http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2014025022-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/C08G63-86 |
| filingDate | 2012-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22c98982175b2a74c8fca737edff43dc |
| publicationDate | 2014-02-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2014025022-A |
| titleOfInvention | Method for producing copolymerized aromatic polyester |
| abstract | An object of the present invention is to provide an efficient method for producing a copolyester having a heat resistance and food resistance required for a molded product, with almost no decrease in molecular weight during melt molding. In a method for producing a copolymerized aromatic polyester in which an ethylene oxide adduct of bisphenol S is copolymerized in an amount of 55 mol% or more in all diol components and a glass transition temperature is 135 ° C. or more, the copolymerization is carried out. In the ethylene oxide adduct of bisphenol S, the copolymerization rate of bis [4- (2-hydroxyethoxy) phenyl] sulfone is 95.0 mol% or more, and [4- (2-hydroxyethoxy) -4 ′ The copolymerization rate of-(2-hydroxyethoxyethoxy) diphenyl] sulfone is 2.5 mol% or less, and includes at least the following steps. The problem can be solved. Step 1: A step of transesterifying an aromatic dicarboxylic acid or derivative thereof with an aliphatic diol and the aromatic diol represented by the above formula (I) using a transesterification catalyst under a pressure of 0.05 MPa or more. 2: A step of polycondensing the reaction product produced in step 1 using a phosphorus compound and a germanium compound [selection figure] None |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20210156357-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102581119-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022210049-A1 |
| priorityDate | 2012-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 126.