| 摘要 |
PROBLEM TO BE SOLVED: To develop a method of manufacturing a propylene-based block copolymer as a reactor TPO having very low crystallinity, excellent in transparency with which a polymer particle having high flowability and easy to use is formed, having no stickiness and a good balance of flexibility and heat resistance.SOLUTION: A method of manufacturing a propylene-based block copolymer by multistep polymerization includes manufacturing a crystalline polypropylene component (A) by a first process of polymerizing a propylene-based monomer in the presence of a metallocene catalyst (M) and an organic aluminium compound (C), and then manufacturing a propylene-based elastomer component (B) by a second process of adding an organic silicon compound having a certain structure (D) and polymerization in the presence of it. |
