http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109535406-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-6852 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-3809 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K19-3823 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K19-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-685 |
| filingDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109535406-B |
| titleOfInvention | Preparation method of polyarylate based on 2- (3-hydroxyphenyl) -6-carboxypyridoimidazole |
| abstract | The invention discloses a preparation method of polyarylate based on 2- (3-hydroxyphenyl) -6-carboxypyridoimidazole, relates to a preparation method of polyarylate based on 2- (3-hydroxyphenyl) -6-carboxypyridoimidazole, and aims to solve the problems of high preparation difficulty and non-ideal mechanical property of liquid crystal polyarylate. The preparation method comprises the following steps: firstly, adding p-hydroxybenzoic acid, 2- (3-hydroxyphenyl) -6-carboxypyridoimidazole, acetic anhydride, 4-aminopyridine and an antioxidant into a polymerization kettle to prepare a prepolymer of thermotropic liquid crystal polyarylate through melt polycondensation; secondly, the prepolymer is placed in a rotary kiln to carry out solid-phase polycondensation reaction under the condition of nitrogen protection, so as to obtain high molecular weight polymer powder; thirdly, cooling and drafting the high molecular weight polymer powder after mixing to prepare nascent polyarylate; fourthly, carrying out heat treatment on the nascent polyarylate. The preparation method of the thermotropic liquid crystal polyarylate fiber is simple to operate, and the final drawn strength of the obtained polyarylate fiber can reach 160-200 MPa. |
| priorityDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.