http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9988474-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_78ca80ad4b743c901ec136b21263f093 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2410-06 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-06 |
| filingDate | 2015-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1d21df3b371a0b58b2782d20cc0fbb51 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca70e434d87fc11194cb9f21dc256d5b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27862bc8132517ea38f547434644e9ea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_51ad215c2f6d0e3d2820d2850df20cb6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35c156e8b4ec401add83b44982ee6d43 |
| publicationDate | 2018-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-9988474-B2 |
| titleOfInvention | Process for the polymerization of propylene |
| abstract | The invention relates to a process for the preparation of ethylene-propylene copolymers having —a weight average molecular weight of 800,000-1,800,000, —a molecular weight distribution of 3-8, —an ethylene content of 1-10 wt %, preferably 1.5 to 5.5 wt %. —a melt flow in the range of 1.5-8 dg/min measured with a load of 21.6 kg at 230° C. and —a xylene soluble content of 2-15 wt % by converting propylene into the UHMWEP copolymer without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H 2 to propylene is at most 0.0020, wherein the catalyst comprises a catalyst component and a co-catalyst, wherein the catalyst component is obtained by a process wherein a compound with formula Mg(OAIk) x Cl y wherein x is larger than 0 and smaller than 2, y equals 2−x and each Alk, independently, represents an alkyl group, is contacted with a titanium tetraalkoxide and/or an alcohol in the presence of an inert dispersant to give an intermediate reaction product and wherein the intermediate reaction product is contacted with titanium tetrachloride in the presence of an internal donor. |
| priorityDate | 2014-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 281.