Lg Chem, Ltd

Dong Gil Lee

Seung Ho Choi

Soo Yong Lee

Won Mun Choi

Tae Hee Lee

Kyung Woo Kim

The present invention relates to a modified conjugated diene-based polymer having controlled degree of branching, excellent affinity with a filler, and excellent processability properties and compounding properties, a method for preparing the same, and a rubber composition including the same. The modified conjugated diene-based polymer is prepared using a modifier represented by Formula 1 to include a functional group derived from the modifier in at least one terminal of the polymer chain: 1—wherein Rto Rand n are described herein.

Modified conjugated diene-based polymer, method for preparing the same and rubber composition comprising the same

A modifier useful for modifying a polymer providing a functional group having affinity with a filler, particularly, a silica-based filler is provided. A modified conjugated diene-based polymer including a functional group derived from the modifier having excellent affinity with a filler and improved compounding properties, and a method for preparing the same are also provided.

Modifier, modified conjugated diene-based polymer and method for preparing the same

A modified conjugated diene-based polymer represented by Formula 1, wherein a terminal of a polymer chain is modified, and a method for preparing same are provided. By including a modifier derived unit having a specific structure, a beta value affecting cold flow may be reduced through controlling the degree of branch, and accordingly, the cold flow of a polymer may be efficiently controlled and a mooney viscosity increasing ratio may be improved.

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Daejeon, South Korea

Dong Gil Lee