Patent ID: 9644046
Date: 2017-05-09
CPC Classifications: C08C,C08F,C08K

Claim:
1. A modified conjugated diene-based polymer which comprises two silyl groups having an alkoxy group bonded thereto and which comprises a functional group including a secondary amino group within a molecule, wherein a degree of modification is not less than 50% by mass, the degree of modification being determined by an amount to be adsorbed to a column filled with silica particles by gel permeation chromatography (GPC) measurement using the column, the ratio (Mw/Mn) of the polystyrene equivalent weight average molecular weight (Mw) to the polystyrene equivalent number average molecular weight (Mn) by gel permeation chromatography (GPC) measurement in the modified conjugated diene-based polymer is not less than 1.80 and not more than 3.50, and the Mooney stress-relaxation rate (MSR) of the modified conjugated diene-based polymer measured at 110° C. is not more than 0.35.