| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c6ca8a1fe5d67ba3408a3d6a3c908001 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0254
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0245 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0209
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0254
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-02 |
| filingDate |
1989-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b90bc244fdc7463639681cd74b5098dd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e5067affa410106dfc43178c0e03876
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fad3c96de61df1b0ad14a29578193eff |
| publicationDate |
1990-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0400225-A1 |
| titleOfInvention |
Process for preparation of polyphenylene sulfide copolymer |
| abstract |
A polyphenylene sulfide copolymer having a high block copolymerization ratio and comprising p-phenylene sulfide units and m-phenylene sulfide units is prepared by a process having the steps of charging collectively a p-dihalo-aromatic compound and a m-dihalo-aromatic compound into an alkali metal sulfide in the presence of an aprotic polar organic solvent; reacting at least 50 mole% of the charged m-dihalo-aromatic compound at a temperature of from 130° to 170°C where only the m-dihalo-aromatic compound is mainly reacted; and then completing the reaction at a temperature of at least 170°C but not higher than 280°C. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2017020726-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014017966-A1 |
| priorityDate |
1987-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |