http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7799866-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F297-083 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F297-00 |
| filingDate | 2008-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2010-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4847314e6e1a55867e0f7a2cac806ca7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c8fd5c12d81cafc711ca0be02fadb562 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8486a7f725acf75c8b14972bdaf86b20 |
| publicationDate | 2010-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-7799866-B2 |
| titleOfInvention | Method for producing propylene-ethylene block copolymer |
| abstract | The method for producing a propylene-ethylene block copolymer in accordance with the present invention has: a first polymerization process which is performed using two or more polymerization tanks connected in series and in which a solid catalyst or a prepolymerized catalyst containing a solid catalyst, and propylene are continuously supplied to a first polymerization tank; and a second polymerization process in which propylene, ethylene, and polypropylene particles continuously extracted from the last polymerization tank of the first polymerization process are supplied to a polymerization tank to produce a propylene-ethylene block copolymer, wherein the average retention time of the polypropylene particles in each polymerization tank of the first polymerization process is 0.1 to 1.5 h and the sum total of average retention times of polypropylene particles in the polymerization tanks of the first polymerization process is 1.5 to 3.0 h. |
| priorityDate | 2007-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 386.