least an esterification or transesterification step. Said irradiation with ultrasonic waves may be performed throughout the entire process of the polyester production process and, especially, it is preferable that such irradiation is performed during both of an esterification or transesterification step and a prepolymerization step. It is preferable to perform such irradiation continuously from the start of esterification or transesterification. As the ultrasonic waves for irradiation, those having a frequency of 10W200kHz and a power of 0.5W10kW are desirable. n COPYRIGHT: (C)1986,JPO&Japio |
| priorityDate | 1985-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID174 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID417430547 |
Total number of triples: 14.