| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c2e66bf3565193fc7c191c8d35230946 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F218-08 |
| filingDate |
1986-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8cb8902d4ad41fa9e3a272bd39b2adef
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4820939a063bd0e956a594b4bfa91afe
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ebd44e11a5ad3bc94440c9c4c07f8bc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_10adfde57800ed326bf1e1358cdba477
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_abb1c24539a63a8adaef34d93dcf3589
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5da067bbaa4df26f24b91da5497e61a0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12c9138e3be0bf0fa5e5944e8754523e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71d1f69fd722832e9def5a3192f1d6da |
| publicationDate |
1991-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DD-287376-A7 |
| titleOfInvention |
METHOD FOR AVOIDING HYDROGENATION IN HIGH PRESSURE POLYMERIZATION |
| abstract |
Process for avoiding hydrogenation in high-pressure polymerization. In the polymerization of ethylene and / or ethylene vinyl acetate monomer mixtures in the presence of hydrogen as a molecular weight regulator, the hydrogenation is pushed back by directly before the start of the polymerization or copolymerization for 24 to 72 hours, a "prepolymerization" of a polymer of 80 to 90 * ethylene and 20 to 10 * vinyl acetate and a melt index at 463 K of 1 to 10 g / 10 min. This results in a sealing of the active centers along the reactor inner wall. The "seal" is repeated with a rise in the rate constant of the hydrogenation to ko0,20 * after technical shutdowns or prophylactically after a certain polymerization time. |
| priorityDate |
1986-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |