FIELD: chemical industry, in particular two-component heterogeneous immobilized catalyst for ethylene polymerization.
SUBSTANCE: claimed catalyst includes alumina, mixture of transition metal complexes with nitrogen skeleton ligands (e.g., iron chloride bis-(imino)pyridil complex and nickel bromide bis-(imino)acetonaphthyl complex). According the first embodiment catalyst is prepared by application of homogeneous mixture of transition metal complexes onto substrate. iron chloride bis-(imino)pyridil complex and nickel bromide bis-(imino)acetonaphthyl complex (or vise versa) are alternately applied onto substrate. According the third embodiment catalyst is obtained by mixing of complexes individually applied onto substrate. Method for polyethylene producing by using catalyst of present invention also is disclosed.
EFFECT: catalyst for producing polyethylene with various molecular weights, including short chain branches, from single ethylene as starting material.
7 cl, 5 tbl, 27 ex
| Title | Year | Author | Number |
|---|---|---|---|
| ETHYLENE POLYMERIZATION CATALYST BASED ON BIS-IMINE COMPLEXES WITH NICKEL BROMIDE | 2002 |
|
RU2202559C1 |
| METHOD OF PREPARING SUPPORTED OLEFIN POLYMERIZATION CATALYSTS | 2006 |
|
RU2302292C1 |
| CATALYST FOR ETHYLENE POLYMERIZATION BASED ON BIS-(IMINO)PYRIDYL COMPLEXES | 2001 |
|
RU2194056C1 |
| CATALYST BASED ON BRIDGED BIS(PHENOXY-IMINE) COMPLEX, METHOD FOR PREPARATION THEREOF, AND A ETHYLENE POLYMERIZATION PROCESS USING THE SAME | 2006 |
|
RU2315659C1 |
| CATALYST BASED ON BRIDGE BIS(PHENOXIMINE) COMPLEX, METHOD OF ITS PREPARATION AND PROCESS OF ETHYLENE POLYMERISATION APPLYING IT | 2008 |
|
RU2364607C1 |
| CATALYST SYSTEM, PRODUCTION METHOD THEREOF AND POLYOLEFINS OBTAINED BASED ON SAID SYSTEM | 2010 |
|
RU2458938C1 |
| CATALYST FOR DIMERISATION OF ETHYLENE IN BUTENES AND METHOD OF ITS PREPARATION | 2018 |
|
RU2701511C1 |
| METHOD OF PRODUCING BUTENES DURING ETHYLENE DIMERIZATION | 2019 |
|
RU2707299C1 |
| COMPLEX ORGANOMETALLIC PROPYLENE POLYMERIZATION CATALYST AND METHOD FOR PRODUCTION OF ELASTOMER STEREOBLOCK POLYPROPYLENE | 2004 |
|
RU2275380C2 |
| CATALYST COMPONENT FOR POLYMERIZATION OF ETHYLENE IN HIGH-LINEAR POLYETHYLENE, A CATALYST AND A METHOD FOR PREPARING IT | 2019 |
|
RU2704263C1 |
