Organic zinc compound comprising polyolefin-polystyrene block copolymer, and method for preparing the same

A method for preparing an organic zinc compound represented by Formula 1 below, the method comprising:

• a first step of preparing a compound represented by Formula 3 through coordination polymerization of an olefin monomer using a transition metal catalyst in the presence of organic zinc represented by Formula 2;
• and
• a second step of sequentially adding an alkyl lithium compound represented by Formula 4, an amine ligand represented by Formula 5 and a styrene-based monomer to the compound represented by Formula 3 to perform anionic polymerization:
• where R1 and R2 are each independently hydrogen or an alkyl group having 1 to 20 carbon atoms;
• Ar is an aryl group having 6 to 20 carbon atoms;
• A is a hydrocarbon group having 1 to 20 carbon atoms;
• an average value of a1 and a2 is approximately 0 to 10,000;
• and
• an average value of b1 and b2 is approximately 10 to 1,000;
• and
• (A)2Zn [Formula 2]
• where A is a hydrocarbon group having 1 to 20 carbon atoms;
• and
• where R1 and R2 are each independently hydrogen or an alkyl group having 1 to 20 carbon atoms;
• A is a hydrocarbon group having 1 to 20 carbon atoms;
• and an average value of a1 and a2 ranges from approximately 0 to 10,000;
• B—Li [Formula 4]
• where B is an alkyl group having 1 to 20 carbon atoms;
• where R51 and R52 are each independently a hydrocarbon group having 1 to 20 carbon atoms, and z is an integer of approximately 2 or 3.