| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_43867d322e887ce7440387bdf2c956b3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F10-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F10-00 |
| filingDate |
1975-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1977-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_61230505e4994e3ac42e1874aaea31dc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2394289c064d00c7d3a8a7b84e674235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4fd775c6f647f050698cf213f7937568
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a64ec4b05bbf60510feb93a39d80a63 |
| publicationDate |
1977-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4022958-A |
| titleOfInvention |
Process for preparing polyolefins |
| abstract |
The present invention relates to a process for preparing polyolefins using an improved polymerization catalyst. According to the invention, there is provided a process for preparing polyolefins by polymerizing or copolymerizing olefins using a catalyst prepared from a component with a titanium compound and/or a vanadium compound supported on a solid carrier and an organoaluminum compound and/or an organozinc compound, said solid carrier comprising a member selected from the group consisting of a reaction product A obtained by reacting (1) an organic carboxylate salt of magnesium and (2) an aluminum compound represented by the general formula Al(OR) 3 wherein R may be same as or different from each other and each R is an organic radical containing from 1 to 20 carbon atoms under such a condition that the aluminum compound is present in excess of a (2):(1) molar ratio of at least 1.6:1 and a reaction product B obtained by treating said reaction product A with a halogenating agent. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4384088-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004039139-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0605002-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5543478-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5571879-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4277372-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4313850-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4331790-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0032294-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0032294-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4380507-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6887817-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5648581-A |
| priorityDate |
1973-03-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |