FIELD: chemistry.
SUBSTANCE: invention relates to a catalyst composition for polymerisation of olefins. Composition comprises (a) a catalyst compound, wherein catalyst compound is a metallocene catalyst containing a titanium, zirconium or hafnium atom, and (b) a metal carboxylate, wherein said metal carboxylate by differential scanning calorimetry is substantially free of carboxylic acid since metal carboxylate do not have any melting peaks at temperatures that are less than or equal to 75 °C. Metal carboxylate is described by formula: MQx (OOCR) y, wherein M is a metal of group 13 of Periodic Table of Elements; Q is halogen, hydroxy, alkyl, alkoxy, aryloxy, siloxy, silane or sulphonate group; R represents a hydrocarbyl radical containing from 12 to 30 carbon atoms; x is an integer from 0 to 3; y represents an integer of from 1 to 4; and sum of x and y equals valence of metal M. Also disclosed is a method for preparing a catalyst composition and method of polymerisation.
EFFECT: invention provides a catalyst composition for polymerisation of olefins, which has improved flowability characteristics.
16 cl, 4 dwg, 6 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHODS FOR POLYMERISATION OF OLEFINS USING EXTRACTED METAL CARBOXYLATES | 2011 |
|
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| SPRAY DRYING-OBTAINED CATALYST COMPOSITIONS AND POLYMERISATION METHODS USING SAME | 2012 |
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| CATALYST COMPOSITION, METHODS OF PRODUCING AND USING IN POLYMERISATION METHOD | 2015 |
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| ADDITIVE FOR METHODS OF POLYOLEFIN POLYMERISATION | 2011 |
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RU2577324C2 |
| PROCESSES FOR MAKING CATALYST COMPOSITIONS HAVING IMPROVED FLOWABILITY | 2014 |
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| METHODS AND SYSTEMS FOR POLYMERIZATION OF OLEFINES | 2013 |
|
RU2632195C2 |
| CONTINUITY COMPOSITIONS AND METHODS OF MAKING AND USING SAME | 2015 |
|
RU2677897C2 |
| INCREASING CONTINUITY ADDITIVE FOR OLEFINES POLYMERISATION PROCESSES | 2012 |
|
RU2632878C2 |
| METHODS OF OBTAINING CATALYST SYSTEMS WITH INCREASED PRODUCTIVITY | 2013 |
|
RU2647855C2 |
