http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100287253-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0254 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-0209 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-025 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-0254 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-02 |
| filingDate | 1993-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2001-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-100287253-B1 |
| titleOfInvention | How to control the particle size of polyaylene sulfide |
| abstract | The present invention relates to a method for controlling the particle size of the polyarylene sulfide obtained during polymerization and to a polyarylene sulfide produced thereby, the method for controlling the particle size of the polyarylene sulfide, an embodiment At the end of the precipitation of the polyarylene sulfide formed at, the gas phase portion of the reactor is cooled or heated after starting to lower the temperature of the reaction system and the water content in the reaction system is 0.8 to 1.7 mol per mol of the alkali metal sulfide, The gas phase portion is cooled in the polymerization stage to condense some of the gas phase in the reactor, and the condensed liquid is refluxed into the liquid phase of the poor condenser, and after the temperature of the reaction system is started to cool, the gas phase portion is simply cooled, which is suitable for powder coating. A molecular weight polyarylene sulfide is formed such that the weight average molecular weight is at least 30,000 and the average particle size is 50 to 80 µm, and within 40 150㎛ particles is characterized in that not more than 0.5% by weight of the amount of particles greater than that in at least 90% by weight of the total particles within the particle size distribution and 180㎛. |
| priorityDate | 1992-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.