FUNCTIONALIZED VINYL AROMATIC HYDROCARBON-CONJUGATED DIENE BLOCK COPOLYMER, A MANUFACTURING METHOD THEREOF, AND AN ASPHALT COMPOSITION COMPRISING THE SAME CAPABLE OF REMARKABLY IMPROVING LOW TEMPERATURE ELONGATION AND STORAGE STABILITY OF AN ASPHALT COMPOSITION

摘要

PURPOSE: A functionalized vinyl aromatic hydrocarbon-conjugated diene block copolymer is provided to functionalize without degradation of a molecular weight, to have excellent compatibility with asphalt, and to remarkably reduce dissolving time of an asphalt composition.;CONSTITUTION: A functionalized vinyl aromatic hydrocarbon-conjugated diene block copolymer comprises aldehyde groups inside a butadiene block. The content of the aldehyde group is 50-1600 ppm based on the weight ratio of the vinyl aromatic hydrocarbon-conjugated diene block copolymer. A manufacturing method of the functionalized vinyl aromatic hydrocarbon-conjugated diene block copolymer comprises a step of forming the aldehyde groups by selectively oxidizing a vinyl structure in a vinyl aromatic hydrocarbon-conjugated diene block copolymer.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Before block copolymer dissolution(x 400); (BB) After block copolymer dissolution(x 400)