http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6243416-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_95136e4276343dbae035a63330dabfc7 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate | 1985-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f66a8bef851d21e0e7fbbde1c12580d3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45063f5855ad4c40286d2357280189a5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ab27c1dfb36c46ce0d438681c4ffb08 |
| publicationDate | 1987-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S6243416-A |
| titleOfInvention | Production of polyester |
| abstract | PURPOSE: To obtain a polyester suitable for fibers, films, etc., having improved transparency and color tone, by polymerizing a composition comprising bis(β- hydroxythyl)terephthalate (low polymer) as a main component by adding a specific polycondensation catalyst. n CONSTITUTION: (A) Terephthalic acid and ethylene glycol are directly esterified or subjected to ester exchange reaction to give bis(β-hyroxyethyl)terephthalate and/or its low polymer, (B) a compound shown by the formula I (n is 0 or 1) is added to the reaction system in such a way that the formulas T≥-1.7S 1 +5.5, T≤-3.3S 1 +14.7, T≥3 and S 1 ≤0.3 are satisfied when T is polymerization time and S 1 is an added amount (mol/mol acid component) or (ii) a compound showh by the formula II is added to the reaction system in such a way that the formation T≥-5.5S 2 +5.5, T≤-6.7S 2 +14.7, T≥3 and S 2 ≥0.09 are satisfied when S 2 is an added amount and polymerization is carried out, to give the aimed polyester having ≥0.6 intrinsic viscosity. n COPYRIGHT: (C)1987,JPO&Japio |
| priorityDate | 1985-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.