FIELD: polymerization processes and catalysts.
SUBSTANCE: inventors claim organometallic catalytic system for production of elastomer stereoblock polypropylene via polymerization of propylene, which system contains octahedral hexafluorine-substituted bis-acetylacetonate complex of formula (CF3COCHCOCF3)2MCl2, where M represents Ti or Zr, and, as organoaluminum compound, AlR3, where R represents ethyl, propyl, isopropyl, butyl, isobutyl, or tert-butyl, and; additionally, organomagnesium compound MgR2 or MgRX, where R is alkyl radical with 1-4 carbon atoms and X = Cl, Br, or I, M/Mg/Al molar ratio being 1.0:2.0:(100-500). Claimed is also a method for production of elastomer stereoblock polypropylene via polymerization of propylene in presence of homogenous catalyst system at transition metal complex concentration 10-3-10-5 mole/L.
EFFECT: increased catalytic activity.
2 cl, 1 tbl, 22 ex
| Title |
Year |
Author |
Number |
| HOMOGENEOUS CATALYTIC SYSTEM FOR SYNTHESIS OF POLYETHYLENE AND STEREOBLOCK POLYPROPYLENE, METHOD OF PREPARING STEREOBLOCK POLYPROPYLENE, AND METHOD OF PREPARING POLYETHYLENE |
2000 |
- Bravaja N.M.
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- Saratovskikh S.L.
- Panin A.N.
|
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1999 |
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|
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2011 |
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2020 |
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