Solid catalyst for polypropylene production and method for production of block copolymer
AssigneeHanwha Totalenergies Petrochemical Co., Ltd.
InventorsYong Jun JEON, Dong Geun Lee, Young Joo Lee, Jung Soo Park
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Abstract
Disclosed are a solid catalyst for producing polypropylene and a method for producing a block copolymer, particularly, disclosed are a solid catalyst for producing polypropylene, which has high activity and excellent hydrogenation activity and is capable of producing a block copolymer having high stereoregularity and a high rubber content by copolymerization of alpha-olefins, and a method for producing a block copolymer.
Claims12
A method of producing a propylene polymer or a propylene-based copolymer using a catalyst system, wherein the catalyst system comprises:
- (A) as a main catalyst component, a Ziegler-based catalyst comprising magnesium, titanium, halogen and an internal electron donor;
- (B) as a co-catalyst, an alkylaluminum compound;
- and
- (C) as external electron donors, (a) at least one tetraalkoxysilane-based compound, and (b) at least one dialkoxysilane-based compound or at least one trialkoxysilane-based compound.
A catalyst system for producing a propylene polymer or a propylene-based copolymer, comprising:
- (A) as a main catalyst component, a Ziegler-based catalyst comprising magnesium, titanium, halogen and an internal electron donor;
- (B) as a co-catalyst, an alkylaluminum compound;
- and
- (C) as external electron donors, (a) at least one tetraalkoxysilane-based compound, and (b) at least one dialkoxysilane-based compound or at least one trialkoxysilane-based compound.
Dependencies are inferred from the claim text.