http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2794685-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c50ae720f4774721f43e52df4bfbf108 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2201-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2325-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F12-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-001 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-228 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F112-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F12-08 |
| filingDate | 2012-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_184c8fb142e73be620c9f408c1629d2e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d040d3533f2e6f76245bbe693a7a0b9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33ce709f4992d0703850f60b1f78360b |
| publicationDate | 2014-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2794685-A1 |
| titleOfInvention | Process for preparing polystyrene having a high melt flow rate |
| abstract | Provided is a process for preparing polystyrene having a weight average molecular weight (Mw) in the range of 120,000- 160,000 g/mol, a polydispersity in the range of 4-6 and a melt flow rate of at least 40 g/10 minutes by feeding styrene into a reaction system through which the styrene passes as a component of a reaction mixture as it is polymerized, the reaction system including an initial reaction zone (100) and a downstream reaction zone (200), comprising the steps of : polymerizing styrene in the initial reaction zone to form polystyrene having a Mw of greater than 300,000 g/mol and a polydispersity in the range 1,5-2.5, 10-30 wt.% of the styrene fed to the initial reaction zone being polymerized there,- and polymerizing styrene remaining in the reaction mixture in the downstream reaction zone, a chain transfer agent being mixed with the reaction mixture at the commencement of this reaction zone and optionally at one or more additional locations within this reaction zone. The polystyrene may be used to manufacture expandable polystyrene beads or polystyrene foam board. |
| priorityDate | 2011-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 87.