| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e5798fb1c6243b9752c714eb5921142
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_17459d33f4201377c8e73da7b38bc13b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_54594ea698b06b67e25402b79cfd790a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_41baebda2ae6e4be0728cea1dbadfd7c |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-44 |
| filingDate |
2007-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_17aa5f0eb3df83b1fbaa963909a1c7eb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5aff01aa17ce5433bd91af086b297f2a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a13dd51a386aa6ede835ced3e8fc521
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ef189453da22ac07c314b940d929d08a |
| publicationDate |
2008-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2008269441-A1 |
| titleOfInvention |
Polymerization process providing polyethylene of enhanced optical properties |
| abstract |
A process for the polymerization of ethylene to provide an ethylene polymer of reduced Yellowness Index. A feed stream, comprising an inert hydrocarbon diluent containing ethylene in a minor amount, is supplied to a polymerization reactor. A chromium-based polymerization catalyst and a triethylboron co-catalyst are incorporated into the feed stream within the reactor. The polymerization catalyst will normally be used in an amount within the range of 0.008-0.1 wt. % of the diluent in the feed stream and the triethylboron co-catalyst is incorporated in an amount within the range of 0.1-50 ppm of the diluent. The polymer fluff from the reactor is heated to a temperature sufficient to melt the fluff which is then extruded to produce a polymer product. The Yellowness Index after high temperature aging is at least 5% less than the corresponding Yellowness Index of a corresponding polymer product produced without the triethylboron co-catalyst. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009198026-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8258246-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101792035-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8268943-B2 |
| priorityDate |
2007-04-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |