http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5783525-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_129e393582e6bdf4029baf2206522f45 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L59-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate | 1980-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f52d743b48793e3ab2bb2dd8a6cb41a7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_87fbeb1e75b563839746443406a4f170 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f539b630bdcca9f420b1c2f44a8f8cbf |
| publicationDate | 1982-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5783525-A |
| titleOfInvention | Preparation of polyester |
| abstract | PURPOSE: To obtain a polyester providing a film, etc. having improved surface properties, containing a large amount of uniform and fine particles, by adding respectively specific amounts of Ca-, Li-, and phosphorus compounds successively to a reaction system at a specific period of the last period of an esterification. n CONSTITUTION: At a time when an esterification ratio of the direct esterification of (A) terephthalic acid with (B) ethylene glycol reaches 91W99%, (C) a calcium compound (e.g., calcium acetate, etc.) and (D) a lithium compound (e.g., lithium acetate, etc.) preferably as a blend in amounts to satisfy the formulasIand II (Li and Ca are mol% of component C and D to component A respectively) are added to a reaction system and dispersed uniformly, and (D) a phosphorus compound (preferably methyl phosphate, etc.) in an amount to satisfy the formula III, so that polycondensation is carried out, to give the desired polyester. n COPYRIGHT: (C)1982,JPO&Japio |
| priorityDate | 1980-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.