BITUMINOUS BINDER COMPOSITION AND PROCESS FOR PREPARING THE SAME
摘要
The present invention is directed to a process for prepapng a polymer modified bituminous binder composition in the substantial absence of crosslinking agents by heating a bitumen component in a stirred tank to a temperature from 160°C to 221°C, adding a block copolymer composition to the bitumen component while the bitumen component is being stirred to form a homogeneous mixture of the bitumen component and the block copolymer composition, and continuing to stir the homogeneous mixture while maintaining the temperature from 180°C to 221°C for a total period of time from 4 hours to 30 hours thereby forming a cured polymer modified bituminous binder composition The block copolymer composition utilized in the process comppses one or more block copolymers having at least one monovinylaromatic block and at least one polybutadiene block having a vinyl content of less than 15 mol percent and at least one polybutadiene block having a vinyl content of greater than 25 mol percent.
申请公布号
WO2008137394(A1)
申请公布日期
2008.11.13
申请号
WO2008US61833
申请日期
2008.04.29
申请人
KRATON POLYMERS US LLC;KLUTTZ, ROBERT, Q;STEPHENS, KEITH, E.