Solid catalyst for propylene polymerization and a method for preparation of polypropylene
AssigneeSamsung Total Petrochemicals Co., Ltd.
InventorsSang Yull KIM, Eun Il KIM, Joon Ryeo PARK
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Abstract
Provided are a solid catalyst which includes an internal electron donor mixture including at least one selected from bicycloalkane dicarboxylates and bicycloalkene dicarboxylates, and benzene 1,2-dicarboxylic acid ester, and can produce a polypropylene having excellent stereoregularity and melt flowability with a high catalytic activity, and a method for preparing polypropylene using the catalyst.
Claims4
A solid catalyst for propylene polymerization comprising titanium, magnesium, halogen and an internal electron donor mixture, wherein the internal electron donor mixture comprises at least one selected from the bicycloalkane dicarboxylates and bicycloalkene dicarboxylates represented by the following formula (II), formula (III), formula (IV) and formula (V), and benzene-1,2-dicarboxylic acid ester:
- wherein, R1 and R2, which may be same or different, are a linear, branched or cyclic C1-20 alkyl, alkenyl, aryl, arylalkyl or alkylaryl group, respectively;
- R3, R4, R5 and R6, which may be same or different, are hydrogen, a linear, branched or cyclic C1-20 alkyl, alkenyl, aryl, arylalkyl or alkylaryl group, respectively.
Dependencies are inferred from the claim text.