Modified conjugated diene-based polymer, method for preparing the same and rubber composition including the same
AssigneeLG Chem, Ltd.
InventorsJung Hwan Oh, Suk Joon Yoo, He Seung Lee, Jae Sun Choi
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Abstract
A modified conjugated diene-based polymer and a rubber composition including the same are disclosed herein. The modified conjugated diene-based polymer has excellent processability and good tensile strength and viscoelasticity. In some embodiments, a modified conjugated diene-based polymer includes silicon (Si) and nitrogen (N), and has an N content of 150 ppm or more based on the weight of the modified conjugated diene-based polymer and a rate of change of mooney viscosity (MVR) of 20% or less.
Claims17
A modified conjugated diene-based polymer comprising silicon (Si) and nitrogen (N), and satisfying the following conditions a) and b):
- a) a N content of 150 ppm or more, based on the weight of the modified conjugated diene-based polymer;
- and
- b) a rate of change of mooney viscosity (MVR) of 20% or less, wherein MVR is calculated according to the following Mathematical Formula 1:
- MVR=[(MVf−MVi)/MVi]×100 [Mathematical Formula 1]
- in Mathematical Formula 1, MVf is mooney viscosity at 100° C. after standing the polymer at 25° C. for 30 days, and MVi is initial mooney viscosity of the polymer at 100° C.
Dependencies are inferred from the claim text.