Hyundai Motor Company

Kia Motors Corporation

Lg Hausys, Ltd.

Lotte Chemical Corporation

Gs Caltex Corporation

Dae Ha Co., Ltd.

Hyundai Ep Co., Ltd.

Lg Hauseys, Ltd.

Ki Hyun Sung

Hyun Kyung Kim

Chun Ho Park

Hee Joon Lee

Seung Wook Park

Seung Jae Lee

Hyeok Seung Lee

Hyung Tak Lee

Eun Seob Shin

Kwan Suk Ryu

Ju-Hyun Ji

Young Gyu You

A polypropylene resin composition includes: a base resin including a propylene homopolymer having a melt index of 20 g/10 min to 35 g/10 min measured at a temperature of 230&#xb0; C. and under a load of 2.16 kg and an ethylene-propylene copolymer having a melt index of 90 g/10 min to 100 g/10 min measured at a temperature of 230&#xb0; C. and under a load of 2.16 kg; a thermoplastic elastomer having a melt index of 10 g/10 min to 40 g/10 min measured at a temperature of 230&#xb0; C. and under a load of 2.16 kg; an inorganic filler; and a sodium phosphate-based nucleating agent.

Polypropylene resin composition and molded product thereof

A polypropylene resin composition includes: a base resin; a thermoplastic elastomer; and an inorganic filler; a major-axis diameter/minor-axis diameter, which is an aspect ratio of the inorganic filler, is 2 to 8. A molded product includes an injection molding of the polypropylene resin composition. The polypropylene resin composition may simultaneously impart excellent rigidity, impact resistance, and excellent dimensional stability even when applied to a molded product having a small thickness, while maintaining a low specific gravity.

A polypropylene resin composition includes a base resin including an isotactic polypropylene resin, a first atactic polypropylene resin, and a second atactic polypropylene resin; a thermoplastic elastomer; and an inorganic filler, in which a weight average molecular weight of the second atactic polypropylene resin is higher than a weight average molecular weight of the first atactic polypropylene resin.

A polypropylene resin composition includes a base resin, a thermoplastic elastomer, and an inorganic filler. The base resin is a polypropylene-based mixed resin including a first resin, a second resin, a third resin, and a fourth resin. The first resin is a homopolypropylene resin. The second resin, the third resin, and the fourth resin are each a polypropylene-based block copolymer resin. A melt index of the second resin measured at a temperature of 230&#xb0; C. and under a load of 2.16 kg is higher than a melt index of each of the third resin and the fourth resin measured under the same condition. A flexural modulus of the third resin measured in accordance with ASTM D790 is lower than a flexural modulus of the fourth resin measured under the same condition.

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Ki Hyun Sung