| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0a906fcc273ed8131a3b80b3b8e9bb31 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2500-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2323-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-16 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6492
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-6465
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F210-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F210-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 |
| filingDate |
2015-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2020-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c6b4bfe6981bdd3a4b0ec878cfc6589c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_16586f222bfda65409f59eb17429dd0b |
| publicationDate |
2020-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-10696764-B2 |
| titleOfInvention |
Process for preparing propylene copolymers |
| abstract |
The present invention relates to an olefin polymerization process, wherein propylene and 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst system so as to obtain a polypropylene, wherein the polypropylene comprises 1-butene-derived comonomer units in an amount of from 0.5 to 15 wt % and optionally ethylene-derived comonomer units in an amount of up to 3 wt %, and the Ziegler-Natta catalyst system comprises an external donor of the formula (I)n n(R 3 ) z (R 2 O) Y Si(R 1 ) X (I). |
| priorityDate |
2014-12-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |