| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8b53986469776eea76d9ad2a57da778e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_204575abb21b2ce7dfcca7e94d1154f9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bc468beac054fcdeeee4a4e53a9790b9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0a906fcc273ed8131a3b80b3b8e9bb31
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_97a3314b853015e6d690d6d8de24fe44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f41a41736d1ed7b7864f041748bfdf0e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fbc95fa500ee2e01e4af75f8d3cebc80 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F110-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2410-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-139 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-685 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B1-08 |
| filingDate |
2010-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2013-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3a8ac830ed27b4272e8a67a76d073f2c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90640dfd3cbcc312b9a4e12598c96c38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebe6398799823d953201848e2402319e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_378c63ad88e8b71b1be06bb83e739895
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58865b6dd8a2551927cd18faea775160
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89391d2714cddc298ac6d35b7f1e5b0b |
| publicationDate |
2013-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-8409681-B2 |
| titleOfInvention |
Multi-stage process for producing multi-modal linear low density polyethylene |
| abstract |
A process is disclosed for producing a multi-modal linear low density polyethylene in at least two staged reactors connected in series, comprising (i) polymerizing in a first slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A); and (ii) polymerizing in a second gas or slurry phase stage ethylene monomers with a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B). The Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of formula (I) b) an aluminum compound of formula (II); and c) a vanadium compound and a titanium compound having a molar ratio (V:Ti) from 10:90 to 90:10; and 2) one or more organometallic cocatalvsts of formula (III). The linear low density polyethylene shows an improved comonomer composition distribution Formulas (I), (II), and (III) are described herein. |
| priorityDate |
2009-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |