| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_076a5d6f6c99d94b464eafecddc85d59 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S526-905
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10L1-1963
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10L1-165
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10L1-1616
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10L1-1608 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10L1-1658
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10L1-1641
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10L1-143
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10L1-1666 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10L1-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10L1-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C10L1-14 |
| filingDate |
1996-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c4d24fcda9517f2d1b12c2ecf52a679
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ff9dfcfb7bd27a5d00ea0ebb7856b6c |
| publicationDate |
1997-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0771824-A3 |
| titleOfInvention |
Process for the preparation of low molecular weight ethylene-based polymers |
| abstract |
Polymerization process to obtain elastomeric copolymers or terpolymers based on ethylene for cold flow improver (CFI) having a viscosimetric average molecular weight ranging between 600 and 16.000, comprising a) polymerization of monomers in suspension in the presence of an alpha-olephin liquid in the reaction conditions, in the presence of an amount of solvent from about 5 to 30% by volume of the reactor volume in the presence of a polymerization catalyst able to give the X2 and/or X4 parameters, lower or equal to 0.02, X2 and X4 representing the fraction of uninterrupted methylenic sequences of 2 and 4 methylenic groups between two successive methyl or methylene groups respectively in the polymeric chain, as compared with the uninterrupted total sequences of methylene groups determined by <13>C-NMR; b) forwarding of the reaction slurry into a flash pipe for the evaporation of the unreacted monomers and of minimum quantities of solvent; c) separation of the polymeric part with the quantity of solvent introduced into the reaction as solvent foot, in solvent of the same type or different, so as to obtain the desired polymer concentrations, and disactivation of the catalyst by bubbling of wet air stream. |
| priorityDate |
1995-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |