| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7565e18a09eb30c4c8460acfe01e9511 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-901 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-34 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-654
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-642
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F4-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 |
| filingDate |
1993-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1999-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f0773455530f187b1fed25600802ded4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e0204a8bab4042b8cde7524d3996880
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dc65d11493cef2c709b437996ac87c5c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_813b034d10d906bc7a05c42c83ba0396 |
| publicationDate |
1999-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0560312-B1 |
| titleOfInvention |
Process for the gas-phase polymerisation of olefins |
| abstract |
Process for the gas-phase polymerization of ethylene and ethylene mixtures with alpha -olefins CH2=CHR in the presence of a high activity catalyst comprising a titanium compound containing at least one Ti-halogen bond supported on magnesium dichloride in active form, said process comprising the steps of: (a) contacting the catalyst component; (b) prepolymerizing ethylene or ethylene mixtures with alpha -olefins in order to produce a polymer amount of from approximately 5 g per g of solid component, up to an amount corresponding to about 10% of the final catalyst yield; (c) polymerizing ethylene or ethylene mixtures with alpha -olefins in the gas-phase, in the presence of the prepolymer-catalyst system obtained in (b) , while maintaining in the gas phase a molar concentration of the alkane comprised between 20 and 90 % with respect to the total gases. <IMAGE> |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6495609-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6593506-B1 |
| priorityDate |
1992-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |