| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5128cfc84a0fb189fceb3cd240c44493 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-4012
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-4093 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-38 |
| filingDate |
1986-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1988-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5798cf378ff1302345fa7b4545ca460a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_44fe31c2e04bd4170679699c817b9b92 |
| publicationDate |
1988-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4757126-A |
| titleOfInvention |
Process for preparing crystalline aromatic polyetherketone |
| abstract |
A process for preparing a crystalline aromatic polyetherketone having a reduced viscosity of 0.6 or more is disclosed. The process includes polycondensing an aromatic dihydroxy compound with a dihalogeno aromatic ketone in a solvent having the following general formula (I) or (II): <IMAGE> (I) <IMAGE> (II) wherein each of R1, R2 and R3 is independently a hydrogen atom, a C1-3 alkyl group or a phenyl group; X is an oxygen atom, a sulfur atom or a direct bond; Y is an oxygen atom or a ketone group; and n is 0 or 1; in the presence of an alkali compound. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007178259-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9792781-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101213241-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8394910-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007026171-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5171821-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010216944-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004126522-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004126521-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007003872-A1 |
| priorityDate |
1985-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |