WATERPROOF SHEET ADDITIVE CONTAINING ASPHALT, PROCESS FOR PRODUCING ASPHALT-CONTAINING WATERPROOF SHEET, ASPHALT COMPOSITION, AND ASPHALT-CONTAINING WATERPROOF SHEET

摘要

Impermeable sheet additive containing asphalt, capable of producing an asphalt composition which reaches a low mixing temperature at the time of production, has a high softening point and excellent low viscosity, exhibits tackiness high in a range from a low temperature to a high temperature, which causes less oil bleeding and has excellent low temperature bending ability. The present invention relates to an impervious sheet additive containing asphalt, comprising an additive (A) comprising a vinylaromatic monomer unit and a conjugated diene monomer unit, the degree of hydrogenation of the double bonds contained in the diene monomer unit. conjugate being 10 mol% or more and 85 mol% or less.